Category Archives: Slackware Linux

Eclipse Luna 4.4 – Code Assist can’t render HTML on KDE4 Slackware Linux 14.1

Eclipse SDK
Version: Luna (4.4)
Build id: I20140606-1215
PHP Development Tools (PDT)

After upgrading my workstation to Slackware 14.1 with KDE 4.10.5 as my default desktop, I was left with some issues regrading my new Eclipse Luna installation. Notably the tooltip was unreadable with its black background color, and much worse, the code assist would not render any HTML whatsoever.

Eclipse 4.4 - Code Assist unable to render HTML
Eclipse 4.4 – Code Assist unable to render HTML

Fixing the dark tooltip background:

KDE4 Application Apperance
KDE4 – Application Apperance

After searching through most of Eclipse’s menus and settings, it became evident that the easiest solution would be to change the tooltip background color by using KDE’s application appearance setting. Navigate to “System Settings” => “Application Apperance” => “Colors” => “Colors” => “Color set: Tooltip” and pick a lighter background. There might be a more sophisticated way of doing this on a per-app basis but it evaded me.

Fixing  HTML rendering for the Code Assist:

Eclipse uses SWT which is an open source widget toolkit for Java designed to provide efficient, portable access to the user-interface facilities of the operating systems on which it is implemented. Further, the SWT Browser widget is used to display HTML documents. It is designed to provide a basic and portable API sufficient for essential HTML browsing and rendering on the platforms on which it is implemented. On a Linux system, this means GTK.

Since I used the SlackBuilds repository to install Eclipse with all dependencies I believed I had everything covered. However, after reading this information at the aforementioned SWT FAQ, I learned that Eclipse Luna (4.4) uses GTK 3 by default. Thus I needed to configure WebKitGTK+ with GTK3. The simple solution is to pick up webkitgtk3 from the SlackBuilds repository and install it alongside or instead of  webkitgtk.

Eclipse 4.4 with webkitgtk3 rendering HTML
Eclipse 4.4 with webkitgtk3 seen rendering HTML using an internal browser

As a simple PDT user with limited understanding of the inner workings of Eclipse, I got to admit I might start looking for a more simplistic IDE.  At least I’ll be hesitant to upgrade to any new major release.

VMware Player – How to install VMware Tools on a Slackware Linux guest

I usually prefer VirtualBox for my non-commercial virtualization needs, but since I already had VMware Player 6.0.2 installed on a Windows 8.1 64-bit host I decided go with it for my Slackware Linux 64-bit guest.

Installing VMware Tools with VMware Player
The VMware Tools installer failing to load the CD image.

To get any kind of performance and functionality on the guest system, it’s necessary to install VMware Tools. This should in theory be as easy as navigating to “Manage” => “Install VMware Tools…” from the Player menu, but in my case this got me nowhere. The expected result was having the guest operating system mounting the VMware Tools installation CD, but that just didn’t work.
After reading through the vmware.log the problem became pretty obvious.

2014-06-22T17:30:43.945+02:00| vmx| I120: TOOLS INSTALL entering BEGINNING state.
2014-06-22T17:30:43.945+02:00| vmx| I120: TOOLS INSTALL 'C:\Program Files (x86)\VMware\VMware Player\linux.iso' not present or not readable
2014-06-22T17:30:43.945+02:00| vmx| I120: TOOLS INSTALL Initialization failed.
2014-06-22T17:30:43.945+02:00| vmx| I120: TOOLS INSTALL entering IDLE state. 

For some reason my VMware Player installation was missing the linux.iso which contains the actual VMware Tools. I have no idea if this is a bug or just a calculated oversight on VMware’s behalf, but either way it’s rather annoying.

After some digging around I found the packages I needed at Be aware that the packages are organized by Player version and build number, so make sure you pick whatever matches your installation.

As of June 22, 2014, 6.0.2/1744117 is the latest version of VMware Tools:

Download the file named tools-linux-9.6.2.exe.tar and extract the archive. Subsequently run the tools-linux-9.6.2.exe file. This will create the linux.iso containing the VMware tools in your VMware Player installation folder.

With the linux.iso image in place, the “Install VMware Tools” procedure will now work as expected by auto mounting the CD image.

The following commands are for installing VMware Tools on Slackware Linux 14.1 64-bit. The installation require a working build environment, which you’ll have with a full Slackware installation.

cd /media/VMware\ Tools/
tar zxf VMwareTools-9.6.2-1688356.tar.gz -C /tmp/

# change to root, create the expected pam directory and execute the installer
su -
mkdir /etc/pam.d
cd /tmp/vmware-tools-distrib

With a Slackware guest you’ll do fine with the default options as suggested by the installer. When the installation completes, log out and restart X and you’re done.

The screenshots below show Slackware booting with VMware tools installed, and using the unity mode which allow guest applications on the host system desktop.

Slackware 14.1 review – Into Slackness

I did a review of Slackware Linux 14.0 a year ago and I was unsure as to whether I should make another one or not. There is rarely much change from a user point of view between different Slackware releases, and I expected to end up ripping off most of my previous review. Speaking of which, for a more well rounded assessment of Slackware Linux, please check out the Slackware 14.0 review.

Anyhow, since I don’t expect to see an abundance of Slackware 14.1 reviews around the interwebs, I have chosen to give it another go. In an effort to add something new to this review I’ll revisit an old nemesis, namely the K Desktop Environment (KDE). This review is based on Slackware Linux 14.1 RC.2 towards the final 14.1 release.

Slackware Linux 14.1 x86_64 has been installed and reviewed on the following system:

Intel Core i7 2630QM
Geforce GTX 460M 1.5GB GDDR5 VRAM
HD 500GB 7200rpm
Display 17.3″ Full HD (1920×1080)

What’s new with Slackware Linux 14.1

Slackware 14.1 brings a collection of fresh desktop environments including KDE 4.10.5, Xfce 4.10.1 and Fluxbox 1.3.5. The Linux kernel version is 3.10.17 from the 3.10.x branch, which will be getting long-term support. As stated in the release notes, the biggest change with the 14.1 release is probably the added support for systems running UEFI firmware (x86_64 release only). Please refer to the official release notes for details.

Me, a slacker?

You might have heard that Slackware is predominantly a distribution for developers and IT-professionals due to its alleged complexity and lack of graphical configuration tools. An opinion often attributed to people who have never used Slackware, as you would be hard pressed to find a less complex and effortless operating system to maintain. There is really only one requirement to be a Slacker, and that is the willingness to spend the needed hours to learn the basics.


Slackware 14.1 installation
Slackware 14.1 installation

Installation is done with a user friendly ncurses based installer. The visuals might look a bit intimidating to new users but it’s actually very simple to understand and follow. In comparison, I’ve used graphical installers where I had to google for instructions as the absence of logic was complete.

Package management

pkgtool - software package maintenance tool
Slackware package tool

Pkgtool is a menu-driven package maintenance tool provided with the Slackware Linux distribution. It allows the user to install, remove, or view software packages through an interactive system. Pkgtool can also be used to re-run the menu-driven scripts normally executed at the end of a Slackware installation.
Source: man pkgtool

Slackpkg is a tool for those who want to easily install or upgrade packages via the network. With slackpkg, you can have a minimal installation of Slackware Linux and install/upgrade only those packages you need the most.
Source: man slackpkg

Desktop usage

KDE 4.10.5 – An unexpected journey

In the past, my experience with KDE 4.x has been one of disappointment. Frequent crashes, an indexing service that terrorized all available system resources, and an overall sluggish performance made me favor the always-reliable Xfce desktop.

KDE PIM suite
The KDE 4.10.5 PIM suite

My initial run of KDE 4.10.5 made me realize that this project is getting back on track as far as I’m concerned. There was an unfamiliar eerie sound of silence upon loading the desktop environment. No fans hitting the roof, nor cpu’s heating up to critical levels burning my lap. Everything was running so smoothly that I had to check if Akonadi was actually running. Furthermore, the Nepomuk indexing service seems to be able to do its file indexing while the user is idle, thus no longer competing for the same resources at the same time. I was also quite impressed with how well Nepomuk integrates and works with the Dolphin file manager. My only issue with Nepomuk is the lack of support for everyone’s favourite proprietary formats as this creates a need to install another full text indexing engine.

KDE 4.10.5 Software compilation
KDE 4.10.5 Software bonanza

Still, I’m almost tempted to get onboard with the whole idea of a semantic desktop which seems to a key factor in the long term vision of the KDE developers. A stable Akonadi framework is essential for the KDE desktop experience as multiple applications depend on it. For instance, you cannot run KMail, KAddressBook or KOrganizer without having Akonadi enabled.

In the past I’ve been advised to just disable all the semantic desktop services, but I don’t really see the point of running KDE without them. In my opinion you should either use the desktop as the developers intended, or you should find yourself a better alternative.
My biggest concern with embracing this framework though is the overall complexity. When something does break, you might have a hard time identifying the cause of the problem.

KDE 4.10.5 Zombie agents
KDE 4.10.5 – The walking dead… agents

By a cruel trick of faith, Akonadi did crash on me after three weeks of smooth sailing. In my case it was due to a mysqlcheck zombie process (owned by the Akonadiserver) which prevented Akonadi from starting up. I thought initially that it might be caused due to a corrupt table that mysqlcheck could not restore but alas, that was not the case. The error log pointed at the Aria database engine as the root of the problem, but I was unable to find the cause after further investigating.

I could easily enough kill the akonadi_control and akonadiserver processes respectively to get Akonadi going again, but the same issue returned on every boot. After getting none the wiser from reading through similar issues on the KDE forums, I decided to surrender and delete my Akonadi folder to start with a blank sheet. Since then, everything has worked flawlessly but it makes me a bit hesitant to commit to KDE at this point.

Still, if you’ve been using Slackware and avoided KDE since the 3.x series, this might be the right time to give KDE 4.x another go. Even though I experienced some unfortunate errors, I will definitely spend more time with KDE, and that is something I would never have considered a couple of years ago.

Multimedia support

Slackware14.1 - Google Crome
Adobe: Get Chrome or forget Flash. Channel: malufenix

Slackware supports most media formats out of the box with few exceptions. However, if you want to enjoy your dvd collection you will have to install some additional codecs. You may pick up what you need in that regard at the site.
When it comes to Adobe Flash, your best option is to install Google Chrome from the official extra repository, which has the Adobe Flash Player integrated.


Look and feel

There is no theming or other distro specific customization with Slackware Linux. Everything is as close to the vanilla sources as possible. Below are screenshots of the different desktop environments included.

Parting notes

I’ll keep this short as my word count warning is flashing red. Slackware Linux 14.1 is what the constant Slacker expects: stable, reliable and true to its KISS policy.
Slackware might not be the most forgiving distribution for the Linux novice, but unless your goal is to remain a novice I can’t find any reason as to why you shouldn’t give it a spin.

Once upon a time Slackware Linux was the distribution everybody was using. Those days are long gone but the fact that Slackware is still plodding on speaks volumes of the project’s durability and quality.

A big thanks goes to Patrick Volkerding and the Slackware development team for keeping this project alive.

Slackware Links

Slackware Linux
Support Slackware
The Slackware Documentation Project
The Revised Slackware Book Project
The Slackware community
A history of Slackware development with Eric Hameleers