Monthly Archives: October 2013

Setting up schroot for Python multiprocessing

Posted by on October 29, 2013 No comments

When using Arch Linux, its sometimes required to run something in a older/stable releaes of a Linux distribution. For this purpose I have a Ubuntu 12.04 LTS installation in a schroot environment. However, using Bitbake (a heavily multithreded and Python based build utility) The build aborted with the error:

  File "/usr/lib/python2.7/multiprocessing/queues.py", line 63, in __init__
    self._rlock = Lock()
  File "/usr/lib/python2.7/multiprocessing/synchronize.py", line 147, in __init__
    SemLock.__init__(self, SEMAPHORE, 1, 1)
OSError: [Errno 13] Permission denied

Read more »

Graphical boot splash screen with Nvidia binary drivers

Posted by on October 20, 2013 No comments

Recently I had a hard time to bring graphical boot splash screen (Plymouth) to work on a Ubuntu 13.10 Saucy Salamander installation. I use the Nvidia binary driver and activated uvesafb therefor (see this blog post how to do this). However, it didn’t work. In the end two pieces were missing: Read more »

Arch Linux: Gnome 3.10 on Wayland

Posted by on October 8, 2013 No comments
Gnome 3.10 on Wayland

Gnome 3.10 on Wayland

Gnome 3.10 has initial Wayland support and hit the Arch Linux repositories lately, time to give it a try! The gnome packages are available with Wayland support, namely gnome-shell (which includes the gnome-shell-wayland binary) and mutter-wayland.

But I soon realized, that running Gnome on Wayland using Arch is not possible without some work: Firing up mutter-launch with the gnome-shell-wayland, lead to this error:

$ CLUTTER_BACKEND=wayland mutter-launch --verbose -- gnome-shell-wayland --wayland
...
(gnome-shell-wayland:18781): mutter-ERROR **: Spurious exit of X Wayland server

Gnome (or more specific, mutter, the Gnome window manager/compositor) needs a working XWayland version. XWayland is a X-Server running as a Wayland client. Its only used for non Wayland compatible clients, but is a mandatory requirement for mutter right now. The X-Server in the Arch repositories does not support this mode, hence another package is necessary. Read more »