[Bug 71796] New: Hardware assisted (VDPAU) decoding of MPEG-2 causes GPU lockup - Radeon HD6950

[Bug 71796] New: Hardware assisted (VDPAU) decoding of MPEG-2 causes GPU lockup - Radeon HD6950

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=71796

          Priority: medium
            Bug ID: 71796
          Assignee: dri-devel@lists.freedesktop.org
           Summary: Hardware assisted (VDPAU) decoding of MPEG-2 causes
                    GPU lockup - Radeon HD6950
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: libgradev@gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: git
         Component: Drivers/DRI/R600
           Product: Mesa

Created attachment 89477
  --> https://bugs.freedesktop.org/attachment.cgi?id=89477&action=edit
DMESG output showing hardware info and lockup.

Playing back MPEG-2 compressed video causes a GPU lockup and reset. This
happens about 9 times out of 10 upon start of playback - the other time
playback starts fine.

About 4 out of 5 times the reset is successful and playback begins a catchup
phase before continuing normally - otherwise it results in a complete system
freeze.

If playback actually starts it continues fine.

Using VDPAU assisted playback via XBMC. Using software only playback works fine
every time. h264 playback seems unaffected.

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[Bug 71796] Hardware assisted (VDPAU) decoding of MPEG-2 causes GPU lockup - Radeon HD6950

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https://bugs.freedesktop.org/show_bug.cgi?id=71796

--- Comment #1 from Universam@gmx.de ---
Same GPU lockup with [AMD/ATI] Caicos [Radeon HD 6450] which has UVD3. Happens
upon start of playback of mpeg-2 files, 90% chance of lockup. On some files it
seems better, on other worse. Maybe some frame errors are causing this.

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[Bug 71796] Hardware assisted (VDPAU) decoding of MPEG-2 causes GPU lockup - Radeon HD6950

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https://bugs.freedesktop.org/show_bug.cgi?id=71796

--- Comment #2 from Universam@gmx.de ---
Created attachment 89653
  --> https://bugs.freedesktop.org/attachment.cgi?id=89653&action=edit
DMESG output

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[Bug 71796] Hardware assisted (VDPAU) decoding of MPEG-2 causes GPU lockup - Radeon HD6950

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https://bugs.freedesktop.org/show_bug.cgi?id=71796

--- Comment #3 from Lee Donaghy <lee295012@gmail.com> ---
Getting the same problem with mpeg2 on my E350.

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[Bug 71796] Hardware assisted (VDPAU) decoding of MPEG-2 causes GPU lockup - Radeon HD6950

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https://bugs.freedesktop.org/show_bug.cgi?id=71796

--- Comment #4 from Lee Donaghy <lee295012@gmail.com> ---
Created attachment 89679
  --> https://bugs.freedesktop.org/attachment.cgi?id=89679&action=edit
dmesg

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[Bug 71796] Hardware assisted (VDPAU) decoding of MPEG-2 causes GPU lockup - Radeon HD6950

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https://bugs.freedesktop.org/show_bug.cgi?id=71796

--- Comment #5 from dubsides <paul.whitesides@gmail.com> ---
I would like to report same issue, though mine is Radeon 4550. (UVD2.2)

lockup on every attempt with vdpau enabled, these are high bitrate ota
broadcast recordings played through xbmc cmyth plugin on ubuntu 13.10

I've attached dmesg, will try directly playing files when I get back, but
imagine same result.

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[Bug 71796] Hardware assisted (VDPAU) decoding of MPEG-2 causes GPU lockup - Radeon HD6950

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--- Comment #6 from dubsides <paul.whitesides@gmail.com> ---
actually isn't a lockup of gpu, but crashes program(xbmc) out

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[Bug 71796] Hardware assisted (VDPAU) decoding of MPEG-2 causes GPU lockup - Radeon HD6950

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--- Comment #7 from dubsides <paul.whitesides@gmail.com> ---
Created attachment 89698
  --> https://bugs.freedesktop.org/attachment.cgi?id=89698&action=edit
radeon 4550 dmesg

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[Bug 71796] Hardware assisted (VDPAU) decoding of MPEG-2 causes GPU lockup - Radeon HD6950

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https://bugs.freedesktop.org/show_bug.cgi?id=71796

libgradev@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Drivers/DRI/R600            |Drivers/Gallium/r600

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[Bug 71796] Hardware assisted (VDPAU) decoding of MPEG-2 causes GPU lockup - Radeon HD6950

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https://bugs.freedesktop.org/show_bug.cgi?id=71796

--- Comment #8 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
You may have a look at bug 69775. It was reported as fixed by this patch:
[PATCH] drm/radeon: fix typo in fetching mpll params 
http://lists.freedesktop.org/archives/dri-devel/2013-November/049425.html

The patch has not been merged yet, but should be soon.

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https://bugs.freedesktop.org/show_bug.cgi?id=71796

--- Comment #9 from libgradev@gmail.com ---
Thanks.

I have tried that patch in a kernel build kindly supplied by fritsch
(https://github.com/fritsch/linux/commits/master) but the issue still remains -
no improvement.

I also built Mesa and the 2D driver from master late yesterday - still locks.

Please let me know if I can test anything else!

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--- Comment #10 from Rachel Greenham <rachel@strangenoises.org> ---
Also getting the same problem using fritch's build here
https://github.com/fritsch/linux that has that patch, on ubuntu saucy with xbmc
using vdpau. Card in this instance is a radeon HD 7750.

The surviving dmesg.0 and syslog from that session doesn't show any information
related to the crash. If anything it crashed the system more thoroughly and
quickly than the mainline kernels, requiring a reset-button press to recover.

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[Bug 71796] Hardware assisted (VDPAU) decoding of MPEG-2 causes GPU lockup - Radeon HD6950

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--- Comment #11 from Kertesz Laszlo <laszlo.kertesz@gmail.com> ---
Created attachment 90478
  --> https://bugs.freedesktop.org/attachment.cgi?id=90478&action=edit
dmesg file showing GPU resets with mplayer on A8-5500

I have a A8-5500 with 7560D igp (Debian Testing 64 bit with Xfce 4.10) and
mesa, drm, llvm, glamor and kernel from latest git with the agd5f
drm-fixes-3.13 merged - playing a certain mpeg2 clip with xbmc sends the GPU
into a reset loop (i managed to get to tty1 and do a killall -9 xbmc.bin, but i
had to restart because the resets continued and tty7 gave no video signal at
all.
Playing the same clip with mplayer shows green garbled image and after 3 tries
(started playback, let it run for a few seconds, stopped) it did reset the gpu
too only i was able to killall -9 mplayer from tty1 and after that one more gpu
reset happened then the x server recovered.

I had some dvds laying around and those had no issues and downloaded other
mpeg2 clips too and those too worked fine with vdpau decoding, but with this
particular clip vdpau messed stuff up badly.

I found a link for the clip here:
https://github.com/xbmc/xbmc/pull/399

This is the direct download link, its a mpeg2 clip, around 20MB:
http://www.mediafire.com/?4dvvwj5aw2esv49

Attached dmesg from the mplayer session.

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--- Comment #12 from Andy Furniss <adf.lists@gmail.com> ---
(In reply to comment #11)

> I had some dvds laying around and those had no issues and downloaded other
> mpeg2 clips too and those too worked fine with vdpau decoding, but with this
> particular clip vdpau messed stuff up badly.
> 
> I found a link for the clip here:
> https://github.com/xbmc/xbmc/pull/399
> 
> This is the direct download link, its a mpeg2 clip, around 20MB:
> http://www.mediafire.com/?4dvvwj5aw2esv49

I think this file is exceptional and so it not working is probably unrelated to
whatever issue others are seeing.

It doesn't work because vdpau doesn't support field coded mpeg2. I guess
because it is very rare - other than compliance streams this is the first one
I've seen in the wild, and given it's mpeg2 in mkv with ac3 and the cartoon
content is a mix of progressive and interlaced (maybe from telecine and frame
rate converted) I don't know if it's an amateur creation or something "real".

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--- Comment #13 from Kertesz Laszlo <laszlo.kertesz@gmail.com> ---
> I think this file is exceptional and so it not working is probably unrelated
> to whatever issue others are seeing.
> 
> It doesn't work because vdpau doesn't support field coded mpeg2. I guess
> because it is very rare - other than compliance streams this is the first
> one I've seen in the wild, and given it's mpeg2 in mkv with ac3 and the
> cartoon content is a mix of progressive and interlaced (maybe from telecine
> and frame rate converted) I don't know if it's an amateur creation or
> something "real".

The problem here is that a movie playback can mess up your session because the
driver cannot cope with an exception caused by a specific video format. This
should not happen in any circumstances.

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--- Comment #14 from Andy Furniss <adf.lists@gmail.com> ---
(In reply to comment #6)
> actually isn't a lockup of gpu, but crashes program(xbmc) out

Yea, XBMC crashes on me if I enable VDPAU - and my card (HD4890) doesn't have
UVD so it's also crashing trying to use shaders for mpeg2 (which work with
mplayer -vc ffmpeg12vdpau)

I wonder if others having the UVD lockups can also provoke them using mplayer
-vc ffmpeg12vdpau

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[Bug 71796] Hardware assisted (VDPAU) decoding of MPEG-2 causes GPU lockup - Radeon HD6950

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--- Comment #15 from Andy Furniss <adf.lists@gmail.com> ---
(In reply to comment #13)
> > I think this file is exceptional and so it not working is probably unrelated
> > to whatever issue others are seeing.
> > 
> > It doesn't work because vdpau doesn't support field coded mpeg2. I guess
> > because it is very rare - other than compliance streams this is the first
> > one I've seen in the wild, and given it's mpeg2 in mkv with ac3 and the
> > cartoon content is a mix of progressive and interlaced (maybe from telecine
> > and frame rate converted) I don't know if it's an amateur creation or
> > something "real".
> 
> The problem here is that a movie playback can mess up your session because
> the driver cannot cope with an exception caused by a specific video format.
> This should not happen in any circumstances.

I agree with you - I wasn't saying it didn't need fixing WRT to GPU lockups,
just trying to add some info.

It may be that the lock will be fixed by making UVD more resilient, but the
file still won't play properly because it's unsupported - at least you'll know
why.

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--- Comment #16 from Kertesz Laszlo <laszlo.kertesz@gmail.com> ---
Interesting.
I tried again and the system hang on the first frames with mplayer. The only
thing i could do was to use the sysrq combination to restart.

Then i recompiled mesa without llvm and i played it a few times in a row with
both mplayer and xbmc and didnt crash. It was a green slideshow but didnt
crash.

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GitLab Migration User <gitlab-migration@fdo.invalid> changed:

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

--- Comment #17 from GitLab Migration User <gitlab-migration@fdo.invalid> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
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You can subscribe and participate further through the new bug through this link
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