Public bug reported:

Ever since accepting an update package in mid March my PC has had almost
continuous screen freeze issues several times a day, either transitory
or complete requiring a hard re boot. I also get a continuous stream of
apport system error messages which I have been sending off since mid
March. The freeze has sometimes been a diagonal break up of the screen
picture but mostly just a complete freeze of picture.

Looking at Google searches this seems to be a persistent problem for many 
users. 
I am using Ubuntu12.10 64 bit version on a Dell Inspiron 660s. The very long 
apport report mentions sandybridge-gt1GPU lockup IPEHR:0x25102000 IPEHR: 
0x0b14001 and also mentions xserver-xorg-video-intel2:2.20-.9-ubuntu2. I have 
tried reinstalling this latter file with no improvment resulting. The freeze 
seems to be triggered by using the wheel on the wheel mouse, or by sudden 
movements of the mouse.

Can this bug please be fixed? How about re-instating things to the way
they were before the mid March update package?

Xserver-xorg version 1:7.7+1ubuntu4

** Affects: xserver-xorg-video-intel (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1163976

Title:
  Sandybridge-gt1 lockup

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