[Bug 40336] New: Nouveau: Kernel oops when unplugging external monitor

[Bug 40336] New: Nouveau: Kernel oops when unplugging external monitor

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=40336

           Summary: Nouveau: Kernel oops when unplugging external monitor
           Product: xorg
           Version: unspecified
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
        ReportedBy: marco-w08N04152XNe4xh82S9ftw@public.gmane.org
         QAContact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org


Created an attachment (id=50518)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=50518)
lspci

Hi everybody.

I encountered a bug that is kind of annoying. It is my first bug report, so
please be patient. ;) When I use an external monitor and either
(a) just unplug the cable or
(b) change the xrandr settings and use ctrl-alt f1 to get a terminal
the screen stays black. Fortunately, I could save the log files with the help
of a ssh session.

I use a GeForce Go 7300. The command sequence is the following:
* To use the monitor: xrandr --output VGA-1 --auto --right-of LVDS-1
* To deactivate the monitor: xrandr --output VGA-1 --off

The problems also occurs when I use a much smaller monitor.

I attached all the log files (dmesg, /var/log/messages, kernel configs ...).
Because I am abroad and this computer is my only way to work here, I try to
avoid using the current git HEAD of nouveau.

# uname -a
Linux samson 3.0.1-gentoo #1 SMP Fri Aug 12 09:59:57 IDT 2011 i686 Intel(R)
Core(TM)2 CPU T5600 @ 1.83GHz GenuineIntel GNU/Linux

I use mesa-7.11, libdrm-2.4.26, and xf86-video-nouveau-0.0.16_pre20110801,
xorg-server-1.10.2

I am very eager to help fixing this bug.

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[Bug 40336] Nouveau: Kernel oops when unplugging external monitor

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=40336

--- Comment #1 from marco-w08N04152XNe4xh82S9ftw@public.gmane.org 2011-08-24 00:17:08 PDT ---
Created an attachment (id=50519)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=50519)
emerge --info output

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[Bug 40336] Nouveau: Kernel oops when unplugging external monitor

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=40336

--- Comment #2 from marco-w08N04152XNe4xh82S9ftw@public.gmane.org 2011-08-24 00:18:06 PDT ---
Created an attachment (id=50520)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=50520)
Xorg.0.log

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[Bug 40336] Nouveau: Kernel oops when unplugging external monitor

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=40336

--- Comment #3 from marco-w08N04152XNe4xh82S9ftw@public.gmane.org 2011-08-24 00:18:50 PDT ---
Created an attachment (id=50521)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=50521)
dmesg after kernel oops

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[Bug 40336] Nouveau: Kernel oops when unplugging external monitor

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=40336

--- Comment #4 from marco-w08N04152XNe4xh82S9ftw@public.gmane.org 2011-08-24 00:19:26 PDT ---
Created an attachment (id=50522)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=50522)
glxinfo output

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[Bug 40336] Nouveau: Kernel oops when unplugging external monitor

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=40336

--- Comment #5 from marco-w08N04152XNe4xh82S9ftw@public.gmane.org 2011-08-24 00:19:51 PDT ---
Created an attachment (id=50523)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=50523)
lsmod

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[Bug 40336] Nouveau: Kernel oops when unplugging external monitor

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=40336

--- Comment #6 from marco-w08N04152XNe4xh82S9ftw@public.gmane.org 2011-08-24 00:20:40 PDT ---
Created an attachment (id=50524)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=50524)
xrandr verbose output before unplugging monitor

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[Bug 40336] Nouveau: Kernel oops when unplugging external monitor

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=40336

--- Comment #7 from marco-w08N04152XNe4xh82S9ftw@public.gmane.org 2011-08-24 00:21:35 PDT ---
Created an attachment (id=50525)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=50525)
/var/log/messages

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[Bug 40336] Nouveau: Kernel oops when unplugging external monitor

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=40336

marco-w08N04152XNe4xh82S9ftw@public.gmane.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #50518|application/octet-stream    |text/plain
          mime type|                            |

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[Bug 40336] Nouveau: Kernel oops when unplugging external monitor

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=40336

marco-w08N04152XNe4xh82S9ftw@public.gmane.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #50519|application/octet-stream    |text/plain
          mime type|                            |

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[Bug 40336] Nouveau: Kernel oops when unplugging external monitor

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=40336

marco-w08N04152XNe4xh82S9ftw@public.gmane.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #50521|application/octet-stream    |text/plain
          mime type|                            |

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[Bug 40336] Nouveau: Kernel oops when unplugging external monitor

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=40336

marco-w08N04152XNe4xh82S9ftw@public.gmane.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #50522|application/octet-stream    |text/plain
          mime type|                            |

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[Bug 40336] Nouveau: Kernel oops when unplugging external monitor

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=40336

marco-w08N04152XNe4xh82S9ftw@public.gmane.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #50523|application/octet-stream    |text/plain
          mime type|                            |

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[Bug 40336] Nouveau: Kernel oops when unplugging external monitor

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=40336

marco-w08N04152XNe4xh82S9ftw@public.gmane.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #50524|application/octet-stream    |text/plain
          mime type|                            |

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[Bug 40336] Nouveau: Kernel oops when unplugging external monitor

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=40336

marco-w08N04152XNe4xh82S9ftw@public.gmane.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #50525|application/octet-stream    |text/plain
          mime type|                            |

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[Bug 40336] Nouveau: Kernel oops when unplugging external monitor

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=40336

--- Comment #8 from marco-w08N04152XNe4xh82S9ftw@public.gmane.org 2011-08-24 00:47:18 PDT ---
I should mention that I use suspend2ram from time to time. But it seems that
this bug also occur after a reboot without suspend2ram involved.

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[Bug 40336] Nouveau: Kernel oops when unplugging external monitor

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=40336

--- Comment #9 from Emil Velikov <emil.l.velikov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> 2011-08-24 14:36:37 PDT ---
Created an attachment (id=50547)
 View: https://bugs.freedesktop.org/attachment.cgi?id=50547
 Review: https://bugs.freedesktop.org/review?bug=40336&attachment=50547

fix

Hi Marco

Thanks for the comprehensive bug report

Regarding your issue - I believe it's similar to bug 40005

Although in your case the nv04 codepath has been used

Can you please try the patch provided

Cheers
Emil

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[Bug 40336] Nouveau: Kernel oops when unplugging external monitor

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=40336

--- Comment #10 from marco-w08N04152XNe4xh82S9ftw@public.gmane.org 2011-08-24 23:29:27 PDT ---
(In reply to comment #9)
> Created an attachment (id=50547)
 View: https://bugs.freedesktop.org/attachment.cgi?id=50547
 Review: https://bugs.freedesktop.org/review?bug=40336&attachment=50547

> fix
> 
> Hi Marco
> 
> Thanks for the comprehensive bug report
> 
> Regarding your issue - I believe it's similar to bug 40005
> 
> Although in your case the nv04 codepath has been used
> 
> Can you please try the patch provided
> 
> Cheers
> Emil


Hi Emil,

it worked!!
Thank you very much for your work.

I am very satisfied with nouveau.
I just have one bug on my list. Unfortunately, it is very hard to trigger this
bug. It happens sometimes with mplayer2, but not mplayer. And it is somehow
connected to a huge number of messages like
(EE) NOUVEAU(0): [DRI2] DRI2SwapBuffers: drawable has no back or front?

I will open a new bug if I have more reliable information and maybe log files.

Can be marked as fixed.

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[Bug 40336] Nouveau: Kernel oops when unplugging external monitor

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=40336

Emil Velikov <emil.l.velikov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> changed:

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

--- Comment #11 from Emil Velikov <emil.l.velikov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> 2011-08-26 10:50:53 PDT ---
Thanks for testing

Marking as FIXED

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[Bug 40336] Nouveau: Kernel oops when unplugging external monitor

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=40336

--- Comment #12 from Florian Mickler <florian-sVu6HhrpSfRAfugRpC6u6w@public.gmane.org> 2011-10-06 05:50:22 PDT ---
A patch referencing this bug report has been merged in Linux v3.1-rc6:

commit 0e83bb4eee1c504ab98367b4f7d1bc337ab213d2
Author: Emil Velikov <emil.l.velikov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date:   Thu Aug 25 21:36:51 2011 +0100

    drm/nv04/crtc: Bail out if FB is not bound to crtc

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