Sadly, openSUSE conference 2014 is finally over

openSUSE conference 2014 (oSC14) in Dubrovnik is over and there are new memories to keep. At times, being the one to push the organization on the road to oSC14 was rough and it took a lot of energy to achieve what was done. But after all that happened, I can say I am left with only positive feelings of a great achievement. Of course, I feel relieved that it is over and that everything that we planned went smoothly. Hanging out for five days with the awesome openSUSE community and awesome lectures made all the casual organization hiccups, stress and problems worth it. Actually, I didn’t get to see most of the lectures because organizing took all of my time, so watching the recordings is one of the first things on my checklist. Also, on-site feedback from other traveling Geekos has been very positive which gives me at least some reason to believe that my impression of the conference is not too subjective.

Geekos having a party
The Geeko party

Sadly, oSC14 is over and the feeling of achievement is only surpassed by the feeling of eagerly awaiting what Hans prepares for us at oSC15 in The Hague. Hopefully, I will also be able to help in some way.

In the end, to all the unsung heroes – everyone who helped make the conference happen – volunteers, University of Dubrovnik, lecturers, core team, video team, sponsors… thank you so much and continue having a lot of fun!


openSUSE conference time of the year is here!

oSC14 logoAfter months of planning, pushing the organization of the openSUSE conference 2014 at the University of Dubrovnik, and having more loads of work then ever before, it is almost time. Somehow I survived, and somehow my daily work survived too. I used most of this Easter weekend to sleep. That wasn’t the plan, but a few days that pushed me to relax exposed how much I actually exhausted myself in the last few weeks.

The conference work isn’t over yet, but the hardest and most critical things (preparations) have been taken care of. The execution of the conference and having fun part of it is yet to come. Although I know how hectic conference days can be, I feel that this will be a relaxing part. Geekos are coming, and we’ll have a great time!

So, in 3 days, April 24th, we will kick it off – the openSUSE conference will start with a day of venue preparations that ends with a welcome party in the Sesame tavern, at 6pm. The street address is Branitelja Dubrovnika 23, or Dante Alighieria b.b., more contact info is available at the tavern’s site – We prepared some food and drinks, so I encourage all weary travelling Geekos to join us and and prepare for the conference.

Also, if you are new to the openSUSE conference, entry is completely free, and so is the welcome party, so everyone is welcome to drop by and have fun with the Geekos! Topics are not something only openSUSE users will appreciate, there are interesting things for anyone interested in bleeding edge technology, open source, free software and Linux to hear. Take a look a the conference schedule, make your traveling arrangements and have a lot of fun! See you there! 🙂

openSUSE conference 2014 in Dubrovnik, Croatia!

openSUSE Conference 2013
oSC13 – community

Again, a new opportunity appeared – I have things to write on this poor neglected blog. I promised myself I would not let this one just go by, and would write at least a short post that roughly sums up how it came to be that oSC14 will take place in Dubrovnik, and about my visit to oSC13.

I have had the privilege to visit openSUSE conference 2013, in Thessaloniki this year. After a couple years trying and for various reasons in the end being unable to go, the universe has finally decided to get me there in an exciting way.

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A quick review of the Prestigio MultiPad 8 Ultra Duo

After a long and painful period in which I couldn’t decide whether I really need a tablet, I bought a Prestigio Multipad 8 ultra duo. When deciding to buy a tablet, I couldn’t see clear alternatives in the market. That is, if price is a factor. And it is to me. The reason is, there are not enough quality 4:3 tablets on the market. There are the 10” ones that are OK even if they are 16:9. The good ones are either rather expensive, or cheap and heavy. In fact, I still don’t find the lighter ones light enough… maybe in a year or two?

Then there’s the Nexus 7. It’s too small, and it’s 16:9. That means I can’t read most of the Websites or PDF documents comfortably without panning and zooming. All the other 7” tablets fell out of the competition for the same reasons. The Nexus 10 … seems more than OK, except it’s not cheap enough. 🙂

So that leaves me with 8” tablets which seems to me as a sweet spot. Apple gets it, but there are actually very few 8” Android tablets. So why Prestigio? There are very few reviews of it, but none are negative. It is also very cheap. It has reasonable processing power. So here’s a quick review…

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The only way to configure Tomcat 7 in 2012

Java.. and things in its ecosystem… tend to be inspirational. For instance I recently had to use Tomcat to deploy and test a few applications. One of those required more than 128MB of heap memory. Yes, by default, Tomcat 7 loads up with a Java heap size limited to 128MB. So, increasing it should be easy, right? Just a few clicks away in the documentation on the official site, right?


In 2012, Tomcat does not seem have a configuration file in which this can be edited (when I Google for something more than 15min, and don’t find it.. it probably doesn’t exist).

So people tend to hack the script, that is used to start the server up. Which is wrong. The right way is to put all the customizations into a file – in the same folder as Of course. Server configuration through shell script variables. Such intuitiveness and yet it’s the last place anyone would look. Of course, sarcasm…

So.. find your, create in the same directory and write something like this into it:

export JAVA_OPTS=”-Xms256m -Xmx1024m”

This will set initial heap size to 256MB, and maximum to 1024MB. And there you have it. Additional usable shell variables, uh.. I mean configuration options, are listed in the beginning of the, commented out with descriptions.

Why “Open” matters

Be it computer science, data, government, science or NASA the importance of open is becoming pervasive. Openness, in all the various fields, implies community effort. A community of people that are passionate about something and open to contribute time and effort to experience a feeling of accomplishment. I’ve been using Linux and open tech for years now and only lately I started thinking about this. It was just something I took for granted, and the problem was, I assumed everyone else knew and understood what I did.

But many people with both technical and non technical background don’t understand or even know how important it is to resist completely closing down to a corporate mindset that is selling, having little transparency and keeping the knowledge “secure” because the competition will beat or steal from ‘us’. This closed tradition is the reason many companies do things that have already been done over and over again. Think about this and it becomes apparent that this way is extremely inefficient. It greatly slows progress and innovation.

Through cooperation and inclusion, we significantly increase our resources. Through secrecy and exclusion we have to reinvent and learn things other people may already know and may be very good at. In a nutshell, that’s all there is to openness. Accept other people’s gift of knowledge and work so we don’t repeat the same mistakes and work many times.

When “Open” has no alternative

So, does this mean I think closed stuff is bad? Like Microsoft or Apple? Not really. Closed also works and in some cases even better. There’s nothing that is as shiny or can be made to look as shiny as apple products. Also, they work for what they’re built for. And really well it seems. But there are things where open simply has no alternative. Science, education and government. These are the main areas where we should have no alternatives to openness.

These are also activities that push the world forward, activities that unify and develop communities and can achieve real long lasting progress! When you think of any of these, the first thing that comest to mind actually are communities – scientists, educators and students, countries – people connected in achieving common goals. I don’t think I know a person that would say they love the fact that everything is a product for the consuming masses. And some things don’t have to be. We who understand there are viable alternatives are bound to promote them and educate others until mainstream is the right stream. Croatia seems to be starting on that way, and I hope to get a chance to contribute and witness true success!

Direct rendering with OpenSUSE 12.1 and official Radeon driver (fglrx)

Installation of the official ATI (fglrx) driver with 1-click install link on the openSUSE wiki, or by adding the repository also listed on the wiki, seems not to work properly, that is, direct rendering seems to stay disabled after installation. The fix is quite simple, as root, copy paste this into terminal:

cd /usr/lib64
rm /usr/lib64/
rm /usr/lib64/
rm /usr/lib64/
ln -s /usr/X11R6/lib64/fglrx/
ln -s /usr/X11R6/lib64/fglrx/
ln -s /usr/X11R6/lib64/fglrx/

Optionally, backup the original and files in /usr/lib64. If the system is not 64bit, remove the 64 part of lib64 everywhere. That’s it. After log out – log in, direct rendering should be working. Fire up a terminal and execute glxgears. If it doesn’t complain in the terminal there is no direct rendering, everything works, like in the pic below.

How glxgears start when direct rendering works