Bug#580601: [drm/i915] flickering and artifacts on (some?) gm45 with powersave' from 'xserver-xorg-core: Flickering and artifacts after update, using intel driver

[Fernando Lemos <fernandotcl@gmail.com>]

Some days ago linux-image-2.6.32-14 was released, and one of the entries in
the changelog says:

  * Add drm changes from stable 2.6.33.5:
    - i915: Disable FBC on 915GM and 945GM (Closes: #582427)

I think that's the patch:

https://patchwork.kernel.org/patch/86999/

#582427 could be related to this issue. However, I just booted into 2.6.32-15
with powersave=1 commented out (this time I'm using modprobe.d instead of
defaults/grub, and I re-ran update-grub afterwards to make sure I really was
not setting powersave=0 or powersave=1) and the problem is still there (the
screen flickered several times in just a few minutes).