I found this in the upstream kernel 2.6.37-rc1 changelog:
commit 4b60e5cb707aa1d44fd01680296a2caf45dd6fae
Author: Chris Wilson
Date: Sun Aug 8 11:53:53 2010 +0100
drm/i915: Clear scanline waits after disabling the pipe.
If we disable the pipe and the GPU is currently waiting on a scanline
WAIT_FOR_EVENT, the GPU will hang. Fortunately, there is a magic bit
which we can write on i915+ to break this wait after disabling the
pipe.
References:
Bug 29252 - [Arrandale] Hung WAIT_FOR_EVENT when running rss-glx-skyrocket
https://bugs.freedesktop.org/show_bug.cgi?id=29252
Bug 28964 - [i965gm] GPU infinite MI_WAIT_FOR_EVENT while watching video
in Totem
https://bugs.freedesktop.org/show_bug.cgi?id=28964
and many others.
Signed-off-by: Chris Wilson
Cc: Jesse Barnes
** Bug watch added: freedesktop.org Bugzilla #29252
http://bugs.freedesktop.org/show_bug.cgi?id=29252
--
[i965gm] GPU lockup 77c6dfe5
https://bugs.launchpad.net/bugs/603064
You received this bug notification because you are a member of Ubuntu-X,
which is the registrant for xf86-video-intel.
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