[alsa-devel] 'node->type == SND_CONFIG_TYPE_COMPOUND' failed

[Takashi Iwai]

At Mon, 12 Jan 2009 17:51:11 +0100,
Michael Hirsch wrote:
> 
> Hello,
> 
> Takashi Iwai wrote:
> >> kernel version matches the user space library and utils version.
> >>
> >> searching the archives / google brings no result.
> >>
> >> We tried with an empty alsa.conf but then the message:
> >>
> >> ALSA lib pcm.c:2144:(snd_pcm_open_noupdate) Unknown PCM default
> >> aplay: main:564: audio open error: No such file or directory
> >>
> >> appears. However the card shows up /proc/asound/cards and alsamixer is 
> >> able to access it.
> >>
> >> Any ideas?
> > 
> > Try a newer version of alsa-lib.  Possibly fixed, or give you a better
> > error message.  At least, this bad "assert" should be gone now.
> 
> isn't it an obligation to keep version of user space and kernel in sync?

alsa-lib keeps the backward compatibility.  A newer alsa-lib works
with an older kernel.  If not, it's a bug :)


Takashi