[Bug 77394] New: Desktop freezes often when KDE starts compositing or mplayer GL window changes

[Bug 77394] New: Desktop freezes often when KDE starts compositing or mplayer GL window changes

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=77394

          Priority: medium
            Bug ID: 77394
          Assignee: dri-devel@lists.freedesktop.org
           Summary: Desktop freezes often when KDE starts compositing or
                    mplayer GL window changes
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: nine@detonation.org
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: DRM/Radeon
           Product: DRI

When I turn on KDE compositing the desktop freezes more often than not. These
freezes can also be provoked when configuring mplayer for GL output and opening
a video file. If that alone is not enough, just change repeatedly from window
to fullscreen and back. Attaching Xorg.0.log and dmesg of such a crash.

I can reboot the system cleanly using alt+sysrq+r and ctrl+alt+del but any
attempts to get a nice backtrace of the X server with gdb failed due to the
process hanging in kernel space.

Hardware:
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Curacao XT [Radeon R9 270X]

Running:
kernel 3.14,
libdrm2-2.4.99~git20140411-1.1,
xorg-x11-server-7.6_1.15.99.902-306.1
Mesa-10.2~git20140411-5.1
llvm-r600-3.5~svn20140408-1.1.x86_64
openSUSE 13.1

Downgrading components to openSUSE 13.1 stock versions did not help except for
downgrading the kernel to 3.11.

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[Bug 77394] Desktop freezes often when KDE starts compositing or mplayer GL window changes

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https://bugs.freedesktop.org/show_bug.cgi?id=77394

--- Comment #1 from nine@detonation.org ---
Created attachment 97304
  --> https://bugs.freedesktop.org/attachment.cgi?id=97304&action=edit
dmesg taken after desktop freeze

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[Bug 77394] Desktop freezes often when KDE starts compositing or mplayer GL window changes

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https://bugs.freedesktop.org/show_bug.cgi?id=77394

--- Comment #2 from nine@detonation.org ---
Created attachment 97305
  --> https://bugs.freedesktop.org/attachment.cgi?id=97305&action=edit
Xorg.0.log of a session after a freeze

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[Bug 77394] Desktop freezes often when KDE starts compositing or mplayer GL window changes

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https://bugs.freedesktop.org/show_bug.cgi?id=77394

--- Comment #3 from Alex Deucher <agd5f@yahoo.com> ---
Does this patch set help:
http://lists.freedesktop.org/archives/dri-devel/2014-April/057512.html
and the new *mc2.bin ucode here:
http://people.freedesktop.org/~agd5f/radeon_ucode/

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[Bug 77394] Desktop freezes often when KDE starts compositing or mplayer GL window changes

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https://bugs.freedesktop.org/show_bug.cgi?id=77394

--- Comment #4 from nine@detonation.org ---
(In reply to comment #3)
> Does this patch set help:
> http://lists.freedesktop.org/archives/dri-devel/2014-April/057512.html

Which tree does this apply to?

I applied it to 3.14 but the third patch was rejected and the resulting kernel
crashed on any attempt to open a GL window.

On Linus' master the third patch was rejected as well but at least I was able
to enable desktop effects and start mplayer. Still got problems with the screen
suddenly going blank and the system freezing (had those before as well but much
less frequently, maybe due to lower GL usage).

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[Bug 77394] Desktop freezes often when KDE starts compositing or mplayer GL window changes

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https://bugs.freedesktop.org/show_bug.cgi?id=77394

--- Comment #5 from Alex Deucher <agd5f@yahoo.com> ---
It might be easier to just test Christian's fixes branch here:
http://cgit.freedesktop.org/~deathsimple/linux/log/?h=drm-fixes-3.15-wip

Does disabling dpm help?  Append radeon.dpm=0 to the kernel command line in
grub.  If that helps, the patches I mentioned may help.

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[Bug 77394] Desktop freezes often when KDE starts compositing or mplayer GL window changes

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https://bugs.freedesktop.org/show_bug.cgi?id=77394

--- Comment #6 from nine@detonation.org ---
With the drm-fixes-3.15-wip branch, updated firmware and radeon.dpm=0 I can now
run KDE with desktop effects enabled and mplayer's GL output seems stable. But
I can still provoke kernel panics (hard lockup on CPU x) quite easily by
pressing and holding 'f' in mplayer quickly and repeatedly going into
fullscreen mode and back to windowed mode. I also get those blank screens and
lockups on resume from disk.

I guess there are multiple issues here working together to spoil my user
experience ;)

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[Bug 77394] Desktop freezes often when KDE starts compositing or mplayer GL window changes

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https://bugs.freedesktop.org/show_bug.cgi?id=77394

--- Comment #7 from nine@detonation.org ---
I can easily reproduce GPU lockups by switching the power profile to high. I
bought a new power supply that has power to spare, but it did not change
anything.

Should I file a separate bug report for these lockups?

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[Bug 77394] Desktop freezes often when KDE starts compositing or mplayer GL window changes

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https://bugs.freedesktop.org/show_bug.cgi?id=77394

--- Comment #8 from nine@detonation.org ---
Created attachment 97776
  --> https://bugs.freedesktop.org/attachment.cgi?id=97776&action=edit
dmesg after GPU lockup on setting power profile to high

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[Bug 77394] Desktop freezes often when KDE starts compositing or mplayer GL window changes

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https://bugs.freedesktop.org/show_bug.cgi?id=77394

--- Comment #9 from Alex Deucher <agd5f@yahoo.com> ---
Do you still get lockups without forcing the power level to high?  You
shouldn't need to force it.  On auto the hw will automatically switch between
levels based on load.

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[Bug 77394] Desktop freezes often when KDE starts compositing or mplayer GL window changes

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https://bugs.freedesktop.org/show_bug.cgi?id=77394

--- Comment #10 from nine@detonation.org ---
(In reply to comment #9)
> Do you still get lockups without forcing the power level to high? 

Normal desktop use seems stable as long as I don't use mplayer.

> You
> shouldn't need to force it.  On auto the hw will automatically switch
> between levels based on load.

I thought automatic switching is what dpm is about? Anyway setting
power_profile to auto gave me an immediate lockup just like the high profile.

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[Bug 77394] Desktop freezes often when KDE starts compositing or mplayer GL window changes

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https://bugs.freedesktop.org/show_bug.cgi?id=77394

--- Comment #11 from Alex Deucher <agd5f@yahoo.com> ---
(In reply to comment #10)
> (In reply to comment #9)
> > Do you still get lockups without forcing the power level to high? 
> 
> Normal desktop use seems stable as long as I don't use mplayer.
> 
> > You
> > shouldn't need to force it.  On auto the hw will automatically switch
> > between levels based on load.
> 
> I thought automatic switching is what dpm is about? Anyway setting
> power_profile to auto gave me an immediate lockup just like the high profile.

Correct.  Auto is the default power profile.  So it appears that changing the
state causes a problem.

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[Bug 77394] Desktop freezes often when KDE starts compositing or mplayer GL window changes

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https://bugs.freedesktop.org/show_bug.cgi?id=77394

--- Comment #12 from nine@detonation.org ---
Today I gave in and installed fglrx. Despite considerable torture the system is
stable, so I can at least rule out some hardware problem.

Do you have any suggestions on what I can do to help fix this problem?
Considering that I have a way to reliably reproduce these GPU lockups, that I
have the kernel source to play with and that I can ssh into the system, I may
be able to gather more information. Unless the problem is likely to be in the
firmware.

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[Bug 77394] Desktop freezes often when KDE starts compositing or mplayer GL window changes

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https://bugs.freedesktop.org/show_bug.cgi?id=77394

--- Comment #13 from nine@detonation.org ---
After two months with a stable system using fglrx, I gave radeon a try again. I
can still easily reproduce the GPU lockups using kernel
3.16.0-rc2-5.g19015a0-desktop and radeon_ucode fetched today. dmesg output
changed a litte. Maybe this helps?

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[Bug 77394] Desktop freezes often when KDE starts compositing or mplayer GL window changes

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https://bugs.freedesktop.org/show_bug.cgi?id=77394

--- Comment #14 from nine@detonation.org ---
Created attachment 102331
  --> https://bugs.freedesktop.org/attachment.cgi?id=102331&action=edit
dmesg after echo auto > power_profile

Problem starts at 131.600354

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[Bug 77394] Desktop freezes often when KDE starts compositing or mplayer GL window changes

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https://bugs.freedesktop.org/show_bug.cgi?id=77394

--- Comment #15 from nine@detonation.org ---
News: I actually can switch power levels as much as I like as long as X was not
started yet. Starting X afterwards gives me a stable system with changed power
level. As soon as it was started once however, the lockups happen on trying to
change the power level. Even if I shut down the X server.

Downgrading xorg-x11-server from 7.6_1.16.99.9-2.2 to 7.6_1.16.1-350.4 fixes
this problem but then I get random lockups and crashes which is not much better
:/

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[Bug 77394] Radeon R9 270X GPU lockup on power profile change

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https://bugs.freedesktop.org/show_bug.cgi?id=77394

nine@detonation.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Desktop freezes often when  |Radeon R9 270X GPU lockup
                   |KDE starts compositing or   |on power profile change
                   |mplayer GL window changes   |

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[Bug 77394] Radeon R9 270X GPU lockup on power profile change

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https://bugs.freedesktop.org/show_bug.cgi?id=77394

--- Comment #16 from nine@detonation.org ---
Today I finally made decent progress on this issue. I can confirm that the GPU
lockups are not the X server's fault, since they appear also when using weston
and indeed, when running the eglkms Mesa demo on the pure framebuffer.

Trying to find the exact OpenGL call that causes the lockup, I discovered, that
when I change the power profile before starting any GL program (Mesa demo or
display server), it continues to work until the next reboot. So all that was
needed was a
echo low > /sys/class/drm/card0/device/power_profile
executed before starting the X server and I could change power profile at
runtime.

I then turned on dpm again and indeed:
echo high > /sys/class/drm/card0/device/power_dpm_force_performance_level
echo auto > /sys/class/drm/card0/device/power_dpm_force_performance_level
called by an ExecStartPre script from the display-server service file fixes the
issue completely for me and I have now a fully working dpm :)

So it seems like the first change of performance level/profile initializes
something that must be initialized before the first GL call or CRTC change for
power management to be stable. Any idea what this something might be?

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[Bug 77394] Radeon R9 270X GPU lockup on power profile change

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https://bugs.freedesktop.org/show_bug.cgi?id=77394

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

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

--- Comment #17 from Martin Peres <martin.peres@free.fr> ---
-- 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/drm/amd/issues/488.

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