Sergiy Zuban  wrote 49 minutes ago:  (permalink) 
<...>

So since I'm running on GEM-enabled kernel/driver/xserver why we again get huge 
regression after several months of work?
<...>

GEM is not used by intel drivers by default yes. As for now, it need to be 
enabled manually by adding line
Option          "AccelMethod"           "UXA"

to the device section of xorg.conf. It does not work perfectly yet, but
you'll get reasonable performance (about 400 fps on glxgears) and
working DRI2. There are some painful bugs with it (ctrl-alt-f* console
does not work, and suspend/hibernate is broken, plus some minor problems
with compiz), but it is better (IMHO) than jaunty EXA acceleration (50
fps, no suspend/hibernate, no DRI2) and there is still some work going,
so the things will be improving. There is some kernel work going as
well, so 2.6.29 kernel should work better with intel video.

There are major architecture changes going within a whole graphics
system, so yes, things are broken. Hope this period of chaos is moving
to its end :)

-- 
MASTER: Poor graphics performance on Intel
https://bugs.launchpad.net/bugs/252094
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