polishlinux.org http://polishlinux.org All About GNU/Linux and BSD - reviews, comparisons, articles Thu, 21 Jan 2010 11:52:56 +0000 http://wordpress.org/?v=2.6.3 en Polish Internet Users Against the Censorship of the Net http://polishlinux.org/poland/polish-internet-users-against-the-censorship-of-the-net/ http://polishlinux.org/poland/polish-internet-users-against-the-censorship-of-the-net/#comments Thu, 21 Jan 2010 10:46:11 +0000 michuk http://polishlinux.org/?p=1241 Polish government wants to enforce Internet filtering to eliminate online gambling and child pornography. Everything for the benefit of our children, as this is the argument which is hard to stay against.

However, a notable group of Polish lawyers, journalists, academics, enterpreneurs, politicians and bloggers think otherwise and signed a letter (written by myself, btw) to President of Poland, Lech Kaczyński, asking him to turn the law down (in Polish legal system, president has the right to do this, but the parliament can then overcome president’s opposition if 2/3 of the delegates vote for it).

Here is the translation of the letter:

Dear Mr President!

We are addressing You to raise issue crucial for every Polish citizen using Internet. By pushing ahead so called ‘Anti-Gambling Law’ government of Donald Tusk is proposing, in the name of fight against gambling, to claim the right for filtering of all content available on-line. The Art.179a of Telecommunication Law, introducing ‘Registry of Banned Websites and Services’ is supposed to allow that.

It is a very dangerous idea which contradicts the interest of citizens. The statement that Internet should be governed by the same law as that referring to any other part of public space might be valid, however realisation of the above postulate has nothing to do with the constitutional right to freedom of expression. The planned changes in law are simply new way of censorship, very well known to You from previous system. Similar regulations allowing governments unrestricted filtering of content available for citizens are currently in place only in few countries of the world. Amongst those You will find for instance Iran and China. Do we really want Poland to join them?

Internet is a public space enabling expression and exchange of opinions. Thus the top to down filtering of Internet can be only compared to closing citizens mouths before they even start to speak up. It is something that even George Orwell did not imagine in his famous novel “1984″ about vision of totalitarian state.

What can be done towards following the law on the Internet then? Exactly the same as in case of breach of law related to rights of fellow citizens! Those who brake the law need to be simply prosecuted. If a website contains materials banned by law (including treacherous child pornography or content promoting Nazism or hate), we have appropriate mechanisms in place to punish those who are responsible for them. It is more difficult then the top to down filtering, as it requires separate analysis of each case. However does it mean, that for this very reason we should sacrifice our freedom of speech?

In May on the website stopcenzurze.wikidot.com we have collected 75.000 confirmed signatures against possibility of Internet censorship in European Union. No one really expected at that point of time that similar problem might occur in our own homeland.

We hope that having in consideration freedom as major value in a democratic state, You will decide to veto this disadvantageous for citizens proposal.

With regards,

Borys Musielak, creator of Grupa Jakilinux, author of this letter

And the undersigned [list of Polish lawyers, journalists, academics, enterpreneurs, politicians and bloggers here]

(big thanks to Sylwia Presley for the translation!)

Everyone is welcome to sign the petition opposing net neutrality violating law. We already have 75 thousands of signatures and counting!

You can also join the “Stop Cenzurze” group on Facebook to show your stance.

It’s a very important moment for Polish Internet users and for the whole European Union as Poland would be the first country after the passing of the Telekom Package that actually uses the opportunity to censor the Internet. The only other nation in Europe (not EU though) that has similar law is totalitarian Belarus.

Borys Musielak
E-mail: borys@musielak.eu
Phone: +447972761605 (UK mobile)

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Promise of a post-illegal copy world. Part I: History of Intellectual Property http://polishlinux.org/gnu/promise-of-a-post-illegal-copy-world-part-i-history-of-intellectual-property/ http://polishlinux.org/gnu/promise-of-a-post-illegal-copy-world-part-i-history-of-intellectual-property/#comments Thu, 21 Jan 2010 02:02:56 +0000 TheBlackMan http://polishlinux.org/?p=1181

Lots of Internet forum discussions with various people on the subject of computer piracyillegal copying and intellectual property were my inspiration for this article. Along with the discussions, a lot of inaccuracies and lacks in the image of reality presented to humanity by RIAA, MPAA, MAFIAA and other corporate lobbyists appeared. Because I hate lies and injustice, I decided not to tolerate the false propaganda and to write this article which is a finial of few years of thinking, mentioned discussions and arguments used by both sides of the barricade.

Translated from Polish by Kamil Zawadzki

1. Definitions.

Intellectual property and its theft is often spoken of in media lately, but how many of us actually think about intellectual property and its definition? According to English Wikipedia definition, “Intellectual property (IP) is a term referring to a number of distinct types of legal monopolies over creations of the mind, both artistic and commercial, and the corresponding fields of law.(…)”. Thanks to intellectual property law, “owners are granted certain exclusive rights to a variety of intangible assets, such as musical, literary, and artistic works; discoveries and inventions; and words, phrases, symbols, and designs.”. As we can see, it is a very wide definition.

Everything, that is created by a human mind and is unique in its own way, can be under protection. This way to understand it is not an exaggeration and stands not far from reality given by examples: magenta color registration by German T-Mobile brand, or so-called patent troll, that sued Internet for using technology, that supposedly was his invention.

Case no 1

So if everything can be protected under intellectual property law, even something simple and a trivial, it is logical that every small bit of that “property” is an intellectual property as well. Let’s consider an example, in which somebody actually patents the word “arse”. Since that very moment “arse” becomes an intellectual property of that person. Moreover, let’s assume that all combinations such as “ar”, “rs”, “se” etc, that the word “arse” consists of were already “invented” by somebody else, and they are his intellectual property. Actually, if we would really want to be consequent, the letters “a”, “r”, “s”, “e” are also somebody’s intellectual property. OK, but whose property are those letters? To whom do they belong to? Logical explanation should be be: They belong to those, who actually invented them. So… WHO did invent them?
Society.

Therefore…if society is both the author and owner of “a”, “r”, “s”, “e” letters and all combinations that the “arse” word consists of, how come an author of the “arse” word dares to claim to wholly own the word and demands protection the word from its illegal copying from the government? How can we estimate in what percent is he owner of the word?

The same analogy can be used to all sorts of intellectual property

  • Music: If Britney Spears owns her song, created it from the scratch, did she also created words, notes, the way to write notes, instruments, rhythm, dancing and singing? All these are intellectual properties owned by society.
  • Software: If programmers are the only ones who own their programs, do they own mathematical and physical laws, algorithms and all other elements that made software creation and compilation possible?
  • Films: If filmmakers are the only ones who own their films, do they own the idea of acting, movie with sound, music, audio and video recording on hard drives ? On no account. All of these are intellectual property that have been improved by human race for thousand of years.
  • Books: If writers and poets are the only ones who own their books, do they own digits, numbers, letters, words, literate styles or inspirations, that allowed the creation of these works ? Hell no, though all those elements are intellectual property, that nobody has taken into possession using monopoly.
  • Inventions: If an inventor/concept creator is the only one who owns an invention/concept, does he also own mathematical, physical, chemical and biological laws that his invention consists of ? Does the baker who patents a new kind of bread also own patents for flour, sponge, oven and concept stating that you can actually create food by boiling ground grain with water and some other ingredients although all the “patents” for those particular things belong to society and are public property?

It often happens, that people compare intellectual property theft to common theft (which is absurd, but we will get to that later). Let’s use the same, senseless weapon and use this comparison to the following example. The question is: Who is the rightful owner of a Mercedes — Mr John, who has all ownership acts for all the parts, that the Mercedes consist of, or rather Mr Bob, Mr. John’s mechanic, who unscrewed and screwed back wheels on John’s car but switched their places?

Conclusion no 1

From the logical point of view, something like “intellectual property” in practice should not exist, because it’s impossible to own something, that consist of other, smaller pieces owned by somebody else. All fragments of someone’s imagination consist of other, smaller fragments of somebody else’s imagination. The difference between fragments and the whole thing is that the most of the fragments are not protected by patents and copyrights, but are indeed public property. (public domain).

In that kind of understanding the matter of intellectual property, we can only own a small amount (<5%) of created intellectual property, because all that we create, invent, imagine, consist mostly of other’s people imagination and realizations.

2. Where did the protection of “intellectual property” come from?

Case no 2a: Copyrights

Today’s copyrights comes from 16th century English censorship organizations and it was suggested, designed and enforced by distributors and printers. 16th century was the century, when first proper printing machines were introduced. That resulted in real explosion of diverse creations, artists. Because of the inspirational character of the easiness and speed of copying works, authors could create more than ever. “Authors’ laws ” (copyrights) weren’t in danger despite there was no authors “protection” system. Creators manufactured a lot of content, which was very disturbing for English Government, because it was afraid of propagation of seditious contents. So the government founded “The London Company of Stationers”, that had monopoly for all English printings and additionally could destroy all works printed illegally.

This system had been working just fine for one and a half century, but at the turn of the 17th century English Government loosened the knots of censorship and wanted to end distributors monopoly to authors delight. Salesmen, at risk of being thrown out on the street, designed a new strategy: they claimed that authors “have no means to distribute their work”, so they need printing machines, distribution network, supplies investment, typographic sets etc – things that can only be provided by a distributor. They came up with distributive copyrights , that limited the copying of the subject of law with the possibility of selling the rights whoever was interested (accurately predicting the fact, that in most of the cases author is going to resell his rights to his publisher).

The system was devised by publishers for publishers as an extension of their censorship monopoly. In them days, it seemed absurd for authors to demand limitations to their work, because why would they want returning to censorship, from which they have just escaped ? Coming up with distributive copyrights was an incredibly devious move of the distributors, that allowed them to survive untouched for the next 300 years till today.

More information in terms of copyrights and its origins can be found in Karl Fogel’s“Surprising History of Copyright and The Promise of a Post-Copyright World”.

Conclusion no 2a

From the logical point of view, there is no grounds for distributive copyrights protection system, that is an censorship extension and a limitation for human mind works distribution, should exist. If authors created more before “intellectual property” protection was introduced and other people’s creations were just inspirations for acting, abolishing “protection” is not going to result in creativity decrease as it’s claimed by organizations that fights piracy illegal copying.

“Anti-piracy” law sets a legal monopoly that blocks natural flow of thoughts, ideas and creations of imagination which limit human creativity by definition, the same as every other monopoly. It should be repealed as soon as possible.

Case no 2b: patent law

Patent law, similarly to copyrights, was created to protect unique innovations of some individual from copying and using this innovations by others. So patent’s core slightly differs from copyrights. In opposition to copyrights, patent is a very old “invention” because it was first used 500 years BC in a Greek city Sybaris.

Typical arguments of patent law supporters are:

Producer’s argument no 1: If there was no patent law, people would not be eager to invent things

  • Counter argument no 1:If people hadn’t have motivation to invent new things, how come we have developed as civilizations for 10,000 years before the patent law was invented? Does the lack of patent law made inventing wheel, fire, bow or breeding cattle impossible ? No.
  • Counter argument no 2:Do solid evidence with a 90% probability, which indicates that creators wouldn’t published their inventions, if they were unable to get monopoly in order to gain profits exist ?
  • Counter argument no 3:If above was supposed to be true, should we assume that, without patent protection most of the inventors wouldn’t publish their creations at all ? If that were true, we would also have to assume, that most of the inventors are extreme egoists, and likelihood of this particular situation is really low.
  • Counter argument 4:As far as 3rd counter argument is concerned, If there have never been a patent law, would any of the inventors come up with the idea not to publish his inventions, because he would not get protection? The same as artists would not thought up an idea of copyrights and would still publish everything under free license, also Inventors would publish their inventions freely if it weren’t for distributors which created the protection system.

Producer’s argument no 2: Without patent law, it would not be profitable for corporations to spend millions of dollars on R&D departments.

  • Counter argument:Of course, the argument stating that, corporations would not have any motivation for spending millions of dollars on research without being sure that they gain monopoly, is theoretically correct. Corporations act only in their own, purely egoistic, interest - therefore investments that won’t bring 100% long-or-short-term return are pointless from their point of view.However conceptual failure of this kind of thinking is that, we presuppose that corporations have to take care of new technologies research and development. Meanwhile, if there was no patent law, some different business model would emerge, which surely would take into consideration the fact, the one corporation cannot afford to spend large amount of money on R&D. Universe hates emptiness. Maybe this model would rely on non-profit R&D foundations. Another example can be universities, that develop loads of projects every year.Also Wikipedia’sLinux’s kernel Apache’s server or self-retorted machineRepRap improvement paths and other projects under free license, that are developed without any corporate guidance, shows that this development model is not only possible, but also may be extremely efficient.Using this model, president/founder decides on the development path for the foundation and corporations may (but don’t have to) support it by dedicating their workers time or by donations. But the example of Linux kernel shows, that investing in this kind of a business model is quite profitable for corporations and investors. (Appendix 1appendix 2 (PDF)).

Producer’s argument no 3: Because of the factors mentioned in argument 1 and 2, patent law accelerates civilization development.

  • Counter argument no 1:By definition, Patent law creates market monopoly, that limits possibilities all subjects apart from, the one who owns the patent. Other subjects cannot freely use patented technology, cannot improve it or create products, that are based on it. These are facts. So, if logical is, that monopoly restricts all people and companies apart from one how is it possible to accelerate development by slowing it down?Let’s consider the following example of an experimental race: Let’s say we deploy 10 sport racing cars on a track, and order every driver to drive at 60mph average. After each lap, we measure the average speed of all cars in general. We don’t need a lot of calculations much to notice, that average speed of all cars will be 60mph which equals the average speed of every single car.Now, let’s put “patent” into the system. We tell only one driver to drive at 120mph. After the race finishes, average of all cars equals 66mph. It’s just slightly more than in the first case.Now, let’s remove the “patent law” and allow every driver drive at the speed of 120mph. It’s not really surprising, that after measuring the average speed of all cars in general the result is 120mph.

    Of course, this example shows only the problem of patent’s idea core, all numbers are made up and and their precision is minimal.

  • Counter argument no 2:Does any signs of monopoly on the free market is stimulating or mayberetaining to this market development? If one company gets monopoly for some critical technology and using it cuts out the competitors, will the customer gain or loose, will the prices soar or sink ? I think the answer to this question is generally known, so why would it be any different with legal patent monopoly? Is this some kind of a magic monopoly ?
  • Counter argument no 3:Does any sort of a real-life market example, in which monopoly or one company domination is more stimulating for market growth and development exist ? Did AT&T monopoly make calls cheaper or more accessible ? Does Russia’s monopoly for gas deliveries for Poland and Ukraine make these countries have more gas at a lower price than countries that don’t rely on one provider solely ? Nope — and this are just few examples that can be presented. So, If there aren’t any examples (or perhaps there are, but in marginal quantities) that prove monopoly to be more stimulating than open competition, what are the reasons to believe that it will be any different with legal monopolies created by patent laws?
  • Counter argument no 4:Mental example: would “locking” groundbreaking inventions such as fire, wheel or money for 1000 years (patent protection period) by a privileged group of people, that would demand enormous tributes for every case of usage of this technologies, be beneficial or disadvantageous for mankind?

Conclusion no 2b

Logically, patent system does not serve healthy competition or customers. It’s pathological and completely unjustified (or justified, but only by greediness and egoism of privileged individuals) legal creation, that creates corporate monopolies, selfish ways of using others’ accomplishments, slowes down natural mankind development that has had been doing just fine for tens of thousand years without any “intellectual property” protection or unnatural monopolies. Having no proof, that this system is beneficial, it should be completely liquidated or replaced by a better solution.

To be continued
(two parts pending:
- the losses caused by “piracy” (i)
- and the ethics of “piracy” (ii))
- stay tuned!)

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Three ways to securely access remote internal networks and work from home http://polishlinux.org/linux/debian/three-ways-to-securely-access-remote-internal-networks-and-work-from-home/ http://polishlinux.org/linux/debian/three-ways-to-securely-access-remote-internal-networks-and-work-from-home/#comments Thu, 07 Jan 2010 21:59:23 +0000 fenio http://polishlinux.org/?p=1121

Remote access to a computer and internal network’s secured resources - all of it in a simple way that’s following well-known security’s best practices? Sounds impossible, but it’s not. How to achieve it explains Bartosz Feński aka fEnIo.

A computer network with a tight security should be separated from the outside world as much, as it’s possible. It’s often the case. Even if there is a over a dozen of devices(PCs), that play different parts assigned to them in terms of company’s infrastructure, usually there is one that separates them from others, a firewall and a router.

On the assumption that the company’s policy is not too strict we often have an free access to this kind of devices. It can be various internal services, databases, servers of whatever is necessary to run a current company. What if, after work, when we are home safe and sound, we still need to connect to one of those servers that are not accessible outside the internal network.

I’ll describe few ways to do it.

SSH ProxyCommand

The simplest and, as far as I reckon, the most often case is when just behind firewall there is a 2nd server accessible by SSH, but only for LAN users. It’s similar to the situation, where router does NAT, and server’s addresses behind him are from private address’ classes. Therefore, If we want to log in, we need to log in to the firewall first.

Sounds familiar ? How many times have you actually tried to do the following:

laptop$ ssh router
[password1]
router$ ssh server
[password2]
server$

I’ve done it millions of times, and if someone does something often enough there is a chance that it would be so infuriating that eventually someone will try to automate it. SSH share the same story.

Let’s make an configuration file on a laptop ~/.ssh/config:

Host server
ProxyCommand ssh router nc %h %p 2> /dev/null

For this configuration to work a program called netcat is necessary, but most of the distributions have it in high-priority packages so it’s often already installed, so… How does the server connection looks like ?

laptop$ ssh server
[password1]
[password2]
server$

Let’s generate a key so we won’t be bothered about all the passwords.

laptop$ ssh-keygen
laptop$ ssh-copy-id router
laptop$ ssh-copy-id server

Login process is much more easier now:

laptop$ ssh server
server$

The coolest thing about it all is the fact, that along with the possibility of logging in to a device that is not public-accessible, we also get the full set of SSH features. There is no problem in using scp, sshfs, forwarding Xs or to set a tunnel to other device through a server.

But what if…

laptop -> router1 -> router2 -> ... -> routerN -> server

There are no barriers to add several devices to ~/.ssh/config and automate the whole login process even if u need to log in to few middle devices before logging in to the right one. You just need to define the right proxy command.

SSH SOCKS

SSH problem is solved, but what if the service we try to get to is, for example, a WWW server? We can use text browsers from the device we logged in, but it’s not really elegant or convenient.

We can use,mentioned earlier, port forwarding, that along with automatic login to different devices is a pretty flexible solution, but we need to remember to add certain SSH commands to every service or setting it all up in ~/.ssh/config)….

… but SSH function SOCKS saves the day:

laptop$ ssh -D 8080 router
[password1]
router$

If we generated a key, then we don’t need to give a password. We need to set up localhost as a SOCKS server and port 8080 in our browser. All connections will be tunneled to the router and visible for the WWW server as if they were initiated from this device.

Not every applications let’s you use SOCKS server though, but there is a cure. It’s called tsocks. It’s a simple program, that with the help of LD_PRELOAD variable, makes applications use the alternative versions of the connect(), sendto(), socket() functions. Thanks to that the applications can use middle servers almost without any dedicated configuration, unconsciously if we may use this term in reference to binary beings.

The configuration file should look as follows:

server = 127.0.0.1
server_type = 5
server_port = 8080

Now the applications, we’d like to “deceive” should be run:

laptop$ tsocks application_without_socks_support

As I’ve just presented, with SSH and a simple program we can quite easily organize our work environment and bypass limitations caused by a firewall. We can’t solve all our problems though. Let’s take our old FTP for example. It needs 2 ports to communicate, so it can’t be deceived in the way shown above. Moreover, if there is 40 services run on 30 devices behind firewall SSH configuration will be exceptionally complex and hard to maintain.

Perfect would be a solution, in which our laptop with a certain address’ class simply connects to through a channel to the targeted devices in a way, that the device knows the connection came from a secured and trusted network.

OpenVPN

OpenVPN solves the problem. To the contrary to SSH-based solutions, that works on 7th layer (application), OpenVPN works on 3rd (network)or even 2nd (transport) layer so it’s entirely transparent for the software. Moreover, it comes with authentication and encryption, so we don’t loose anything comparing to SSH.

Although since version 4.3 OpenSSH makes 2/3 layer tunneling possible,
but its configuration stands next to impossible.

OpenVPN allows making advanced configurations and, for instance, setting up a secured connection between several corporate branches. I’ll limit the example and only show how to gain access in the case described at the beginning of this article. Laptop will be a client and a VPN server will be configured on a router.

I assume, that openvpn package is installed on the laptop and the router. Let’s generate a key (that will be used to encrypt and authenticate the transmission) on the router.

router$ openvpn --genkey --secret /etc/openvpn/static.key

And a configuration file /etc/openvpn/server.conf:

dev tun
ifconfig 10.8.0.1 10.8.0.2
secret static.key

10.8.x class’ addresses will be used to set up a tunnel. You are free to choose your own addresses.

One thing left is to run the server:

router$ sudo /etc/init.d/openvpn start

We should get one more interface

tun0      Link encap:UNSPEC
HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:10.8.0.1  P-t-P:10.8.0.2  Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

Moreover we need to unlock the 1194 port in firewall setup.

We copy generated static.key on the laptop and we create client configuration file /etc/openvpn/client.conf:

remote routers_address
dev tun
ifconfig 10.8.0.2 10.8.0.1
secret static.key
route 192.168.0.0 255.255.255.0

Now we switch routers_address to its actual address. Route option will make a new record in routing table visible and from now all transfer is directed to the set up tunnel.

Last but not least thing we have to do is to run VPN on the laptop:

laptop$ sudo /etc/init.d/openvpn start

Let’s look at the routing table:

10.8.0.1    0.0.0.0    255.255.255.255 UH  0    0    0 tun0
192.168.0.0 10.8.0.1   255.255.255.0   UG  0    0    0 tun0

That’s the way to set up the simplest configuration. Of course, as everything, It has its flaws. For example, everyone who has the key can access our network – sometimes though the key may fall into the wrong hands. OpenVPN has its own, more sophisticated authentication methods – simply get the generated key password-protected, but its security is far beyond this article framework.

Translated from Polish: Kamil Zawadzki

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KDE 4.4 dev: What’s new? http://polishlinux.org/kde/kde-44-dev-whats-new/ http://polishlinux.org/kde/kde-44-dev-whats-new/#comments Mon, 30 Nov 2009 09:31:40 +0000 Bastion http://polishlinux.org/?p=951

I have managed to find some time to cover the recent changes in the development version of KDE 4.4. The number of changes is not impressive but they are interesting enough to write an article.

kde44-1055000-desktop

Adding applets

There was a time when I complained about the convoluted process of adding new Plasma applets. Not anymore! Today I can say it’s easy and much more intuitive, although still not flawless. For instance, scrolling between the available applets horizontally is not very user-friendly.

The changes made here were cosmetic. The scrolling looks nicer and the information about the applets being displayed is more detailed.

kde44-1055000-add-applet

KRunner like YaKuake

A very nice change in KRunnera! Now we can configure it in the way that it’s displayed not in the centre of the screen but shows up in an elegant way at the top of the screen.

kde44-1055000-krunner-top

Animated Oxygen

Now the window decoration of Oxygen has all the items animated, making it seem more lively. The effects are delicate and it a good taste.

kde44-1055000-animated-oxygen

I was too lazy this time to make my own video, so I’ll use the one prepared by Nuno to illustrate what I’m talking about.

Direct link to video: http://www.youtube.com/watch?v=O5Cv0z0dqfk

Grouping windows

The best change ever is the window grouping feature. Now we can put together many windows into one and switch between them using the tabs located in the window title. Have you seen something like that before? Very useful!

kde44-1055000-group

kde44-1055000-grouped

Other changes

The module responsible for configuring the mouse actions have been finally cleared up, and the window with System settings got the tooltips.

kde44-1055000-ma

kde44-1055000-ss-toltip

Stability

To my great surprise, the whole thing works fast and the system is responsive. I haven’t encountered a single crash when playing with KDE 4.4 r1055000. This makes my hope that the next release of my favorite desktop envoronment will be a great success.

The original text was published on official Polish KDE blog: KDE 4.4 r1055000

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Media PC on Linux http://polishlinux.org/linux/ubuntu/pc-media-on-linux/ http://polishlinux.org/linux/ubuntu/pc-media-on-linux/#comments Wed, 11 Nov 2009 12:23:03 +0000 alkor http://polishlinux.org/?p=929

As an experiment I decided to build Media PC based on Linux. First of all I was wondering, how much did the Linux distributions evolve in the past few years (I’ve used Linux since a few years only on servers). The second thing is, I was fascinated by quite new, miniaturized hardware solutions based on Intel Atom processors. The third was, I wanted to check in real life the suitability of so called Media P..

Concerning the last one, after a tentative googling I made a few assumptions, which I’d like to achieve:

  • watching films/pictures in HD on my TV set;
  • listening to music (including webcast);
  • browsing on the TV set;
  • using everything as a simple NAS (Network Attached Storage) - mainly for a backup.

And the usage of all hardware should be not much involving, which means that I’d like it to ensure:

  • an easy allocation of media (that is data) in the device;
  • easy handling - the best option would be a remote control;
  • a quick start - optimal using a hibernation mechanism.

It’d also be good if the hardware was silent and didn’t use much energy. Not meaningless would be also fitting it all into a small and aesthetic case - looking more like an audio player than a PC (only with this assumption you can negotiate with the fair sex leaving the machine in a saloon - that is close to the TV set).;-)

2. Choosing the hardware

a. Mainboard/CPU

I chose a quite modern solution - ZOTAC IONITX-A - based on NVIDIA ION. The mainboard is small (standard Mini-ITX) and uses little energy. It’s equipped with a dual core Intel Atom N330 processor, so we’re still staying in the standard x86 architecture. The graphics processing is based on a GeForce 9400M chipset, which is very positive concerning usage under Linux (I mean the basic work of a graphic card, so as hardware decoding of popular video formats without overloading the CPU too much).

The mainboard is also very well equipped with outputs. So we have:

  • video outputs: VGA (D-Sub), DVI, HDMI (so we have digital outputs, which we can without any problem plug into a TV set);
  • an optical, digital audio output (it’ll come in useful for simply connecting the mainboard to an external Hi-Fi hardware);
  • even 10 USB slots (which can assure a pretty easy extension of the hardware);
  • a few additional ports - showed in the specification.

Concerning the network communication - the mainboard has a built-in wireless and Ethernet adapter (10/100/1000).

Additionally the hardware contains an external power supply, which allows to reduce the costs connected with a case. The overall cooling is unfortunately active (additional noise and mortality of the fan).

A full hardware specification can be found on the manufacturer’s website.

The price of the mainboard is approx 190 USD.

b. Case

On the polish market it was not easy to find many cases in Mini-ITX standard, especially those, who were easily available. At last the choice was: Aplus Cupid 1 Mini-ITX.

It came out to be a pretty good choice. From the quality the case looks better than on available photos in the net and by the way, it’s functional. At front there’s a slot for an optical drive (SLIM) with a closing panel:

  • two USB inputs (a perfect place for plugging in an USB keyboard/mouse) - there’s also a proper space between the inputs - without any problem I managed to plug in a pretty wide, additional wireless adapter and at the same time a pendrive;
  • a reader for memory cards, used often in cameras (4 slots, which support over 50 memory card formats);
  • a headphone input and a microphone input;

Theoretically the case is pretty good ventilated (the openings on the sides and on the top of the case ensure a pretty good air supply), but in some cases it might not be enough (more about cooling is described later in the article).

The price of the case is about 100 USD.

c. Hard drive

I equipped the hardware with a 2,5″ hard drive (a format well known from laptops) of 320 GB capacity (Seagate Momentus 7200.3, 7200 RPM, SATA/300). First I was afraid it’d be loud, but actually during work it’s almost not audible.

The price of the hard drive is around 100 USD.

d. Memory

I equipped the mainboard with two 2GB DDR2 sticks(800 MHz).

Both sticks cost about 60 USD

3. The components match and the network architecture.

After further googling i made the choice for Kubuntu distribution (version 9.04) - it’s quite up-to-date and based on Debian (my favourite distribution).

Then concerning an application as basis for the media center I decided to use the XBMC Media Center (it looks quite well rounded and since a while systematically developed). Not meaningless is also the fact that there’s an application out for iPhone XBMC remote, which allows a pretty nice control of the Media Center.

Before getting to work there’s also a simple network project of the whole device environment left - so the whole solution would fit very good into my own infrastructure (LAN and the audio-video devices). And it looks like that:

4. Installing Kubuntu

For the moment I don’t have any optical drive installed in the device (I’d like to install a Blu-ray adapter later on - the case has a free SLIM drive slot), so I chose an installation from a pendrive. This is where the portal pendrivelinux comes into handy. At least for the start I didn’t want to risk installing the 64-bit version and I decided to install the standard 32-bit version of the system.

Preparing a boot pendrive with Kubuntu under Windows is basically limited to a few simple steps.

After plugging the pendrive in to the USB slot and starting the device, we see an installation screen - I chose to install the system to the hard drive. The whole installation is quite smooth and takes 10-15 minutes.

5. First impression

The first run of the Media PC I made in the configuration:

  • a few years old LCD Samsung 913N (19″) monitor connected via D-sub;
  • wireless keyboard and mouse (Logitech Y-RAJ56A) connected via USB (more precisely the USB has a wireless signal receiver for the keyboard and mouse plugged in);
  • an Internet connection through the Ethernet (the plug is connected with the house router port).

A short while after running the machine I see a graphic KDE log in screen. After logging in on a previously created user I see the first problem - the resolution is barely 640×480. I’m not able to change the resolution in the KDE graphic configurator (start->computer->system settings->display). The program offers me at his best decreasing the resolution…to 320×200.

The next step is downloading the drivers for the graphic card from the NVIDIA website (Linux Display Driver - x86, Version: 185.18.14). After a successful installation of drivers I get the same problem - the change of resolution in the graphic environment is not possible.

After checking the /etc/X11/xorg.conf file it appears that the system didn’t recognize the monitor… finally based on materials found on the net I decided to reedit xorg.conf manually (mainly concerning the monitor settings). Bingo - I managed to run KDE in 1280×1024 resolution. An additional problem are still too small fonts, but I will leave this for now.

6. XBMC (XBMC Media Center)

In the background I run the system update (it’s mainly about security - I use for this purpose the graphic package manager). Then I install XBMC according to the description.

That means:

  • vi /etc/apt/sources-list and adding the entry:

deb http://ppa.launchpad.net/team-xbmc/jaunty-ppa/ubuntu jaunty main

deb-src http://ppa.launchpad.net/team-xbmc/jaunty-ppa/ubuntu jaunty main

  • importing a suitable GPG public key;
  • apt-get update
  • apt-get install xbmc

After a while I get an up and working XBMC (version 9.04.1 r20654).

During the install of patches and XBMC, I see that the system has found a built-in wireless network adapter: Atheros AR928X supporting the standards: 802.11 b/g/n.

The full information about this adapter given by lspci, looks like this:

04:00.0 Network controller: Atheros Communications Inc. AR928X Wireless Network Adapter (PCI-Express) (rev 01)

After the system update I make a simple test using a graphic network manager (KNetworkManager) - based on connecting to my wireless network, secured with WPA-PSK mechanism. Automatically the needed network settings are being assigned (using DHCP). The wireless LAN connection procedure itself is not the most comfortable one (2 times I received an error concerning an “unexpected end” of certain processes, several times I needed to type in my wireless access password). The user interface of KNetworkManager is also not very intuitive…

In the end to test the stability of the wireless connection I install Firefox and browse through some websites with news (e.g. linuxnews.pl :-) . The browser works prompt and the network without any problems (the computer stands barely one meter from the Access Point).

Before plugging the device in to the TV, I also check the device temperature. It’s relatively low - the sensor on the chipset shows 50 degrees Celsius and the case is even cool.

7. A test on the TV

I connect the hardware to a 46″ Samsung TV, using the HDMI interface. The TV supports Full HD - I will have an opportunity to test the whole thing working in 1920×1080 resolution. The wireless keyboard and mouse are the whole time connected to the front panel of the case (through the before mentioned adapter). I’ll be testing the Internet connection, using the built-in wireless LAN.

This is how the device looks like after connecting (without the keyboard/mouse):

The time from pressing the “Power” button to the GRUB welcome screen takes barely a few seconds. And the time from selecting the kernel in GRUB to the KDE logging screen takes barely 34 seconds (more accurate performance tests will be shown in the next part of the article).

The keyboard and the mouse work properly, even if they’re almost 3 meters away from the USB adapter. So I can very comfortable use the device from my armchair.:-)

But I can clearly see problems with the fonts. This time they’re way too large. I check the resolution settings and set it to 1920×1080 - this time without any problems. Unfortunately the fonts are still way too big.

In the meantime I can see that the wireless signal is very weak (at least this is what the KDE network manager shows). I can connect to the Access Point only after installing the directional antenna - the signal quality is still on an unsatisfactory level - still are these only 20%, and the connection isn’t stable.

So I decide to use an Edimax wireless LAN, based on the RaLink chipset (RT2501USB Wireless Adapter). I install wicd (KNetworkManager somehow didn’t click) and using this software I configure the wireless connection through Edimax. This time the signal quality is 75%.

The googling shows that the problems with LAN cards based on the AR928X system is very well known. And it’s not the fault of the card, but of the ath9k driver. What’s interesting, the problem can be even solved in the latest kernels. In my case the problem is caused by the kernel 2.6.28-11 (the update to 2.6.28-13 and installing the package linux-modules-backports-jaunty unfortunately didn’t bring any improvements; look description).

I run XBMC and change the resolution to 1920×1080 (menu: settings). After restarting XBMC, the whole thing looks really nice.

I run a few passed tests:

  • a slideshow from a pendrive connected to the front panel;
  • running an internet radio (the built-in in XBMC possibility of choosing a radio station available at shoutcast.com);
  • running a movie from a .VOB file - in low resolution (the file was given on an external USB drive, which had to be connected to a rear slot on the mainboard);
  • running a movie recorded with a camera (cards: xD, Compact Flash);
  • running music from a WMA file;
  • running a weather report.

All test are positive (that is I get as minimum a basic functionality, which I expected from a certain module).

My target is to have the audio signal output through HDMI (TV) or an optical digital output (a Hi-Fi stereo). In the standard configuration the audio is routed on a headphone output.

After shutting down the device I see another shortcoming - the case is very hot. It’s most probably because of a very low air circulation on my shelf, where I’ve placed the device. After running the device one more time I read the GPU temperature (it can be read by the command: nvidia-settings -c :0 -tq GPUCoreTemp) - it’s 65 degree Celsius. Unfortunately I’m not able to check the CPU temperature under Linux (the latest compilation of lm-sensors 3.1.1 also didn’t work).

8. Summary

As for now I can say about the hardware that it’s “linux-friendly”. I’m also very positive surprised by the performance of the whole solution (as well in case of the graphics, as of the processor - more about this comes with the next article).

Concerning the hardware problems, what disturbs me for now, there’s only:

  • not properly working drivers for the built-in wireless LAN;
  • no possibility of reading from Linux the temperature of the CPU/built-in fan speed.

But after reading some materials in the net, I think a solution for this topics is only a matter of time. Other shortcomings I experienced are:

  • resolution problems in the X Window;
  • font problem in the graphic environment (DPI);
  • a not very intuitive NVIDIA drivers installation;
  • a way too uncomfortable method of configuring the wireless LAN (KNetworkManager available in KDE).

They’re not that difficult problems, but for an occasional Linux user, who would like to fast configure his Media Center, they can be annoying or almost even not to solve in reasonable time.

Till now I was able to configure the device in a way, in which it can be relatively easy used. In the next part of the article I will describe some facilities, which can make the work with the device really comfortable:

This is a translation of the article Media PC na Linuksie by Michal Sajdak (michal.sajdak@securitum.pl)

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Gimp Tricks: Selective Colorization http://polishlinux.org/apps/graphics/gimp-tricks-selective-colorization/ http://polishlinux.org/apps/graphics/gimp-tricks-selective-colorization/#comments Mon, 29 Jun 2009 17:29:25 +0000 Scott http://polishlinux.org/?p=552 Today, I’m going to teach you how to first simply create a black and white image from a color photo, then to selectively colorize any portion of the photo. I’m not going to directly adapt a Photoshop tutorial because this is a very simple process, but if you want to find the Photoshop way of doing this, simply google “selective colorization” and you’ll get about five gazillion results. For those of you keeping track, yes, this is the first Gimparoo original.

So, as I mentioned in the previous post, flickr’s CC license image search tool is totally awesome, and that’s where I found today’s image. In the spirit of the license, I’m attributing flickr user Daniel Montesinos as the original photographer. Thank you Daniel. I will also make my finished product available with the same license provisions on my flickr page.

On with the show!

  1. Open your photograph in the GIMP and duplicate the background layer. Name the new layer B&W or something descriptive like that.
  2. desat.layer

  3. Click on Layer>Color>Desaturate. This will make the layer appear black and white even though it’s still in RGB. That’s not terribly important for this tutorial, but it can be if you’re wanting to do some more advanced blending. But that’s a topic for another day.
  4. Right click your B&W layer and click Add layer mask
  5. layer.mask
    Now you are all set to begin colorizing an area. What you’re going to do is paint black over the masked area to reveal the color layer beneath. I use a Wacom tablet for this which I find infinitely more usable than a mouse since I can use the pressure sensitivity to do neat things like change the diameter or hardness of the brush dynamically, but it’s not that hard with a mouse either. Onward!

  6. With a soft brush selected and set to black, start painting inside the area you want to reveal. In our case, the flower petals and leaves and stem of the center flower. Zoom way in (Shift++) to get the tiny little hairs. Notice the layer mask will have a black and white thumbnail of the areas you’re painting.
  7. layer.mask.2

  8. Once you’ve got the area you want colorized revealed, you may want to play with the color a little. I increased the saturation of the color layer in order to make it stand out a little more. Here’s the final revision:
  9. Bad Hair Day redux

Thank you for following along today. Stick around for more photo retouching and editing. I’ll try to pick something a little more in depth for the next topic.

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The Right To Be Free http://polishlinux.org/gnu/the-right-to-be-free/ http://polishlinux.org/gnu/the-right-to-be-free/#comments Sun, 21 Jun 2009 20:03:02 +0000 Adam M. http://polishlinux.org/?p=912

This article is aimed mainly at the supporters of culture without boundaries, the people who have been convinced by Lawrence Lessig (the author of “The Free Culture”) and Richard M. Stallman’s ideas of fighting the bad copyright and non-free software licenses.

Everybody knows, that DRM is bad. Also everybody knows, that Open Source is just a compromise and a stage in transition to a close-to-ideal system, which Free Software is. The free culture advocates have written dozens of books, heaps of articles and hundreds and thousands of blog entries showing the sense of standing against the law, organizations and corporations who bound (or try to put boundaries) on our freedom. Also stacks and heaps of text has been produced showing why should we boycott “bad” products designed by the aforementioned villains, the products being designed to achieve one obvious goal : to maximize profit, regardless of the consumer’s good.

The effects of these publications can easily be recognized : more and more people are now Open Source aware (mixing terms with Free Software though), there are more and more users of free/open systems, the closed formats are being pushed out, rejected by conscious users (just to mention the Ogg and FLAC’s success or even ODF’s victory over OOXML), and the new portals like do.org.pl or osnews.pl are in bloom, attracting more and more web community.

Step by step, led by the leaders like the creator of the Linux kernel - Linus Torvalds, the creator of the Creative Commons license - Lawrence Lessig or the creator of Free Software philosophy - Richard Matthew Stallman, we go on convincing more and more people and changing our reality.

However let’s try to look at the other side of the coin : with all these activities, trying to “free” the virtual world, including the user, aren’t we sometimes, however rarely, effectively restricting the freedom of those, who we want to be free ?

DRM
The F(L)OSS community opposition to DRM is widespread and firm. This comes from the fact, that the digital rights management technology is actually used to digitally manage restrictions. That’s why this post to LKML by Linus Torvalds started quite a storm : (http://thread.gmane.org/gmane.linux.kernel/110368)

I want to make it clear that DRM is perfectly ok with Linux!
(…)
And like the software patent issue, I also don’t necessarily like DRM myself, but I still ended up feeling the same: I’m an “Oppenheimer”, and I refuse to play politics with Linux, and I think you can use Linux for whatever you want to - which very much includes things I don’t necessarily personally approve of.

Following the thread, Linus posted (http://article.gmane.org/gmane.linux.kernel/110400) also the following:

The technology itself is pretty neutral, and I’m personally pretty optimistic that _especially_ in an open-source environment we will find that most of the actual effort is going to be going into making security be a _pro_consumer_ thing. Security for the user, not to screw the user.
Put another way: I’d rather embrace it for the positive things it can do for us, than have _others_ embrace it for the things it can do for them.

An important question follows then : what is positive that DRM can do for us ? I decided to ask Google (the original question in polish). The first page of results only lists one text, being a news entry informing about trying to create the human face to DRM, by Valve (Steamworks); and another one, where its authors, nota bene the Internet shop software creators, trying to familiarize it to users. With our knowledge of the technology, I guess nobody is actually convinced reading an article written by people making money using the solution widely regarded as disruptive; All other results on the Google were actually contra-DRM : a text listing 10 cases against DRM :10 argumentów przeciw DRM, a not too acceptive tone text on Vagla.pl, a blog entry with a suggestive name Bye bye DRM, and so forth. Then I tried English Google, which yielded more sane cases, but their argumentation has been already long ago neutralized with - just to mention - Stallman’s article Opposing DRM.

So in the name of freedom (why shouldn’t somebody implement DRM on Linux ? We might not like it, but it’s a free country^Wsociety!) we seem to have created a loophole that could be used to win the market, that opposed DRM from its very beginnings and seemed to be closed tight for it.

But then, again. If Linux was relicensed to GPLv3, the user would have some rights removed, that were granted earlier on. Everything would boil down to resemble the closed source market : buy/take it, but you’re not allowed to do with (my) code something that I don’t like. Least of what I like is DRM, so don’t even try that!

The question, if when defending against bad technology, we can accept some restrictions, is is hard to answer by single statement. On one side, this seems to be good way to fight the danger to the community, on the other, it is a restriction on the freedoms we advocate most. The decision needs to be taken by the software developers (do they regard DRM as so bad, that they really have to restrict its creation/usage by other users at work?), but I’d also advocate to name this technology mainly as user-unfriendly.

My point is, we should not embrace a “bad” technology only because somebody “might” use it the “good” way, given that nobody ever tried to do it yet. And it’s not to be compared do P2P networks (which we defend), that might be used to share illegal copies of copyrighted works, because lots of us use them to share works (see Jamendo or GNU/Linux distros) - the P2P networks have bright areas, DRM doesn’t.

Quoting Torvalds, he treats this issue the “Oppenheimer” way. However, the latter when confronted with the catastrophic outcome of the atomic bomb explosion, which his research actually made possible, cited from Bhagavad-Gita : I became the Death, the Destroyer of Worlds. The FLOSS community, could become Torvald’s Hiroshima and Nagasaki. Means, us. I hope it never happens.

Stallman’s leadership
Not so long ago, there was a discussion, later turned into a flame war, between RMS and Open BSD developers (Real men don’t attack straw men and Play Nice - Real men don’t attack straw men (Theo)), where Stallman tried to make a point on why he can’t recommend this distribution, because it contains non-free, “bad”, software. According to RMS argumentation, it is enough to have the non-free software available to install, to disqualify the system freedom-wise, and it is the one and only condition that he takes into account recommending an OS.

Due to this reason, e.g. the Open BSD is a non-starter, forget its totally free default configuration. One can agree or not - this topic is so wide, that deserves a separate article, but the words that Stallman typed way into the discussion are worth noticing :

The Adobe flash plug-in is non-free software, and people should not
install it, or suggest installing it, or even tell people it exists.
That Firefox offers to install it is a very bad thing.

sourced from: Re: Real men don’t attack straw men

There we actually are told, that no user shall ever know about the non-free existence if he is not totally convinced not to use it, otherwise he might be tempted to install it.

This suggests what ? This suggests us to free people per-force. Looks like communist practices, where people were ‘protected’ from ‘damaging’ content by hiding it, so the population wouldn’t choose ‘bad’. Disinformation was a bread and butter, and RMS is now suggesting us to do it.
OK, this is not totally true, nobody hints us to say untrue, it is only about not telling the whole picture, omitting one solution. Hold on a sec, it is a form of lying! Additionally this way we take peoples right to subdue themselves, away from them, the right being one of the basic freedoms.

Trapped into freedom
The right to be free is a freedom of choice. Everybody can, and at least they should, decide themselves if the solution he wants, including all the restrictions, is appropriate. Given the above, an informational action (already in place, as I mentioned earlier) is much better than what RMS suggests - letting people know what they decide on choosing non-free software.

What Stallman pitches for, is quite accurately depicted by what the wider public knows about the freedom-promoting community. A few years ago, a few people actually knew about Richard’s vision of total freedom (GPL, BSD and similar licenses). Close to nobody also used the free operating systems, and when somebody got to mention it in the wide, he did it rather to discourage the users (ref the Progr@m aired not so long ago in polish commercial TV information channel TVN24). As one can now realize, so our community starts to look from the outside : we are beginning to go to the lengths of restricting people’s rights in the name of freedom.

Finishing this article, I’d like to summarize, giving the example of Linus Torvalds again, this one being, in my (author’s) opinion, a good cause to think, whether we have the right to enforce our perception of “freedom” on others. In my opinion, the soft forms of promotion, that is informational and convincing actions are better than sending “thunders” onto sinners, evangelizing and calls to convert (using Mesianism 2.0 like tone) with addition of tainting the “heretics”. According to Linus then, he might be wrong. That he doesn’t approve on something, doesn’t mean it is bone-deep “bad”, and there should be actually a path left for somebody to try to create user-friendly solution here. So, we might approve of this idea or not, but it is clear to see, that it is much more flexible and leaves the community more space to manoeuvrer than the Stallman’s model.

Well we don’t have to choose between two extremely different standards here. The history of mankind is full of stories of looking for a golden proportion, so, we, the IT crowd, following Horace’s advice, should try to define these for our freedom. It should be somewhere in between the given examples - giving the user the right to exercise his freedom in full, freedom to choose, at the same time, not being allowed to restrict the freedoms of other people. The answer is there somewhere, only time will tell, exactly where.

Good luck to you and me while searching.

Translated-by : el es

Editor’s note: the following article has been originally written in Polish by darcnet 25 April 2009. I had to submit it with some usual haste, and with lack of any taste :), so please forgive my mistake I just mentioned the author here, not in the header. I will try to fix it shortly guys.
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Amarok 2.1 is out & Installing Amarok 2.1 on Ubuntu 9.04 Jaunty http://polishlinux.org/linux/ubuntu/amarok-21-is-out-installing-amarok-21-on-ubuntu-904-jaunty/ http://polishlinux.org/linux/ubuntu/amarok-21-is-out-installing-amarok-21-on-ubuntu-904-jaunty/#comments Sat, 13 Jun 2009 11:08:35 +0000 SathyaBhat http://polishlinux.org/?p=907 I was catching up on some feeds yesterday, and this piece of news caught my eye - Amarok 2.1 released. Being a long time Amarok fan ( heck Amarok itself was catalyst to make me use my SUSE 10.0 use full time) - I read the article with great interest. Amarok 2 users would know that Amarok 2 series is a shadow of its old Amarok 1.4(”Amarok Classic” self) - and quite a few people still prefer Amarok classic to Amarok 2 - primararily because of Amarok’s missing support for visualizations, equalizer amongst others. I don’t use equalizers - and as for visualization - well don’t use that either.

Coming back to the point - Amarok 2.0 release was somewhat like a KDE 4.0 release - more of a framework release, basic building blocks in place, but just about. I terribly missed queuing support, and promptly stopped using Amarok (and on a different note, switched to Gnome - Rhythmbox is sweet!). Amarok 2.1 brings in a lot of improvements - and the most obvious one is the improvements to the playlist and main play window area. With Amarok 2.0 - the playlist area was a bit of a hit and a miss the lyrics, Wikipedia info was there but wasn’t obvious, you had to “Add the plasma” and once you added multiple plasma(”applets”) you had no idea how many were there without “zooming out” and overlooking it. And with the zoom effect not at its slickest best it was a big chore. Amarok 2.1 fixes this by adding buttons which bring up the respective applets making it easy to remove the exisitng applets, add new ones or simply re-arrange them.

amarok-21

Another nice feature introduced is “bookmarking” - any track with a length greater than 10minutes and Amarok will save the last listened position, so when you return to playing the track, it resumes from the last bookmarked place. You can also manually bookmark any track btw.

There are other improvements too - only I couldn’t figure it because the damned player wouldn’t play anything :|
I’ve put my query in Ubuntu forums over here - my problem is that Amarok just refuses to play any local files. If any of my readers can help me figure this out, it’ll be great, just drop a comment.

As for installing Amarok, its pretty straightforward, Goto System -> Administration -> Software Sources. Click on third party sources, click on Add, enter the below line.

deb http://ppa.launchpad.net/kubuntu-ppa/backports/ubuntu jaunty main

Save, update. Launch Synaptic, search for amarok and mark for install.

That’s it, Amarok 2.1 is ready to rock. Were you able to get Amarok successful run on your system ? Do drop a comment.

Originally posted at author’s blog

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