[Bug 72602] New: [REGRESSION] r600 cayman: forced performance level gets reset to auto when playing a video with vdpau

[Bug 72602] New: [REGRESSION] r600 cayman: forced performance level gets reset to auto when playing a video with vdpau

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=72602

          Priority: medium
            Bug ID: 72602
          Assignee: dri-devel@lists.freedesktop.org
           Summary: [REGRESSION] r600 cayman: forced performance level
                    gets reset to auto when playing a video with vdpau
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: h.judt@gmx.at
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Radeon
           Product: DRI

Steps to reproduce:
1) echo low > /sys/class/drm/card0/device/power_dpm_force_performance_level
2) cat /sys/class/drm/card0/device/power_dpm_force_performance_level
   low
3) start playing a video (vdpau)
4) cat /sys/class/drm/card0/device/power_dpm_force_performance_level
   auto

Interestingly, I can repeat step 1 now and the video will play correctly, with
the value staying at "low". So it seems this occurs only when initializing
video playback (vdpau).

This started happening with kernel 3.12.0 or a rc. It did not get reset with
<=3.11.8.

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[Bug 72602] [REGRESSION] r600 cayman: forced performance level gets reset to auto when playing a video with vdpau

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https://bugs.freedesktop.org/show_bug.cgi?id=72602

Alex Deucher <agd5f@yahoo.com> changed:

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

--- Comment #1 from Alex Deucher <agd5f@yahoo.com> ---
This is the expected behavior in kernels 3.11-3.12.  The user preference is
retained in 3.13.

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[Bug 72602] [REGRESSION] r600 cayman: forced performance level gets reset to auto when playing a video with vdpau

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https://bugs.freedesktop.org/show_bug.cgi?id=72602

--- Comment #2 from Harald Judt <h.judt@gmx.at> ---
Will it suffice to cherry-pick
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=14ac88af156efcefac9ba3cf249ae84f9ff71d37
to get that behaviour in 3.12?

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[Bug 72602] [REGRESSION] r600 cayman: forced performance level gets reset to auto when playing a video with vdpau

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https://bugs.freedesktop.org/show_bug.cgi?id=72602

--- Comment #3 from Alex Deucher <agd5f@yahoo.com> ---
(In reply to comment #2)
> Will it suffice to cherry-pick
> http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/
> ?id=14ac88af156efcefac9ba3cf249ae84f9ff71d37 to get that behaviour in 3.12?

I think that should do it.  I don't remember if there are any dependencies on
previous patches.

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[Bug 72602] [REGRESSION] r600 cayman: forced performance level gets reset to auto when playing a video with vdpau

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https://bugs.freedesktop.org/show_bug.cgi?id=72602

--- Comment #4 from Harald Judt <h.judt@gmx.at> ---
Thanks, that indeed did it. It required
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0a17af373c61b4ded44a2cbac62c05ae5dad2106
too for the patch to apply.

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