The third patch does improve things on Gigabyte GA-EG45M-DS2H mobo
(G45), I can suspend/resume and VT switch without getting into that
annoying >1sec freeze mode. I have not yet tried running xorg for a
_long_ time to see if that still triggers the bug. glxgears now also
reports around 60 FPS as excepted with vblank (the gears move now but
they still flicker in a very annoying way, I guess this is a separate
bug though). I can play chromnium arcade with nice FPS etc.

With 3-4 windows on each cube side the overall graphics performance is
still _horrible_ when spinning the cube though. It doesn't stop for
>1sec but it's embarrassingly slow for a quad core 2.8ghz, 8GB machine.
If I _hold_ the "spin cube to the right" button for about 10-15 seconds
then audio from totem is more or less certain to skip (silence for about
1sec) which is really annoying because it happens also sometimes on
single normal ALT-TAB (not every ALT-TAB though).

G45 definitely needs some more love before it's usable. I will go test
UXA now.

-- 
[drm] compiz animations cause temporary freezes with vblank
https://bugs.launchpad.net/bugs/320813
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