The relevant output from lspci -nn is:

00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile
945GM/GMS, 943/940GML Express Integrated Graphics Controller [8086:27a2]
(rev 03)


** Summary changed:

- Kernel mode switching causes frequent screen flashing with intel video card 
(not present with the same packages and kernel 2.6.30)
+ Kernel mode switching causes frequent screen flickering with intel video card 
(not present with the same packages and kernel 2.6.30)

** Description changed:

- If I boot with kernel 2.6.31 in karmic, I see the screen flashing a lot
- and can't use my system. I have an integrated intel video card using the
- xserver-xorg-video-intel driver. I attach the information that I
- gathered from the console by memory, if it's not enough ask me the rest
- and I'll reboot and get it.
+ If I boot with kernel 2.6.31 in karmic, I see the screen flickering a
+ lot and can't use my system at all. I have an integrated intel video
+ card using the xserver-xorg-video-intel driver. I attach the information
+ that I gathered from the console by memory, if it's not enough ask me
+ the rest and I'll reboot and get it.
  
  If I disable kms by adding i915.modeset=0 to the kernel command line,
  the problem disappears.

-- 
Kernel mode switching causes frequent screen flickering with intel video card 
(not present with the same packages and kernel 2.6.30)
https://bugs.launchpad.net/bugs/402982
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