[Bug 92171] New: Reboot causes nouveau corruption/ghosting - bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ

From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org
To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: [Bug 92171] New: Reboot causes nouveau corruption/ghosting
Date: Mon, 28 Sep 2015 23:01:23 +0000	[thread overview]
Message-ID: <bug-92171-8800@http.bugs.freedesktop.org/> (raw)

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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-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: pure.logic-SyKdqv6vbfZdzvEItQ6vdLNAH6kLmebB@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.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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