I am also having issues with my graphics driver.
Graphics: Intel® 945GM x86/MMX/SSE2
OS type: 32-bit
The screen gets corrupted with lines all over it and the only way to fix it is to force a refresh by moving some windows around with the mouse. The issue started after I upgraded from 15.4 to 15.10, which appears to be how it went for Alejandro Lázaro and jit, but the solution that jit tried did not work for me; which involved editing the following file with the contents listed:
/usr/share/X11/xorg.conf.d/20-intel.conf
Section "Device"
Identifier "Intel Graphics"
Driver "intel"
Option "AccelMethod" "uxa"
EndSection
No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 15.10 Release: 15.10 Codename: wily
– Raymond Erdey Feb 03 '16 at 01:27