[Bug 76554] [gm45] [drm:init_ring_common]: *ERROR* render ring initialization failed

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=76554

--- Comment #120 from Manuel Krause <manuelkrause at netscape.net> ---
I hope, that the patch cited in Comment 118 will get included as soon as
possible, as this enabled my testing (or even more, would enable me using
3.18?).

For the 3.18.0-rc6 with the workaround I've done:
5 hibernates+resumes /reboot same kernel/ 
5 hibernates+resumes /reboot same kernel/ 
1 hibernation+resume: 
No issues.

For the 3.18.0-rc6 WITHOUT the workaround I've done:
5 hibernates+resumes /reboot to my 3.17.4 everyday-kernel/ hibernate+resume/
reboot to 3.18.0-rc6 WITHOUT the workaround, again, 
and this row done 4 times.
No issues.

I know these tests don't go up to Jiri's 40 suspend/resume count, but my ones
have been done under real world conditions (loading applications, playing
video, etc.).

Can someone of you explain, what makes 3.18 that different from 3.17 in this
case? It would be nice to see the related improvements to be backported to
3.17.

Thank you in advance, Manuel

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