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System & Utilities

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I’m Going To Akademy; So Is Kolab

System & Utilities

So, its that time of year again, the annual meeting of all things KDE… Akademy! This year it is coming to you from Tallin, Estonia. This year will be my 6th outing to the event :)

Of course, KDE is very dear to me and to Kolab and so, in addition to me, there will be a few other members of the Kolab community will meet at this year’s Akademy. Key contributors Christian Mollekopf and Jeroen van Meeuwen will be present and available to discuss Kolab related issues. Jeroen will also give a talk about release engineering processes using KDE as an example. His experience from the Fedora Project, Cyrus IMAP, Cyrus SASL and from his roleas a Systems Architect at Kolab Systems provides him with ample experience to give some insight into how release engineering and quality assurance within the fast-paced KDE project could be improved further.

The Kolaborators will also be taking part in a Task Management sprint featuring more...

Подробнее | Разместил: Planet KDE | Дата: 28.06.2012 | Прочитано: 578 | Комментарии

Walking the Extra Mile

System & Utilities

Humps for 1 mile by Wendy on Flickr

If you have been reading my blog for a while, you know I tend to get obsessed with fixing little details in KDE applications which annoy me. I like doing this, but this is the kind of task which cannot be done by a lonesome coder if one wants to make a significant difference.

Other free software projects have launched initiatives in the past to get those little details ironed out. You may have heard about Ubuntu Papercuts, Fedora Fit and Finish or Gnome Every Detail Matters initiatives.

I want to start a similar initiative for KDE. To do so, I registered a BoF this year at Akademy, named “the Extra Mile”. The goal of this BoF is not to get started at fixing bugs right away, but rather discuss how we can organize ourself to make this initiative a success. I want to discuss topics such as:

Подробнее | Разместил: Planet KDE | Дата: 28.06.2012 | Прочитано: 550 | Комментарии

Print Manager 0.1.0 Released!

System & Utilities


Release soon and release often wasn’t really the case of print-manager, I started this project 2 years ago, and this is the first official release. I’ve been waiting for this moment for so long which I can’t say I’m not super happy!!!

First off I REALLY want to give a BIG THANK YOU to all who contributed to my fund raising campaign, without it, this project would have to wait even more, because without a real printer testing the “Add New Printer” feature is real hard, even tho I don’t have all printer models available out there with a printer I can at least guess what s-c-p (system-config-printer) did.

My new printer and monitor :D

It’s been a while since my last blog, but the truth is that there is a lot I’m doing under the hood of the applications I develop, for example PackageKit is passing through some real deep changes which will change a more...

Подробнее | Разместил: Planet KDE | Дата: 28.06.2012 | Прочитано: 649 | Комментарии

Going to Akademy -- for the sixth time

System & Utilities

Pretty incredible... I've been working on Krita for over nine years now, and it's over ten years since I did my first hack in KDE. I'm starting to feel like a dinosour. And this will be my sixth Akademy!

I've been to Malaga, which was awesome until I got sick, then I skipped Dublin (where Krita got App of the Year award!), went to Glasgow (where my luggage got caught in the terrorist attack on the airport), skipped Sint-Katelijne-Waver, skipped Gran Canaria, went to Tampere, went to Berlin and now to Tallinn.

Every Akademy I've attended was different, not just because the venues were different, but because KDE as a project is always on the move. Malaga was the first time I heard of the plans for KDE4, and they sounded awesome, and in Glasgow people presented the first results of all that effort, which turned to be -- awesome! And I think that KDE has gone from strength to strength. Sure, we need more polish and we need to take better care of bugs. But I maintain that for more...

Подробнее | Разместил: Planet KDE | Дата: 28.06.2012 | Прочитано: 486 | Комментарии

[GSoC] Templates in KDevelop – Week 5

System & Utilities

My last report (here) was full of pictures, but since then I’ve spent more time polishing the functionality, behind-the-scene improvements, and fixing bugs. However, the mid-term evaluation is approaching, so I think let everybody know what’s the state of things. I’m happy with my progress, my schedule was a bit vague, but I think I’m ahead of it. So far I’m still enjoying it, and I bought a more comfortable chair, so I have little problems with working long hours.

I split out some functionality to make code more modular, which also allowed me to write unit tests for much of the newly added classes. The main parts of the code (TemplateRenderer, TemplateClassGenerator and TemplatesModel) are covered with test cases.

Class Templates

My main focus was still on templates for creating new classes. I slowly decided on the variables passed to templates. They are also documented, and I think I can start writing more templates about now. The C++ plugin adds some variables of its own, such as namespaces,

Since KDevelop’s more...

Подробнее | Разместил: Planet KDE | Дата: 28.06.2012 | Прочитано: 617 | Комментарии

Krita binary packages

System & Utilities

So some time ago Simon Legrand asked whether it would be possible to provide a Krita package for CentOS 5. That's ancient, but it's what Autodesk's Maya is certified for, so that's what film artists use.

My first gut feeling was yes, but it's going to be a hell of a lot of work. My second urge was to say, "no -- we provide source, not binaries.". Then I finally thought "why not give it a try -- could be interesting."

And yes, it turned out to be interesting. Basically, I made three packages: one for CentOS 5 32 bits, one for CentOS 5 64 bits, one for CentOS 6 64 bits. CentOS 5 really means starting from the ground up: I had to install a new shared-mime-info to start with. But once the VM is setup, everything is a breeze, and now I've got "nice" tarballs.

They unpack in your home dir, you enter the "krita" directory and execute the script. The currently most interesting package contains the new OpenColorIO-based lut docker.

Apparently they also work on Debian Testing... more...

Подробнее | Разместил: Planet KDE | Дата: 28.06.2012 | Прочитано: 488 | Комментарии

Akademy 2012

System & Utilities

Akademy 2012 banner

I’ll be talking about accessibility for KDE on Sunday afternoon, please join me and help getting your application into the hands of ever more users.

At the same time I’ll be happy to talk about the Qt Project. And I’m looking forward to meeting so many old and new friends.

Подробнее | Разместил: Planet KDE | Дата: 28.06.2012 | Прочитано: 593 | Комментарии

Akademy 2012 / OS X: testers wanted!

System & Utilities

I'll be at Akademy 2012 after three years of absence. I have been inactive for years in KDE because of my tough life tangled with loads of jobs to be done. Now I can join again because my duty is finally over! (you know, most of men in South Korea have duty) I'll be there on the first of July. Too bad I can't be joining conference sessions because my flight schedule is screwed up :( But I can't wait to meet great people out there.

Now back to Konstruktor...

OS X preview build of Konstruktor 0.9.9-beta2 is available. Download from here. more...

Подробнее | Разместил: Planet KDE | Дата: 28.06.2012 | Прочитано: 536 | Комментарии

Download Kde SC 4.9 Release Candidate 1

System & Utilities

KDE Software Compilation 4.9 will be released on August and it will contain features such as Qt Quick in Plasma Workspaces, improved searching, sorting, display and inline rename on Dolphin, better integration of Activities for files, as well as lots of performance improvements and bugfixes to improve the overall user experience.

Подробнее | Разместил: KDE News | Дата: 28.06.2012 | Прочитано: 562 | Комментарии

Your chance to help #2: Improving bugzilla for old developers

System & Utilities

A while ago our amazing sysadmins upgraded our bugzilla installation from something aging to something more modern. Hurrah! We are not a billion years behind in another software! Hurrah!

Unfortunately this meant we lost some of our ¿custom? code that allowed to show the Votes column in searches like this (click on the change columns link at the end).

One can still see the votes in a particular bug, but for things like wishes it was very useful to be able of sorting by votes.

So it would be extremely cool if you can try to implement this, be warned, it's probably not going to be easy to implement and moreover bugzilla is in perl, but i'll owe you a few beers if you make it :-)

If you want to help do not hesitate to contact me on and I'll forward you to the appropriate people, or even better just join the #kde-sysadmin channel in and present yourself as volunteer to do this job.

Подробнее | Разместил: Planet KDE | Дата: 28.06.2012 | Прочитано: 490 | Комментарии

Your chance to help: Improving bugzilla for new developers

System & Utilities

The other day I was talking with Fabio, a new Okular developer (a blog post on his awesomeness coming soon), and realized that he had permission to commit to the git repositories but not permission to close bugs in

This disconnect comes from the fact that bugzilla is not tied to your user.

After speaking with the KDE sysadmins we agreed it'd be cool to enable permissions in bugzilla if there is a matching address (it would be cooler to match the accounts, but that's probably a gigantic task)

So we are looking for someone that can write some sql to do this:

1) find the user_id from someone's email address
2) insert an entry into user_group_map for the editbugs group and that user_id
3) insert an entry into user_group_map for the canconfirm group and that user_id

Additionally the code has to be smart enough to
1) print a notice if no bugzilla account was not found for the given email address
2) be written in a way as to not cause more...

Подробнее | Разместил: Planet KDE | Дата: 28.06.2012 | Прочитано: 617 | Комментарии

Calligra 2.4.3 Released

System & Utilities

The Calligra team has released version 2.4.3, the third bugfix release of the Calligra Suite, Calligra Mobile and Calligra Active. This release contains a number of important bug fixes to 2.4.2 and we recommend everybody to update as soon as possible.

Bugfixes in This Release

Here is an overview of the most important fixes are in 2.4.3. There are several others that are not mentioned here:


  • Always show vertical scroll bar to avoid race condition (BUG: 301076)
  • Do not save with an attribue that makes LibreOffice and OpenOffice crash (BUG: 298689 )


  • Fixed import from csv when “Start at Line” value changed (BUG: 302209)
  • Set limit to 255 characters for Text type (VARCHAR) (BUG: 301277 and 301136)
  • Remove limits for Text data type, leave as option (BUG:301277)
  • Fixed data saving when focus policy for one of widgets is NoFocus (BUG: 301109)


  • Read and set the resolution for psd images


  • fix load/save styles of all shapes (title,subtitle,axistitles,footer,etc.)
  • Lines more...

Подробнее | Разместил: Planet KDE | Дата: 28.06.2012 | Прочитано: 572 | Комментарии

kubuntu kde 4.9beta upgrade

System & Utilities
in short: don't do it.

after system reboot kwin immediately crashes (even if i start it manually), keyboard focus is not working, so keyboard input is not possible

another regression i found - battery icon has lost its sharpness and is now unusable. please vote for bug 302646
on the positive side i'd note that plasma-netbook's memory footprint hasn't increased.

Подробнее | Разместил: Planet KDE | Дата: 27.06.2012 | Прочитано: 520 | Комментарии

LibVirt Monitor Plasma Applet

System & Utilities

This semester I attended Advanced Topics of Linux Administration course on my university. To successfully complete the course, one must pass an exam, have a presentation and write an article on a related topic. I had a presentation about libvirt and decided to write an introduction into using libvirt’s API (the article has been published (in English) on Czech Linux portal

As an example, I have written a Plasma Applet in QML (yay, my first QML thingie!) and a Plasma DataEngine that serves data about QEMU/KVM virtual machines running under local libvirtd.

On the applet you can watch state of all virtual machines, you can boot/pause/resume/shutdown and reboot them and configure soft and hard memory limits and amount of virtual CPUs allocated to each machine.

Pictures! more...

Подробнее | Разместил: Planet KDE | Дата: 27.06.2012 | Прочитано: 640 | Комментарии

Hand in Hand

System & Utilities

OBS Logoas you might know, ownCloud uses the Open Build Service (short OBS) to produce and distribute the binary packages for the various distributions we want to support.

The OBS is a great system as it does not only build for various Linuxes but also lets the users download the binary packages utilizing a huge mirroring infrastructure. All for you, all for the good of free software.

And there is even more: OBS offers a nice download page which can either be embedded into a projects webpage or be linked from it. Depending on the settings of the OBS project, for example the number of Linuxes it builds for, the page is adopted automatically. So you never again have to deal with lots of download links to the projects repository downloads. See the ownCloud Client Package download page as an living example.

Now the page had a shortcoming for apt based distributions. I became aware of it as the problem as well as the more...

Подробнее | Разместил: Planet KDE | Дата: 21.06.2012 | Прочитано: 573 | Комментарии

[TORRENT] Snowlinux 2 KDE amd64

System & Utilities

Lars Torben Kremer has announced the release of Snowlinux 2 "KDE" edition, a Debian-based distribution showcasing the KDE 4.4.5 desktop: "The team is proud to announce the release of Snowlinux 2 'Ice' KDE.

Подробнее | Разместил: KDE News | Дата: 21.06.2012 | Прочитано: 639 | Комментарии

New KDE Copy Dialog: First Preview

System & Utilities
I'd like to shed some light on my GSoC project. I'm working (with a help of Björn Balazs) on new cool user friendly dialog for copying/moving files. This is a continuation of my previous project to make errors handling asynchronous from files copying process. You can read about it in my previous posts: first, second.

To make a long story short, now if there is a problem with file(s) you are trying to copy, it will no longer block the copying process. Problematic file is classified and just goes to the coresponding tab, where user can find and resolve the problem.

Take a look (I suggest turning 720p and fullscreen) at first preview:

See it on youtube.
Or download via dropbox: file_transfer_dialog_v3.webm

Keep in mind that it is not yet ready of course ;)

This is not a replacement for widgets in notification area:

Normally, the dialog will be opened only if user interaction is more...

Подробнее | Разместил: Planet KDE | Дата: 21.06.2012 | Прочитано: 665 | Комментарии

RIM is hiring Qt developers

System & Utilities

We're hiring Qt developers in Germany, for those who might not know, BlackBerry 10 is using Qt for our core platform with Cascades for our UI/UX framework.

Подробнее | Разместил: KDE News | Дата: 20.06.2012 | Прочитано: 658 | Комментарии

Last week in Qt development (week 23 2012)

System & Utilities

This post is part of an ongoing series about developments and discussions in Qt.

Some parts of this report are still under discussion, and don’t necessarily reflect the final state of Qt 5. The target audience is people involved in Qt development itself, but without the time to follow everything that happens, and others with a strong interest in Qt, Qt 5, and the community.

This week we cover the use of C++11 by default in Qt where available, deprecation of the QWeakPointer feature of tracking QObjects, updates to the Qt plugin system, and quality requirements for primary Qt platforms.

C++11 by default

Qt now detects C++11 capability of the compiler when being configured, and enables C++11 features if possible. The detection of compiler capability currently works only for clang, g++ and Intel compilers.

C++11 provides many advantages over C++98, and for Qt 5 is the preferred and most optimal configuration. A recent commit to Qt 5 makes use of C++11 to increase source compatibility while porting.

QPointer favored over QWeakPointer

In more...

Подробнее | Разместил: Planet KDE | Дата: 20.06.2012 | Прочитано: 741 | Комментарии


System & Utilities

Deuxième partie de mes conseils sur la rédaction de votre CV. Dans ce billet nous nous attardons sur le cas du jeune diplômé. Comme vous le verrez ce n'est pas le cas le plus simple, et pas forcément pour les raisons que l'on pense...

Jeune diplômé

Votre cas est le moins simple, pas tellement parce que vous n'avez pas d'expérience mais plutôt parce qu'en général vous ne comprenez pas encore ou sont les priorités.
Je vous brosse en quelques mots le portrait robot du CV typique du jeune diplômé que je reçois :
  • Tout un tas d'informations communes (nom, prénom, adresse, etc.) ;
  • Une liste extrêmement longue de technologies maîtrisées ;
  • Une liste d'expériences plus ou moins en rapport avec le poste brigué, mais dans tous les cas restant sur les aspects généralistes des expériences sus-nommés ;
  • Une liste de langues (et dans de rare cas le vrai niveau de maîtrise) ;
  • Une liste d'écoles et autres formations ;
  • Une liste de hobbies.
Quel est le problème ici ? Sans parler de la présentation (dont nous reparlerons plus tard), nous avons ici le profil type du more...

Подробнее | Разместил: Planet KDE | Дата: 14.06.2012 | Прочитано: 603 | Комментарии

rekonq 1.0 Tech Preview

System & Utilities rekonq 1.0 Tech Preview

Подробнее | Разместил: Planet KDE | Дата: 14.06.2012 | Прочитано: 608 | Комментарии

ownCloud feed aggregator – the M part

System & Utilities

Hello KDE/ownCloud fellows!

After one month of GSoCoding (and quantum information research), I am finally back to blogging. Let me be honest from the beginning: there will be no screenshots in this post :( This is because the first part of my project was entirely devoted to the most hidden layer of the aggregator app: the model part, the M of MVC (Model-View-Controller) — the pattern used in the design of ownCloud applications. In this post I would like to explain the details of my implementation and share some of the things I learned during the first weeks of my GSoC.

The most important entities in a feed reader application are collections and items. As you can imagine, a collection is a set of items. The collections are organized in a tree, whose nodes are the folders and whose leaves are the feeds. In my implementation, folders and feeds are objects of the classes OC_News_Folder and OC_News_Feed, respectively. These classes extend the class OC_News_Collection. “Class”, “object”, “extend”? Yes, I more...

Подробнее | Разместил: Planet KDE | Дата: 14.06.2012 | Прочитано: 685 | Комментарии

Vim and Share·Like·Connect, a tale of woe

System & Utilities

A long time ago in a galaxy far away there was a non-KDE application that supported activities. That is, reporting opened documents to the activity manager (KAMD).

That code was essentially left for dead. Mainly due to some missing features and changes in the activity manager’s API. It was the time to play Dr Frankenstein and to pick up the pieces to revive this beast.

The Share·Like·Connect problem

While the normal part (statistics collector) of KAMD can work well with an application only reporting which document was opened (like the previous version of the vim plugin did), SLC needs one more info – the window id.

At the time, there was no way to get a window id out of GUI Vim if you’re under X11. It was introduced in later versions, but might not be present on your system. So, in those cases, there needed to be a different approach of getting the valuable data.

Enter the python scripting and Xlib

Here it gets painful. While writing vim scripts in python is rather pleasant, and my more...

Подробнее | Разместил: Planet KDE | Дата: 13.06.2012 | Прочитано: 775 | Комментарии

Kde SC 4.8.4 Is Now Available for Download

System & Utilities

KDE Software Compilation 4.8.4 incorporates many bugfixes for the following applications: KAlarm, KGpg, KWin, and to the KHTML engine.

Подробнее | Разместил: KDE News | Дата: 09.06.2012 | Прочитано: 648 | Комментарии

openSUSE 12.2 beta 1 screenshots

System & Utilities

Yesterday openSUSE 12.2 beta 1 was officially released. Remember, take a look at the list of most annoying bugs before downloading it ;-) . If you find a bug, please report it. The final version is scheduled for mid-July.

As you can see, green is quite present on openSUSE 12.2 beta 1 :-)
opensuse122beta1-image1 opensuse122beta1-image2 opensuse122beta1-image3 opensuse122beta1-image4 openSUSE122beta1-image5 openSUSE122beta1-image6 opensuse122beta1-image7 openSUSE122beta1-image8 openSUSE122beta1-image9 more...

Подробнее | Разместил: Planet KDE | Дата: 07.06.2012 | Прочитано: 670 | Комментарии

digiKam Software Collection 2.6.0 is out...

System & Utilities


Dear all digiKam fans and users!

digiKam team is proud to announce digiKam Software Collection 2.6.0.

read more

Подробнее | Разместил: Planet KDE | Дата: 07.06.2012 | Прочитано: 697 | Комментарии

The black planet

System & Utilities

When discussing about which format we should use for vector tiles we had a look to another GSoC project which is being done in OpenStreetMap to create a data tile server.

This project is being developed by Michael Daines and with Darafei Praliaskouski assigned as his mentor. I got in touch with them to ask what the data tile server and its format would look like to see if we could make some first tests with it. They are going to create a JSON tile server with similar tiles as the ones exported from Xappy.js. This JSON tiles, have a schema very similar to the OSM XML tiles, separating data into nodes, ways and relations.


\"version\": 0.6,
\"generator\": \"xappy.js\",
\"xapi\": {
\"planetDate\": 201106161601,
\"copyright\": \"XXX\"
\"elements\": [


\"type\": \"node\",
\"id\": 3596186,
\"lat\": 53.4633699598014,
\"lon\": -2.22667910006381,
\"timestamp\": \"2007-06-21T17:10:58+01:00\",
\"version\": 2,
\"changeset\": 2213,
\"tags\": [ more...

Подробнее | Разместил: Planet KDE | Дата: 07.06.2012 | Прочитано: 724 | Комментарии

An ARMs race, with a core i7 in there too for relativity

System & Utilities

After doing some power benchmarking recently (1.2ghz kirkwood with gb net up = 5watts) I decided to work out how fast these arms can do useful work^TM. In the running is a Synology ds212j, DreamPlug running the Freedombox, Nokia n9 mobile phone, and an Intel 2600k just for working out where those relative numbers sit when compared to a desktop machine.

The above image shows the cipher performance of "openssl speed" across many machines. The 2600k is only single threaded, so could be many times faster in real world use by taking advantage of the cores. One interesting point right off the bat is that the 1.2Ghz kirkwood in the synology NAS is bested by the 1.0ghz CPU of the Nokia n9. Arms is not arms.

Removing the overload from more...

Подробнее | Разместил: Planet KDE | Дата: 07.06.2012 | Прочитано: 622 | Комментарии

Broken Power Supply Unit

System & Utilities

My laptop is now almost four years old and the list of broken components is long:

  • battery
  • microphone
  • CD/DVD drive
  • external VGA
  • Bluetooth
  • display backlight dimming
  • LAN connector (slack joint)

But so far, no grave failure occurred, means, nothing I could not circumvent. Until today. When I woke up, I was not able to power up my laptop.
In short: it was the power supply and it is fixed. But I want to explain how I fixed it because it seems to be a common problem with laptop power supply units. This is not meant to be a tutorial though, only a story of success. :D

The Symptoms

So, the laptop does not power-up. No LED blink, no fan sound, nothing. So I take a closer look at the power supply unit. But what’s that? There is a vague beeping sound coming from it. Not a mechanical one like one can sometimes hear from old television sets but an electronically generated one. I recorded it using a sensitive microphone.

Download: power_adapter_beep.ogg more...

Подробнее | Разместил: Planet KDE | Дата: 07.06.2012 | Прочитано: 639 | Комментарии

Testing KDE 4.9 Beta1 (version 4.8.80)

System & Utilities

As you may know, we recently set up a Quality and Testing team within KDE. We prepared some wiki pages ( and now that the Beta 1 is out, several people already joined this Testing phase.

How can you get involved?
Install the Beta 1 from your distribution, most known distributions provide packages for it.
After that, you can choose two ways of testing:
- either use the release as you would normally and look for regressions, bugs, crashes,... Please report them to (try to search if the bug was already reported, for a quicker result you can ask on IRC, freenode, in #kde-bugs), do not forget to set up the version in your bug report as well as the precise stps to reproduce the bug. If it is a regression, explain how it was before.
- or choose a specific component to test in a more thorough way. We focus in priority on new additions to this release, on changed components and on new features. You can therefore test applets ( more...

Подробнее | Разместил: Planet KDE | Дата: 07.06.2012 | Прочитано: 606 | Комментарии
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