Created attachment 104212
dmesg with patch from comment #80
Here is a dmesg from two suspend-resume cycles with Daniel's patch from
comment #80 (applied on top of all previous patches from Chris).
There seems to be a change in behavior!
Interestingly, I am not seeing
[drm:init_ring_common] *ERROR* render ring initialization failed
....
messages any more, and seems like I am indeed running accelerated still
(i.e. the graphic seems to be still reasonably fast and usable).
For some reason there is still
render ring initialization failed [head now 01000000], fudging
message present though.
I will now try the patch from comment #80 on top of something more
recent than the 3.15-based branch with all Chris' patches applied, and
will let you know.
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https://bugs.launchpad.net/bugs/1339939
Title:
[Lenovo ThinkPad T400] intel graphics fail after suspend with 3.16
kernel
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