[Bug 72351] [GM45] oops in iowrite32 after long hibernation

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=72351

--- Comment #13 from Jae-hyeon Park <jhyeon at gmail.com> ---
I tried the bug76554 branch with head cfa8aaa35f180268c99e72964228c944930af680
by (shallow-)cloning the git repo.  Now, the long hibernation issue seems to be
gone.  Thank you.

However, I hit "*ERROR* render ring initialization failed" under a different
condition.  Maybe due to this, compiz or sometimes the X server crashes.  A
good thing is that this takes much less time to reproduce.  The steps to
trigger the error are:

0. turn off computer
1. disconnect external display from the VGA port
2. turn on Thinkpad X200 Tablet and wait until X server starts up
3. connect an LCD TV to the VGA port
4. log in (compiz then starts up)
5. hibernate
6. resume

I attach dmesg with drm.debug=7 and Xorg.0.log.
Should I file a different bug?

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