Nouveau - Dec 2012 - [Bug 58428] New: X crashes when running opengl application after reclocking nouveau driver to use highest speed

https://bugs.freedesktop.org/show_bug.cgi?id=58428

          Priority: medium
            Bug ID: 58428
          Assignee: nouveau at lists.freedesktop.org
           Summary: X crashes when running opengl application after
                    reclocking nouveau driver to use highest speed
        QA Contact: xorg-team at lists.x.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: amade at asmblr.net
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: Driver/nouveau
           Product: xorg

Linux lain 3.7.0-hardened #1 SMP PREEMPT Mon Dec 17 03:03:30 CET 2012 x86_64
Intel(R) Core(TM) i3 CPU M 350 @ 2.27GHz GenuineIntel GNU/Linux

(Tested both on hardened and vanilla kernels)

[    2.719980] nouveau  [     DRM] 3 available performance level(s)
[    2.719984] nouveau  [     DRM] 0: core 135MHz shader 270MHz memory 135MHz
voltage 850mV
[    2.719987] nouveau  [     DRM] 1: core 405MHz shader 810MHz memory 405MHz
voltage 850mV
[    2.719989] nouveau  [     DRM] 3: core 625MHz shader 1530MHz memory 790MHz
voltage 1030mV
[    2.719992] nouveau  [     DRM] c: core 405MHz shader 810MHz memory 405MHz
voltage 850mV

echo 3 > /sys/class/drm/card0/device/performance_level

run opengl app (I run xonotic-glx)
at first you can move mouse a bit but it just hangs a bit later, after a while
X crashes

(It reclocks works fine when reclocking between 0 and 1)

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--- Comment #1 from Amadeusz <amade at asmblr.net> ---
Created attachment 71678
  --> https://bugs.freedesktop.org/attachment.cgi?id=71678&action=edit
X log from vanilla kernel

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--- Comment #2 from Amadeusz <amade at asmblr.net> ---
Created attachment 71679
  --> https://bugs.freedesktop.org/attachment.cgi?id=71679&action=edit
dmesg | grep nouveau from vanilla kernel

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--- Comment #3 from Amadeusz <amade at asmblr.net> ---
Created attachment 71680
  --> https://bugs.freedesktop.org/attachment.cgi?id=71680&action=edit
X log from hardened kernel

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--- Comment #4 from Amadeusz <amade at asmblr.net> ---
Created attachment 71681
  --> https://bugs.freedesktop.org/attachment.cgi?id=71681&action=edit
dmesg | grep nouveau from hardened kernel

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Amadeusz <amade at asmblr.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #71678|0                           |1
        is obsolete|                            |

--- Comment #5 from Amadeusz <amade at asmblr.net> ---
Created attachment 71684
  --> https://bugs.freedesktop.org/attachment.cgi?id=71684&action=edit
X log from vanilla kernel

Just noticed that for whatever reason my bootloader decided that if it can't
load kernel it will just load another one... vanilla for real this time

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Amadeusz <amade at asmblr.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #71679|0                           |1
        is obsolete|                            |

--- Comment #6 from Amadeusz <amade at asmblr.net> ---
Created attachment 71685
  --> https://bugs.freedesktop.org/attachment.cgi?id=71685&action=edit
dmesg | grep nouveau from vanilla kernel

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|X crashes when running      |[NVA8] X crashes when
                   |opengl application after    |running opengl application
                   |reclocking nouveau driver   |after reclocking nouveau
                   |to use highest speed        |driver to use highest speed

--- Comment #7 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Does this happen if you don't do any reclocking? If so, let's get
reclocking
out of the picture.

If not, you could try a newer kernel, but I think in general, reclocking
isn't
really supported (you probably noticed that you had to add a special parameter
to get it to work, that's not a coincidence). I think some work is currently
being done for the NVA3+ cards, you could try to find out status in #nouveau on
freenode if you're interested.

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

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

--- Comment #8 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Reclocking is presently not supported. We know it kills many different cards
for many different reasons. Closing as WONTFIX. (Not that it'll never get
fixed, just not worth keeping this bug open for a presently-unsupported
feature.) When/if we get good reclocking support, and you still have issues,
feel free to reopen.

[It appears that you're seeing mem faults, and reclocking memory is one of
the
buggiest parts of the current reclocking logic. Makes sense.]

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