[Nouveau] [Bug 92171] New: Reboot causes nouveau corruption/ghosting

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92171

            Bug ID: 92171
           Summary: Reboot causes nouveau corruption/ghosting
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: pure.logic at nexus-software.ie
        QA Contact: xorg-team at lists.x.org

Created attachment 118503
  --> https://bugs.freedesktop.org/attachment.cgi?id=118503&action=edit
dmesg-4.3.0-rc1-broken

Running kernel 4.3-rcX I can usually boot to a good nouveau session, however if
I reboot the system the display is squashed and ghosted across the screen.

I have a capture of the kernel log showing a FIFO that has failed to reset.
Rebooting again doesn't clear the error - nor does shutting down and starting
again - I typically need to go and boot an older kernel ubuntu
3.13.0-58-generic in this case. I haven't tested shutting down the system for a
prolonged period after the corruption yet.

Attached is the kernel log of

dmesg-4.3.0-rc1.txt (totally broken both screens)
dmesg-4.3.0-rc3.txt (totally broken both screens)
dmesg-4.3.0-rc3-onescreen-good.txt (totally broken on one screen)

Also note this error is readily replicated with one screen present - the laptop
display. I'll attach a dump of that too.

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