Public bug reported:

After upgrading to oneiric, using opera-next (version 12.00.1105 from the Opera 
deb repository) triggers a gpu lockup: mouse still moves but the screen does 
not react to input and is not being updated. It is possible to ssh in and get 
e.g. Xorg.0.log.
This did not happen in natty even though the opera-next binary was the same.
I get also temporary lockups (few seconds) when I use hugin to join several 
photos into a panoramic view. This may have nothing to do with the report 
above, but leaves a general impression that the graphic system in oneiric is 
unreliable compared to natty.

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

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https://bugs.launchpad.net/bugs/876556

Title:
  GPU lockup after upgrade to 11.10

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