Ubuntu
xserver-xorg-video-intel package

  1. Bug #993187
  2. Comment #12

Comment 12 for bug 993187

Revision history for this message
David Lowes (davidl-david) wrote : Re: ubuntu 12.04 64bit completely freezes frequently

I think this issue is related to "compiz"

I found a workaround for this issue:

When the computer freezes do the following:

1. CTRL+ALT+F1 (to get to the console)
2. login as your user.
3. sudo pkill compiz-redirector

Xwindows will appear to restart but the applications running under your X will not be killed.