[alsa-devel] seg fault with 1.0.17rc2

[Takashi Iwai]

At Thu, 26 Jun 2008 12:03:24 -0400,
Jerry Geis wrote:
> 
> 
> 
> Takashi Iwai wrote:
> > At Thu, 26 Jun 2008 10:38:57 -0400,
> > Jerry Geis wrote:
> >   
> >> #0  0xb7e892ff in memcpy () from /lib/tls/libc.so.6
> >> #1  0xb74e40a9 in snd_pcm_area_copy (dst_area=0xb7125b70, dst_offset=0, 
> >> src_area=0x81dc1c0, src_offset=170, samples=0, 
> >> format=SND_PCM_FORMAT_S16_LE) at pcm.c:2589
> >>     
> >
> > samples = 0 and...
> >
> >   
> >> #2  0xb74e438d in snd_pcm_areas_copy (dst_areas=0xb7125b7c, 
> >> dst_offset=0, src_areas=0x81dc1cc, src_offset=170, channels=1, 
> >> frames=122, format=SND_PCM_FORMAT_S16_LE) at pcm.c:2736
> >>     
> >
> > ... here frames = 122.  Something inconsistent around here.
> > snd_pcm_areas_copy() must passe samples=frames when channels=1.
> > Could you check the values via gdb?
> >
> >
> > Takashi
> >
> >   
> Takashi,
> 
> I am not sure what your asking me. The output I provided is gdb what else
> can I check? Really anxious to get this USB sound device playing 
> consistantly.

Check whether frames still 122 in frame#1, for example.

> Is there a better asound.conf to use?

The strange thing is that the recent config for usb-audio also uses
dmix/dsnoop.  And you don't get any errors with the system-default
config?


Takashi