[Nouveau] [Bug 58729] New: [bisected] Display fails to turn on after suspend/resume (NV86)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=58729

          Priority: medium
            Bug ID: 58729
          Assignee: nouveau at lists.freedesktop.org
           Summary: [bisected] Display fails to turn on after
                    suspend/resume (NV86)
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: wheel at herr-der-mails.de
          Hardware: Other
            Status: NEW
           Version: git
         Component: Drivers/DRI/nouveau
           Product: Mesa

Created attachment 72083
  --> https://bugs.freedesktop.org/attachment.cgi?id=72083&action=edit
dmesg for boot and one suspen/resume cycle

Since 3.7-rc7 from the nouveau git, the screen of my laptop will not turn on
after resuming from suspend to RAM.

I have bisected the problem to the commit

bb49f2c0dbff280c20830a1b303844fc604a611c is the first bad commit
commit bb49f2c0dbff280c20830a1b303844fc604a611c
Author: Ben Skeggs <bskeggs at redhat.com>
Date:   Fri Nov 9 12:09:48 2012 +1000

    drm/nv50/disp: move remaining interrupt handling into core

    Signed-off-by: Ben Skeggs <bskeggs at redhat.com>

In the current nouveau kernel git the problem still occurs, the bad commit is
14464b8cd643467cb97335eb75ea676260dd0ad8 and applies after 3.7.0.

Dmesg attached, the relevant error is probably:

[   66.285584] nouveau E[    PBUS][0000:01:00.0] MMIO write of 0x00000000 FAULT
at 0x400724
[   66.285597] nouveau E[  PTHERM][0000:01:00.0] unhandled intr 0x000001e1

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