[Bug 57774] New: Graphic corruption on resume from hibernation

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=57774

          Priority: medium
            Bug ID: 57774
          Assignee: xorg-driver-ati at lists.x.org
           Summary: Graphic corruption on resume from hibernation
        QA Contact: xorg-team at lists.x.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: lalmeras at gmail.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: Driver/Radeon
           Product: xorg

Created attachment 70872
  --> https://bugs.freedesktop.org/attachment.cgi?id=70872&action=edit
Corrupted screen after resume from hibernation

On resume from hibernation, screen is always totally corrupted (I attach a
photo of my screen). If I move the mouse, I can see a square shape moves on the
screen. I can ssh my computer and all seems to run fine (and I can retrieve the
following attached files), but display is broken.
I can switch to terminal with ctrl+alt+Fn : display is still corrupted, but I
can see corruption pattern changes and the square shape disappears.
Graphic corruptions appears during hibernation (just before power down) and
after grub and kernal loading messages.
I use kms.

When my computer is in this state (resumed from hibernation, display
corrupted), I can press power button to enter suspend (on ram) mode :
sometimes, when I wake up from this state, screen corruption disappears.

I don't know if this can help, but if I use suspend (to ram) with
--quirk-no-chvt (which is added by default by pm tools with kms), I have the
same problem. Suspend works fine when I disable all the quirks.

Attached :
 * photo of the corrupted screen
 * pm-suspend.log (retrieved via ssh after resume)
 * dmesg (retrieved via ssh after resume)
 * lspci

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