Language Selection

English French German Italian Portuguese Spanish


Leftovers: KDE

Filed under
  • open365, let's declare war at Google and Microsoft

    Open365 is a public and/or private cloud designed to compete with the likes of Google Drive or Office365 by leveraging all the best free software out there.

    The service is designed to scale horizontally as well as to be resilient to components crashing or going crazy. In order to achieve this we have implemented a microservice architecure that communicate using a bus (rabbitmq) plus some other tricks so we can scale using commodity hardware horizontally. Nothing fancy, nothing revolutionary but it had to be done Smile

    Finally, we’ve integrated under the same system very well know software solutions for File sinchronization, PIM (Email, calendar,contacts…) and office.



    For the last two, we re using SPICE and our HTML5/Javascript client to run those applications in the server and send only the interface to the Web browser in a really efficient way.

  • clazy: Suppressing warnings
  • Summer Is Coming

    First, we managed to kill of for good. It used to run ChiliProject - which has been discontinued and no longer provides security updates - and used to be a constant source of headaches for the syasadmins, with the seemingly endless HTTP 500 ISEs we'd generate. After it went down in the middle of CKI - and resulted in a few embarrassing moments in the middle of talks - we decided it had to go.

Leftovers: KDE

Filed under
  • Reordering a Qt Quick ListView via drag'n'drop

    It is common in user interfaces to provide the user with a list of elements which can be reordered by dragging them around. Displaying a list of elements with Qt Quick is easy, thanks to the ListView component. Giving the user the ability to reorder them is less straightforward. This 3 article series presents one approach to implementing this.

  • A note to those who test kde apps building them from sources
  • Google Summer of Code,2016

    So, finally, the wait is over. The result of GSoC selections is out and Voila! my proposal has been accepted and is now a GSoC project. I would like to thank KDE community, my mentor, and co-mentors for their support and giving me an opportunity to be a part of this programme. I will be working on the project LabPlot (KDEdu) which is a KDE-application for interactive graphing and analysis of scientific data. LabPlot provides an easy way to create, manage and edit plots.

Leftovers: KDE

Filed under
  • A Usability Guy’s Journey to Creating his First KDE Tool – Part 1: Baby Steps

    These two may sound completely unrelated at first, but they both were key in sending me down this path. This article will tell the story behind 1, which is about my very first code commit to KDE. I will go into quite some detail because I feel that my journey may provide some insights for KDE.

    This story started on April 6th. I was discussing with Aleix Pol about actual vs. perceived performance in Plasma and other KDE software. One thing we agreed on was that animation speed has a big impact on perceived performance. During that discussion, we found out that the setting for the animation speed is almost impossible to find in System Settings, because it sits in a module where you would not expect it to be (Display and Monitor > Compositor), and searching for “animation speed” points you to the wrong module (this was due to an oversight when the “Desktop Effects” module was split in two and the search keywords were not adapted). The “it sits in an unexpected module” problem is about to be fixed by moving it into the “Workspace behavior” module, but first I wanted the actual bug with the search pointing to the wrong module to be fixed.

    At first, as usual, I wrote a bug report about it. Then, Aleix, being a cunning little Spaniard (*scnr*, I know you’re Catalonian), said these fateful words: “You could fix this one yourself!”. Now the cunning part was that he knew I could not defend myself by saying “But I don’t know C++ …” because the search keywords are defined in .desktop files, easily read- and writable for mere mortals like me. So, without any good argument why I couldn’t, I set out to fix it myself.

    The first obstacle on my journey was that even after years of being a KDE contributor, I still did not have a KDE developer account. The reason is simple: My contributions usually come in the form of text and mockups, not code. I describe my ideas in wiki pages, emails, forum posts, chats, review requests, bug reports, blog posts, …, but not in repositories. For this simple patch, I could have just put it up on Reviewboard or Phabricator and have someone else commit it, but if I was going to contribute code, I wanted to do it properly™.

  • It has happened!

    I have been selected for the Google Summer of Code!

    For the better part of the summer vacation, I will now be committing myself to write code for KDE to implement my project idea of implementing a virtual folder in Dolphin to make it easier to select files.

  • GSoC project accepted, now what?

Leftovers: KDE

Filed under
  • KBibTeX 0.6.1-alpha1 (

    I just made a release of KBibTeX 0.6.1-alpha1 (, which is the first preview release of the upcoming bugfix release in the 0.6 series. Please note that the 0.6 series is still based on KDE 4.

  • KDiff3 for KDE Frameworks 5 becomes usable

    After recently starting to port KDiff3 to KDE Frameworks 5, I made a few commits today making the software actually usable.

  • Grantlee v5.1.0 (Codename Außen hart und innen ganz weich) now available

    The Grantlee community is pleased to announce the release of Grantlee version 5.1 (Mirror). Grantlee contains an implementation of the Django template system in Qt.

  • Minuet 0.1 released!

    I'm happy to announce that the very first release of Minuet is available today as part of KDE Applications 16.04 \o/.

  • News about kdepim: Allow to build standalone each applications
  • New Krita 3.0 Alpha/Development Windows Builds
  • Kdenlive: Café, release and development

    In a few days, we are going to celebrate the release of Kdenlive 16.04.0.
    If you are interested in the project, you are welcome to join us in the next Kdenlive café, a monthly IRC meeting for users and developers.

  • KDE Neon out now – An Interview with Jonathan Riddell

    Is KDE’s Neon a new Linux distribution? Is it a showcase? Is it a test bed? Neon (“tech preview”) User Edition launches today and we got Jonathan Riddell, Neon’s front runner, to explain what all the fuss is about.

  • kver’s definition of anarchy
  • Travis-CI builds of KDE projects on Archlinux chroot

    How many of you knew that KDE has a github mirror? The mirror is useful for github users/fans (who can for example star their favorite KDE projects), but can also be useful to KDE developers who don’t care about github. I was on of them, until today. Github features an excellent integration with Travis-CI. This means that you (as github user) get for free a Continuous Integration system already up and running, waiting for your commits.

  • KDE 5_16.04 for Slackware-current

    You may already have tried it through the PLASMA5 variant of the Slackware Live Edition which I uploaded yesterday, and here is the announcement of the addition of KDE 5_16.04 to my ‘ktown’ repository – the April release of the combined KDE Frameworks 5.21.0, Plasma 5.6.3 and Applications 16.04.0.

  • KDE-FreeBSD catching up

    After a long struggle with digiKam (mostly because of the libmediawiki plugin), a brief struggle with KDevelop (it is well-behaved), and a careful struggle with CMake (because lots of other ports depend on it), official ports have been updated (by Tobias Berner and Raphael Kubo da Costa) with the state-of-the-art for KDE4 from the unofficial area51 repository.

KDE Announces the Release of KDE Applications 16.04 for KDE Plasma 5 Desktop

Filed under

Today, April 20, 2016, KDE has had the great pleasure of announcing the release of the final KDE Applications 16.04 software collection for the KDE Plasma 5 desktop environment.

Read more

KDE neon User Edition Tech Preview

Filed under

It’s a build of KDE neon using released software, our clever CI system watches for new releases such as Plasma 5.6.3 and packages them pronto. If you want to use the latest released software, this is the way to do it.

Read more

KDE Plasma 5.6.3 Desktop Environment Released Patches a KWin Crash, Fixes Bugs

Filed under

Today, April 19, 2016, KDE announced the immediate availability of the third maintenance release in the stable KDE Plasma 5.6 series of the popular desktop environment used in numerous GNU/Linux operating systems by default.

Read more

fresh breeze for Ubuntu

Filed under

1,5 years ago the VDG start with an icon theme for LibreOffice to guaranty an consistent look and feel for Plasma users. Now this new icon theme Breeze was used by default in the KDE Linux distributions and on Mac OS X.

Breeze is a monochrome icon theme and fits well into modern Desktops like Plasma and OS X but the second reason is that the Breeze icon set is a complete icon set. We can support 100 % (and I mean 100 %) of the needed LibreOffice icons. In addition Breeze supports dark colour themes AND 32 px icon size. This is unique because only the default icon set is that much feature complete.

Read more

Leftovers: KDE

Filed under
  • [Utilizing Vulkan Within Qt]
  • The last weekend on Earth

    In the last two months, tech developers, helped by students from India in order to the Google Summer of Code, worked hard, together with the editing team, on new features and fuctions that we wanted to implement in the site. So, tech developers decided to release WikiToLearn 0.7 on saturday April 09. But something went wrong, and what would have to be an ordinary saturday of releasing became a hellish saturday.

  • Audio Volume improvements in Plasma 5.7

    Plasma 5.4 introduced plasma-pa (new audio volume applet and KCM) to replace KMix, however it was missing few important features in the initial release. Unfortunately, there was no progress after that.

  • Vote Loony to Add K to the Welsh Language
  • Horde of Cuteness fundraiser
  • Cross-compiling Krita using MXE

    So, using MXE, I built Qt and most dependencies. Still missing are Vc, OpenColorIO, GSL, Poppler-qt5 and openjpeg. I also needed to remove some of the hacks we did to make Krita compile with MSVC: we had added a couple of dummy header files to provide things like nothl and friends (these days superseded by QtEndian). A 3rd-party library we embed, xcftools, had its own equivalent of that stuff. But apart from that...

  • Interview with Esfenodon

    I’m always searching for the way to use as much open source software as possible at University. Maybe it was as simple as searching google for it. Krita software, hmmm, interesting, let’s give it a try. Maybe the Krita name was familiar to me because some time ago I read about a collection of open source tools for audiovisual creativity.

  • How do you use Grantlee?

    It is also used in the Cutelyst web framework for generating html, templated emails and any other use-cases users of that framework have.

    There is also rather advanced Grantlee integration available in KDevelop for new class generation, using the same principles I blogged about some years ago.

Leftovers: KDE

Filed under
  • KDE Neon Project Rebased on Ubuntu 16.04 LTS (Xenial Xerus), Upgrade Now

    Ex-Kubuntu maintainer Jonathan Riddell has announced the upgrade of the KDE Neon base packages from Ubuntu 15.10 (Wily Werewolf) to the upcoming Ubuntu 16.04 LTS (Xenial Xerus) branch.

    The developer introduced the KDE Neon project to the Linux community at the end of January, during the FOSDEM (Free and Open Source Software Developers' European Meeting) 2016 event, which was welcomed in particular by those who love having the latest KDE technologies on top of an Ubuntu Linux base.

  • Qt 5.7 Beta Is In Sight

    Qt 5.7 continues moving along and due to the concurrent release work with the much-delayed Qt 5.6 that finally shipped in March, the Qt 5.7 beta is already imminent.

    The Qt Company today uploaded Qt 5.7 beta packages for Windows, Linux, Mac, and then the source packages. These Qt 5.7.0 beta packages will be promoted to being the official beta in a few days time if no serious bugs are discovered by early testers.

  • Kolab Systems AG and Collabora's CloudSuite

    The chemistry created by the Kolab Systems-Collabora Productivity partnership enabled CloudSuite, the first 100% open-source, enterprise-grade cloud office suite. Kolab Systems' contribution is its Kolab open-source groupware and collaboration framework; Collabora Productivity is the architect behind LibreOffice Online, the cloud-based office productivity suite. The integration of CloudSuite into Kolab allows users to work on documents simultaneously using a full-featured on-line office suite.

Syndicate content

More in Tux Machines

Linux 4.8.4

I'm announcing the release of the 4.8.4 kernel. And yeah, sorry about the quicker releases, I'll be away tomorrow and as they seem to have passed all of the normal testing, I figured it would be better to get them out earlier instead of later. And I like releasing stuff on this date every year... All users of the 4.8 kernel series must upgrade. The updated 4.8.y git tree can be found at: git:// linux-4.8.y and can be browsed at the normal git web browser: Read more Also: Linux 4.7.10 Linux 4.4.27

New Releases: Budgie, Solus, SalentOS, and Slackel

  • Open-Source Budgie Desktop Sees New Release
    The pet parakeet of the Linux world, Budgie has a new release available for download. in this post we lookout what's new and tell you how you can get it.
  • Solus Linux Making Performance Gains With Its BLAS Configuration
    - Those making use of the promising Solus Linux distribution will soon find their BLAS-based workloads are faster. Solus developer Peter O'Connor tweeted this week that he's found some issues with the BLAS linking on the distribution and he's made fixes for Solus. He also mentioned that he uncovered these BLAS issues by using our Phoronix Test Suite benchmarking software.
  • SalentOS “Luppìu” 1.0 released!
    With great pleasure the team announces the release of SalentOS “Luppìu” 1.0.
  • Slackel "Live kde" 4.14.21
    This release is available in both 32-bit and 64-bit architectures, while the 64-bit iso supports booting on UEFI systems. The 64-bit iso images support booting on UEFI systems. The 32-bit iso images support both i686 PAE SMP and i486, non-PAE capable systems. Iso images are isohybrid.

Security News

  • Free tool protects PCs from master boot record attacks [Ed: UEFI has repeatedly been found to be both a detriment to security and enabler of Microsoft lock-in]
    Cisco's Talos team has developed an open-source tool that can protect the master boot record of Windows computers from modification by ransomware and other malicious attacks. The tool, called MBRFilter, functions as a signed system driver and puts the disk's sector 0 into a read-only state. It is available for both 32-bit and 64-bit Windows versions and its source code has been published on GitHub. The master boot record (MBR) consists of executable code that's stored in the first sector (sector 0) of a hard disk drive and launches the operating system's boot loader. The MBR also contains information about the disk's partitions and their file systems. Since the MBR code is executed before the OS itself, it can be abused by malware programs to increase their persistence and gain a head start before antivirus programs. Malware programs that infect the MBR to hide from antivirus programs have historically been known as bootkits -- boot-level rootkits. Microsoft attempted to solve the bootkit problem by implementing cryptographic verification of the bootloader in Windows 8 and later. This feature is known as Secure Boot and is based on the Unified Extensible Firmware Interface (UEFI) -- the modern BIOS.
  • DDOS Attack On Internet Infrastructure
    I hope somebody's paying attention. There's been another big DDOS attack, this time against the infrastructure of the Internet. It began at 7:10 a.m. EDT today against Dyn, a major DNS host, and was brought under control at 9:36 a.m. According to Gizmodo, which was the first to report the story, at least 40 sites were made unreachable to users on the US East Coast. Many of the sites affected are among the most trafficed on the web, and included CNN, Twitter, PayPal, Pinterest and Reddit to name a few. The developer community was also touched, as GitHub was also made unreachable. This event comes on the heels of a record breaking 620 Gbps DDOS attack about a month ago that brought down security expert Brian Krebs' website, KrebsonSecurity. In that attack, Krebs determined the attack had been launched by botnets that primarily utilized compromised IoT devices, and was seen by some as ushering in a new era of Internet security woes.
  • This Is Why Half the Internet Shut Down Today [Update: It’s Getting Worse]
    Twitter, Spotify and Reddit, and a huge swath of other websites were down or screwed up this morning. This was happening as hackers unleashed a large distributed denial of service (DDoS) attack on the servers of Dyn, a major DNS host. It’s probably safe to assume that the two situations are related.
  • Major DNS provider Dyn hit with DDoS attack
    Attacks against DNS provider Dyn continued into Friday afternoon. Shortly before noon, the company said it began "monitoring and mitigating a DDoS attack" against its Dyn Managed DNS infrastructure. The attack may also have impacted Managed DNS advanced service "with possible delays in monitoring."
  • What We Know About Friday’s Massive East Coast Internet Outage
    Friday morning is prime time for some casual news reading, tweeting, and general Internet browsing, but you may have had some trouble accessing your usual sites and services this morning and throughout the day, from Spotify and Reddit to the New York Times and even good ol’ For that, you can thank a distributed denial of service attack (DDoS) that took down a big chunk of the Internet for most of the Eastern seaboard. This morning’s attack started around 7 am ET and was aimed at Dyn, an Internet infrastructure company headquartered in New Hampshire. That first bout was resolved after about two hours; a second attack began just before noon. Dyn reported a third wave of attacks a little after 4 pm ET. In all cases, traffic to Dyn’s Internet directory servers throughout the US—primarily on the East Coast but later on the opposite end of the country as well—was stopped by a flood of malicious requests from tens of millions of IP addresses disrupting the system. Late in the day, Dyn described the events as a “very sophisticated and complex attack.” Still ongoing, the situation is a definite reminder of the fragility of the web, and the power of the forces that aim to disrupt it.
  • Either IoT will be secure or the internet will be crippled forever
    First things first a disclaimer. I neither like nor trust the National Security Agency (NSA). I believe them to be mainly engaged in economic spying for the corporate American empire. Glenn Greenwald has clearly proven that in his book No Place to Hide. At the NSA, profit and power come first and I have no fucking clue as to how high they prioritize national security. Having said that, the NSA should hack the Internet of (insecure) Things (IoT) to death. I know Homeland Security and the FBI are investigating where the DDoS of doomsday proportions is coming from and the commentariat is already screaming RUSSIA! But it is really no secret what is enabling this clusterfuck. It’s the Mirai botnet. If you buy a “smart camera” from the Chinese company Hangzhou XiongMai Technologies and do not change the default password, it will be part of a botnet five minutes after you connect it to the internet. We were promised a future where we would have flying cars but we’re living in a future where camera’s, light-bulbs, doorbells and fridges can get you in serious trouble because your home appliances are breaking the law.
  • IoT at the Network Edge
    Fog computing, also known as fog networking, is a decentralized computing infrastructure. Computing resources and application services are distributed in logical, efficient places at any points along the connection from the data source (endpoint) to the cloud. The concept is to process data locally and then use the network for communicating with other resources for further processing and analysis. Data could be sent to a data center or a cloud service. A worthwhile reference published by Cisco is the white paper, "Fog Computing and the Internet of Things: Extend the Cloud to Where the Things Are."
  • Canonical now offers live kernel patching for Ubuntu 16.04 LTS users
    Canonical has announced its ‘Livepatch Service’ which any user can enable on their current installations to eliminate the need for rebooting their machine after installing an update for the Linux kernel. With the release of Linux 4.0, users have been able to update their kernel packages without rebooting, however, Ubuntu will be the first distribution to offer this feature for free.
  • ​The Dirty Cow Linux bug: A silly name for a serious problem
    Dirty Cow is a silly name, but it's a serious Linux kernel problem. According to the Red Hat bug report, "a race condition was found in the way the Linux kernel's memory subsystem handled the copy-on-write (COW) breakage of private read-only memory mappings. An unprivileged local user could use this flaw to gain write access to otherwise read-only memory mappings and thus increase their privileges on the system."
  • Ancient Privilege Escalation Bug Haunts Linux
  • October 21, 2016 Is Dirty COW a serious concern for Linux?
  • There is a Dirty Cow in Linux
  • Red Hat Discovers Dirty COW Archaic Linux Kernel Flaw Exploited In The Wild
  • Linux kernel bug being exploited in the wild
  • Update Linux now: Critical privilege escalation security flaw gives hackers full root access
  • Linux kernel bug: DirtyCOW “easyroot” hole and what you need to know
  • 'Most serious' Linux privilege-escalation bug ever discovered
  • New 'Dirty Cow' vulnerability threatens Linux systems
  • Serious Dirty Cow Linux Vulnerability Under Attack
  • Easy-to-exploit rooting flaw puts Linux PCs at risk
  • Linux just patched a vulnerability it's had for 9 years
  • Dirty COW Linux vulnerability has existed for nine years
  • 'Dirty Cow' Linux Vulnerability Found
  • 'Dirty Cow' Linux Vulnerability Found After Nine Years
  • FakeFile Trojan Opens Backdoors on Linux Computers, Except openSUSE
    Malware authors are taking aim at Linux computers, more precisely desktops and not servers, with a new trojan named FakeFile, currently distributed in live attacks. Russian antivirus vendor Dr.Web discovered this new trojan in October. The company's malware analysts say the trojan is spread in the form of an archived PDF, Microsoft Office, or OpenOffice file.

today's howtos