[Bug 93630] New: [NVE6] disrupted display, cannot switch VT, everything else still works, E[ PDISP] link training failed

[Bug 93630] New: [NVE6] disrupted display, cannot switch VT, everything else still works, E[ PDISP] link training failed

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=93630

            Bug ID: 93630
           Summary: [NVE6] disrupted display, cannot switch VT, everything
                    else still works, E[   PDISP] link training failed
           Product: xorg
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: matthias.h.nagel-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

The display randomly gets corrupted with randomly moving block artifacts. This
means the display looks like a chess board with every other block being either
completely black or semi-transparent. In the latter case I can still see the
normal desktop but it appears like being looked at trough a 50%-gray filter.
The other blocks of the "chess board" are good. If the display content changes
(e.g. mouse movement), the "arrangement of the chess board" changes.

I can still work normally, start desktop applications, click around and shut
down the PC the normal way. But VT switching does not work anymore.

The crash seems to occur more frequently, if I play videos (mplayer or Flash),
but this is not a requirement.

The crash does not occur, if I use the blob firmware
(nouveau.config="NvGrUseFw=1").

Graphic card: "ASUS GeForce GTX 660 PCI 3.0 2GB DDR5"

uname: "Linux 4.1.12-gentoo #2 SMP Wed Dec 23 19:28:09 CET 2015 x86_64 Intel(R)
Xeon(R) CPU E3-1230 v3 @ 3.30GHz GenuineIntel GNU/Linux"

Dmesg:

Jan 06 18:43:09 matthias-pc kernel: nouveau E[  
PDISP][0000:01:00.0][0x00000006] 04:0006:0f44: link training failed
Jan 06 18:43:09 matthias-pc kernel: nouveau E[  
PDISP][0000:01:00.0][0x00000006] 04:0006:0f44: link training failed
Jan 06 18:43:09 matthias-pc kernel: nouveau E[  
PDISP][0000:01:00.0][0x00000006] 04:0006:0f44: link not trained before attach
Jan 06 18:43:09 matthias-pc kernel: nouveau E[  
PDISP][0000:01:00.0][0x00000006] 04:0006:0f44: link training failed

For more information see attached files.

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[Bug 93630] [NVE6] disrupted display, cannot switch VT, everything else still works, E[ PDISP] link training failed

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=93630

--- Comment #1 from Matthias Nagel <matthias.h.nagel-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
Created attachment 120865
  --> https://bugs.freedesktop.org/attachment.cgi?id=120865&action=edit
dmesg output after crash

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[Bug 93630] [NVE6] disrupted display, cannot switch VT, everything else still works, E[ PDISP] link training failed

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=93630

--- Comment #2 from Matthias Nagel <matthias.h.nagel-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
Created attachment 120866
  --> https://bugs.freedesktop.org/attachment.cgi?id=120866&action=edit
dmesg boot messages

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[Bug 93630] [NVE6] disrupted display, cannot switch VT, everything else still works, E[ PDISP] link training failed

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=93630

--- Comment #3 from Matthias Nagel <matthias.h.nagel-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
Created attachment 120867
  --> https://bugs.freedesktop.org/attachment.cgi?id=120867&action=edit
lspic -v output

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[Bug 93630] [NVE6] disrupted display, cannot switch VT, everything else still works, E[ PDISP] link training failed

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=93630

--- Comment #4 from Matthias Nagel <matthias.h.nagel-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
Created attachment 120868
  --> https://bugs.freedesktop.org/attachment.cgi?id=120868&action=edit
Xorg log

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[Bug 93630] [NVE6] disrupted display, cannot switch VT, everything else still works, E[ PDISP] link training failed

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=93630

--- Comment #5 from Matthias Nagel <matthias.h.nagel-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
I also reported bug #93629 at the same time. Both problems occur in turns. I do
not know if they are related, because the symptoms are completely different,
but they both disappear using the blob firmware.

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[Bug 93630] [NVE6] disrupted display, cannot switch VT, everything else still works, E[ PDISP] link training failed

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https://bugs.freedesktop.org/show_bug.cgi?id=93630

Martin Peres <martin.peres-GANU6spQydw@public.gmane.org> changed:

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

--- Comment #6 from Martin Peres <martin.peres-GANU6spQydw@public.gmane.org> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance:
https://gitlab.freedesktop.org/xorg/driver/xf86-video-nouveau/issues/249.

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