Ubuntu
xserver-xorg-video-intel package

  1. Bug #945006
  2. Comment #21

Comment 21 for bug 945006

Revision history for this message
Joe Jasinski (joe-jasinski) wrote : Re: Screen flickers heavily after upgrading to 12.04 beta 1

Seems I have the same situation. I had been upgrading Ubuntu successfully for years. Was currently at 11.10 when I upgraded today to 12.04. The flickering occurs when I try to log into Unity or KDE. More specifically, I'm using two monitors. One of the monitors goes crazy (moving the mouse causes one of the monitors to scroll like a horizontal refresh issue). The other monitor is ok until I logout. When I logout or try to restart gdm, both monitors start flicking and the only thing that fixes is a reboot.

My work-around so far has been to unplug one of my monitors, but this is not ideal at all. I don't have an /etc/X11/xorg.conf file and am not sure what defaults it takes (if I want to make edits to it).

lspci
00:02.0 VGA compatible controller: Intel Corporation 82Q963/Q965 Integrated Graphics Controller (rev 02)