[fritsch]

I will push my current kernel with all the "in between works" to my github in a minute, if that helps.

You find a howto branch and an experimental branch

[chemstar]

@fritsch
hi,
on my saucy installation xbmc is crashing on livetv (vnsi).
edit:
new logs will follow!

[fritsch]

#0 0x00007f9dcead5782 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#1 0x00007f9d7d3081d5 in vlVdpDecoderRender () from /usr/lib/vdpau/libvdpau_r600.so.1
#2 0x0000000000880707 in VDPAU::CDecoder::FFDrawSlice(AVCodecContext*, AVFrame const*, int*, int, int, int) ()

Nice - Something deep down in the vdpau implementation of mesa. Will look again tomorrow. Your installation looks fine though (despite the pulseaudio server, but this is not causing that issue).

Vnsi is my primary usecase. Did not get an issue yet.

Ah! Please install libg3dvl-mesa-dbg and let it crash again.

[chemstar]

vnsi is connected to openelec machine running last dev builds

[fritsch]

Does this only happen with mpeg-2?

[chemstar]

have downloaded some samples and yes it seems that only mpeg-2 is affected.
even this local played file (http://www.snapstream.com/images/enterpr...s/best.mpg) causes a crash

hd channels are played well!

[fritsch]

That file works perfectly for me. Can you post your xbmc.log with that one again? It is mpeg-2 29.97i

[chemstar]

here it is http://paste.ubuntu.com/6345814/

[riker77]

I will push my current kernel with all the "in between works" to my github in a minute, if that helps.

You find a howto branch and an experimental branch

Thanks Fritsch. Really appreciate your effort.

[fritsch]

@chemstar: It seems like an upstream bug for me. Please head over to freedesktop and file it there with all the logs you got. Thanks much.

[fritsch]

@chemstar: I talked with upstream.

Please sudo apt-get install libgl1-mesa-dri-dbg and let it crash again.

11:03 < zgreg> fritsch: unfortunately the stack trace doesn't tell much because r600_dri.so was installed without debug symbols
11:04 < fritsch> though, you know how it comes further after the decode.c
11:05 < fritsch> it should return something !VDPAStatusOK
11:06 < fritsch> zgreg: libgl1-mesa-dri-dbg <- should help?
11:06 < zgreg> probably, I don't use packages for this purpose
11:07 < fritsch> oki - that reporter is just a normal user
11:07 < fritsch> so i want to make it easy for him
11:07 < fritsch> he posted a sample, thta causes it for him: http://www.snapstream.com/images/enterpr...s/best.mpg)
11:11 < zgreg> does the user have old hw?
11:11 < zgreg> i.e. mpeg2 software decoding is used?
11:12 < fritsch> http://paste.ubuntu.com/6345814/
11:12 < fritsch> phenom with Gallium 0.4 on AMD JUNIPER
11:13 < zgreg> ah, missed that
11:14 < zgreg> well AFAICT juniper is UVD 2.2, so it uses shader-based mpeg2 decoding
11:14 < fritsch> mmh vdpauinfo showed all the h264 codecs
11:14 < zgreg> so that's probably where the problem is
11:14 < fritsch> he sadly removed his logs
11:15 < fritsch> with vdpauinfo and dmesg
11:15 < zgreg> yes, UVD 2.2 supports H.264 but not MPEG-2
11:15 < zgreg> which means, UVD will be used for H.264/VC-1, but MPEG-2 falls back to shader based decoding
11:16 < fritsch> ah okay
11:16 < fritsch> is it okay, when I quote you?
11:17 < zgreg> yes

Grigori had a look. Seems your Juniper falls back to Shaders for mpeg-2. Worth filing on the bugtracker of course.

[chemstar]

@fritsch

sorry for removing the logs but had to make some changes.

xbmc_crash -> http://paste.ubuntu.com/6346593/

dmesg -> http://paste.ubuntu.com/6346598/
xorg -> http://paste.ubuntu.com/6346600/
vdpauinfo -> http://paste.ubuntu.com/6346602/
mesa -> http://paste.ubuntu.com/6346608/

[fritsch]

Thanks for those files:

13:19 < ckoenig> fritsch: yeah that's now wonder the shader based mpeg2 was
never thread save
13:19 < fritsch> anything we can do on xbmc side?
13:20 < fritsch> (without killing a lot of performance?)
13:20 < fritsch> we are in mixer, output, decoder
13:21 < fritsch> the state btw. looks odd
13:21 < fritsch> 0xffffffffffffffff
13:22 < ckoenig> fritsch: nothing you could do, let me take a look how tricky
it is to make the shader based mpeg2 decoder thread save

Oki - thx again. It is in good hands now.

[chemstar]

thanks fritsch!
it is great to see that something is happening

[fritsch]

Small additional note:

xbmc Merge Window has just started and a lot of stuff went in now. There are currently big issues. Wait a bit with updates until all has settled.