[Nouveau] [Bug 83168] New: No display after suspend to RAM

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83168

          Priority: medium
            Bug ID: 83168
          Assignee: nouveau at lists.freedesktop.org
           Summary: No display after suspend to RAM
        QA Contact: xorg-team at lists.x.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: nsajko at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: Driver/nouveau
           Product: xorg

Created attachment 105362
  --> https://bugs.freedesktop.org/attachment.cgi?id=105362&action=edit
the kernel log

When Linux resumes after suspension to RAM, I get no display until next  
boot, but the backlight is on. I think this was true since I started     
using this distro, but I rarely tried to use suspend.                   
This happens invariantly to Xorg.                                       
Although my hardware is 64-bit, I use a 32-bit Linux.                   

Software versions:                                                      

* Linux 3.16.1                                                          

* libdrm 2.4.56                                                         

* mesa 10.2.6                                                           

* xf86-video-nouveau 1.0.10                                             

nouveau reports errors like these to kernel log when the display should 
turn back on:                                                           

[  153.783362] nouveau E[    PBUS][0000:01:00.0] MMIO write of 0x00001e00 FAULT
at 0x6813c8
[  153.788735] nouveau E[    PBUS][0000:01:00.0] MMIO write of 0x00002e00 FAULT
at 0x6813c8
[  153.791840] nouveau E[    PBUS][0000:01:00.0] MMIO write of 0xf5153d80 FAULT
at 0x6813c8

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