Nouveau - Sep 2013 - [Bug 69387] New: X hangs on resume/monitor blank with nv50cal_space: -16

https://bugs.freedesktop.org/show_bug.cgi?id=69387

          Priority: medium
            Bug ID: 69387
          Assignee: nouveau at lists.freedesktop.org
           Summary: X hangs on resume/monitor blank with nv50cal_space:
                    -16
        QA Contact: xorg-team at lists.x.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: maris.nartiss at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: Driver/nouveau
           Product: xorg

Created attachment 85873
  --> https://bugs.freedesktop.org/attachment.cgi?id=85873&action=edit
Xorg log file when X failed to recover from power save state

When resuming from suspend to ram or blank screen (power saving), mouse is
working but screen is stuck (not garbage).

After SSHing into system, it was under high load as X and kworker processes
where fighting for CPU. dmesg was full with "nouveau E[ X[2406]]
nv50cal_space:
-16"
Reboot fixes the issue.

Gentoo ~AMD64

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--- Comment #1 from Maris Nartiss <maris.nartiss at gmail.com> ---
Created attachment 85874
  --> https://bugs.freedesktop.org/attachment.cgi?id=85874&action=edit
System log file when resuming from power save failed

A system log file as dmesg had wrapped over due to repeating error messages
(trimmed from the end of log file as were identical)

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--- Comment #2 from Maris Nartiss <maris.nartiss at gmail.com> ---
After kernel upgrade to 3.11.1 and xorg-server-1.14.3, resume from suspend was
still broken but I didn't observe any hangs during power save mode.

This issue can be completely fixed by adding Option "NoAccel"
"true" to
xorg.conf file. Suspend/resume seems to work flawles without acceleration. It
fixed also some random hangs during normal work (no bug report as no idea how
to triger them or anything in system logs). 
Leaving this bug open suspend/resume should work also with enabled
acceleration.

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--- Comment #3 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Is this still an issue with more recent kernels?

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Maris Nartiss <maris.nartiss at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #4 from Maris Nartiss <maris.nartiss at gmail.com> ---
I managed to suspend/resume without any problems with enabled acceleration for
some 5 times. Yahoo! Issue seems to be solved. Finally I will get acceleration
back (and thus upgrade to xf86-video-nouveau-1.0.11 #86164).

Tested with:
kernel: 4.2.4-gentoo
xorg-server-1.17.4
xf86-video-nouveau-1.0.10-r1

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