Bug#613078: xserver-xorg-video-nouveau: corrupted graphics on GeForce 6150SE nForce 430
* Sven Joachim <firstname.lastname@example.org>, 2011-02-12, 18:43:
Did the version in squeeze work better?
Squeeze version worked fine (with squeeze kernel).
If so, this might be related to
[ 11.976461] [drm] nouveau 0000:00:0d.0: ======= misaligned reg 0x0060081D =======
[ 11.976511] [drm] nouveau 0000:00:0d.0: ======= misaligned reg 0x0060081D =======
This might be a kernel bug after all, see also
Sounds plausible; on the other hand his screen is much more messed than mine.
You could try an older kernel, say 2.6.36 from snapshots.debian.org.
The problem remains with linux-image-2.6.36-trunk-amd64