[Mplayer-users] gdb with vo null

Tony Clark tclark at telia.com
Mon Aug 6 02:27:02 CEST 2001

On Monday 06 August 2001 01:18, you wrote:
> Hi,
> > AO: [oss] 48000Hz Stereo Signed 16-bit (Little-Endian)
> > AO: Description: OSS/ioctl audio output
> > AO: Author: A'rpi
> > ao2: 48000 Hz  2 chans  Signed 16-bit (Little-Endian)
> > audio_setup: using '/dev/dsp' dsp device
> > audio_setup: sample format: Signed 16-bit (Little-Endian) (requested:
> > Signed 16-bit (Little-Endian))
> > audio_setup: using 48000 Hz samplerate (requested: 48000)
> > audio_setup: frags:   2/2  (65536 bytes/frag)  free: 131072
>                         ^^^
> Why do you use OSS emulation with alsa-0.5 ???
> it's written in docs that it's broken. use -ao alsa5 or upgrade
> alsa to 0.9.x, or use real OSS driver.

The docs say 0.9x is buggy not 0.5x.  I actually don't know why it is using 
OSS emulation.  All I can guess is that I have setup OSS emulation and it is 
choosing that over the native alsa driver.  I'll try the swtich to force it 
to use alsa5.

> btw i'm sure in that your Xv driver is broken, because an user-space
> program shouldn't get system crashing...  and it works with -vo null and
> plays audio (with a known broken driver combination :)) without crashing.
It crashes using fbdev, it also crashes with -vo null.  I'm just trying vo 
null and -aid 128...seems better

> we can't help with this, please do not flood this list with more useless
> logs. contact Xfree guys, or try nvidia's binary driver or use -vo x11.
-vo x11 also crashes.  I haven't tried the nvidia drivers..will give that a 
blast tomorrow.

> maybe your system is too fast, and the linux driver is unstable at agp 4x.
> (just like my matrox g400).
I can't really comment, except to say I have never seen any sort of video 
instability with any other app.  Xine runs fine.  I'll try a few other video 
apps and see if they have problems.

> > EOF code: 2
> >
> > Exiting... (End of file)
> > max framesize was 191176 bytes
> >
> > Program exited with code 01.
> > (gdb) bt
> > No stack.
> > (gdb) disass $eip-32 $eip+32
> > No registers.
> So, as you see, it played stream up to the end, without any crash.

No it didn't, it played about 2 minutes into the stream then exited!
It just exited again with eof, but it is a long way from eof!  I copied the 
dvd over to my hard disk to rule out the dvd drive.  It did go for a lot 
longer with -aid 128.  I can't help feeling reiserfs has something to do with 
all of this.

Tony Clark
ASIC, FGPA and Digital Design
+46 702 894 667

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