Nouveau - Sep 2015 - [Bug 92171] New: Reboot causes nouveau corruption/ghosting

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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--- Comment #1 from Bryan O'Donoghue <pure.logic at nexus-software.ie>
---
Created attachment 118504
  --> https://bugs.freedesktop.org/attachment.cgi?id=118504&action=edit
dmesg-4.3.0-rc3-broken

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--- Comment #2 from Bryan O'Donoghue <pure.logic at nexus-software.ie>
---
Created attachment 118505
  --> https://bugs.freedesktop.org/attachment.cgi?id=118505&action=edit
dmesg-4.3.0-rc3-broken-onescreen-good

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Ilia Mirkin <imirkin at alum.mit.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Reboot causes nouveau       |[NVE7] Reboot causes
                   |corruption/ghosting         |nouveau corruption/ghosting

--- Comment #3 from Ilia Mirkin <imirkin at alum.mit.edu> ---
How are the screens plugged in? Can you provide the dmesg when booted with

nouveau.debug=debug drm.debug=0xe

This looks like a non-optimus setup, is that right?

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--- Comment #4 from Bryan O'Donoghue <pure.logic at nexus-software.ie>
---
Yes, that's a non-optimus setup.

I'll get you that capture. Right now I have this weird artifact on my
primary
laptop screen that won't go away after booting the system a number of times
@
the 4.3.0-rcX kernel - I'm assuming the system isn't actually resetting
the
nvidia when I power down (some sort of warm boot) - so I've disconnected the
power and I'm letting the battery run flat.

I'm attaching a picture of the artifact that persisting through resets (note
it's still there even after leaving the system powered off overnight)

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--- Comment #5 from Bryan O'Donoghue <pure.logic at nexus-software.ie>
---
Created attachment 118512
  --> https://bugs.freedesktop.org/attachment.cgi?id=118512&action=edit
artifact-on-primary-screen

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Ilia Mirkin <imirkin at alum.mit.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #118512|text/plain                  |image/jpeg
          mime type|                            |

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--- Comment #6 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Also useful to know if the issue happens with 4.2. The nouveau driver got
basically rewritten in 4.3, a regression easily could have crept in.

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--- Comment #7 from Bryan O'Donoghue <pure.logic at nexus-software.ie>
---
Just to confirm.

1. First boot is normal
2. Issue a reboot
3. Get corrupted screen
4. Need to completely allow power to drain (so presumably there is some warm
boot foolery going on here with the BIOS when I just do a power down)

Requested dmesg attached.

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--- Comment #8 from Bryan O'Donoghue <pure.logic at nexus-software.ie>
---
I'll compile a 4.2 tag and let you know.

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--- Comment #9 from Bryan O'Donoghue <pure.logic at nexus-software.ie>
---
Created attachment 118515
  --> https://bugs.freedesktop.org/attachment.cgi?id=118515&action=edit
4.3-rc3-dma-debug-included

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Bryan O'Donoghue <pure.logic at nexus-software.ie> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #118515|4.3-rc3-dma-debug-included  |4.3-rc3-drm-debug-included
        description|                            |

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Martin Peres <martin.peres at free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |MOVED
             Status|NEW                         |RESOLVED

--- Comment #10 from Martin Peres <martin.peres at free.fr> ---
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