Since a couple of days now, my unity desktop background smears everything, just like what old Windows versions were famous for:
Of course, I tried rebooting a couple of times. Also, I switched graphics driver and I tried to change wallpaper and theme, but none of them solved the problem.
What could be causing that problem, and where can I search on for its source?
Infomation update
I'm using Ubuntu 13.04 (not updated to 13.10 yet).
The following command were all run from cinnamon (on the same Ubuntu installation).
sudo lsb_release -a:
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 13.04
Release: 13.04
Codename: raring
sudo uname -a:
Linux cedric-MacBookPro 3.8.0-32-generic #47-Ubuntu SMP Tue Oct 1 22:35:23 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
sudo dpkg -l | grep xserver-xorg-video:
ii xserver-xorg-video-all 1:7.7+1ubuntu4 amd64 X.Org X server -- output driver metapackage
ii xserver-xorg-video-ati 1:7.1.0-0ubuntu2 amd64 X.Org X server -- AMD/ATI display driver wrapper
ii xserver-xorg-video-cirrus 1:1.5.2-0ubuntu1 amd64 X.Org X server -- Cirrus display driver
ii xserver-xorg-video-fbdev 1:0.4.3-0ubuntu1 amd64 X.Org X server -- fbdev display driver
ii xserver-xorg-video-intel 2:2.21.6-0ubuntu4.3 amd64 X.Org X server -- Intel i8xx, i9xx display driver
ii xserver-xorg-video-mach64 6.9.3-0ubuntu1 amd64 X.Org X server -- ATI Mach64 display driver
ii xserver-xorg-video-mga 1:1.6.2-0ubuntu1 amd64 X.Org X server -- MGA display driver
ii xserver-xorg-video-modesetting 0.7.0-0ubuntu2 amd64 X.Org X server -- Generic modesetting driver
ii xserver-xorg-video-neomagic 1:1.2.7-0ubuntu1 amd64 X.Org X server -- Neomagic display driver
ii xserver-xorg-video-nouveau 1:1.0.7-0ubuntu1 amd64 X.Org X server -- Nouveau display driver
ii xserver-xorg-video-openchrome 1:0.3.1-0ubuntu1.13.04.1 amd64 X.Org X server -- VIA display driver
ii xserver-xorg-video-qxl 0.1.0-0ubuntu3 amd64 X.Org X server -- QXL display driver
ii xserver-xorg-video-r128 6.9.1-0ubuntu1 amd64 X.Org X server -- ATI r128 display driver
ii xserver-xorg-video-radeon 1:7.1.0-0ubuntu2 amd64 X.Org X server -- AMD/ATI Radeon display driver
ii xserver-xorg-video-s3 1:0.6.5-0ubuntu3 amd64 X.Org X server -- legacy S3 display driver
ii xserver-xorg-video-savage 1:2.3.6-0ubuntu1 amd64 X.Org X server -- Savage display driver
ii xserver-xorg-video-siliconmotion 1:1.7.7-0ubuntu1 amd64 X.Org X server -- SiliconMotion display driver
ii xserver-xorg-video-sis 1:0.10.7-0ubuntu1 amd64 X.Org X server -- SiS display driver
ii xserver-xorg-video-sisusb 1:0.9.6-0ubuntu1 amd64 X.Org X server -- SiS USB display driver
ii xserver-xorg-video-tdfx 1:1.4.5-0ubuntu1 amd64 X.Org X server -- tdfx display driver
ii xserver-xorg-video-trident 1:1.3.6-0ubuntu2 amd64 X.Org X server -- Trident display driver
ii xserver-xorg-video-vesa 1:2.3.2-0ubuntu1 amd64 X.Org X server -- VESA display driver
ii xserver-xorg-video-vmware 1:12.0.2+git.e5ac80d8-0ubuntu1 amd64 X.Org X server -- VMware display driver
sudo lspci | grep VGA:
01:00.0 VGA compatible controller: NVIDIA Corporation GT216M [GeForce GT 330M] (rev a2)