Ubuntu
cairo package

  1. Bug #1080674
  2. Comment #48

Comment 48 for bug 1080674

Revision history for this message
Peter Lieven (plieven) wrote :

Looking further it seems that the root cause is that the CIRRUS driver cannot be used in 12.04.3 because of this

[ 579.647] (EE) cirrus: The PCI device 0xb8 at 00@00:02:0 has a kernel module claiming it.
[ 579.647] (EE) cirrus: This driver cannot operate until it has been unloaded.

It seems that this is caused by the DRM driver:

[ 579.639] (II) config/udev: Adding drm device (/dev/dri/card0)
[ 579.642] (--) PCI:*(0:0:2:0) 1013:00b8:1af4:1100 rev 0, Mem @ 0xfc000000/33554432, 0xfebf0000/4096, BIOS @ 0x????????/65536

The DRM driver is not presend/loaded in Ubuntu 12.04.2. Subsequently the CIRRUS module loads fine
and the graphic is working as expected.

I will try if the resolution for this bug here fixes the problem:
https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/982889