Re: usb-audio

[Takashi Iwai <tiwai@suse.de>]

At Tue, 28 Oct 2003 13:42:15 +0100,
Niklas Werner wrote:
> 
> [1  <text/plain; us-ascii (7bit)>]
> Am Dienstag, 28. Oktober 2003 13:13 wurde geschrieben:
> > At Tue, 28 Oct 2003 12:48:17 +0100,
> >
> > Niklas Werner wrote:
> > > Am Dienstag, 28. Oktober 2003 12:10 schrieb Takashi Iwai:
> > > > > No, I don't think it is.
> > > > > I get similar problems with my emi 2|6 and alsaplayer, mplayer,
> > > > > xmms, ...
> > > >
> > > > did you use plughw instead of hw in all cases?
> > > > otherwise they won't work always.
> > >
> > > plughw doesn't work at all!
> >
> > for xmms, too?
> oops, sorry, forgot. xmms works! except for adjusting the PCM-Volume, such 
> is life... (this works on Intel, btw)

i don't know your emi26 device has PCM volume.
if not, assign another existing control in the config of alsa-xmms
plugin.

> Is there any special trick regarding the ctl.* for plughw?

it has nothing to do with plughw abstraction.
it's the difference of hardware.

> alsa-xmms is probably the newest one, I am using gentoo... i tried using 
> diefferent mixer-card settings, but none did work.
> >
> > to be sure, try to start mplayer on gdb and check what is broken.
> > tracing via strace woule help, too.
> gdb:
> 
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread 16384 (LWP 28218)]
> 0x0fd47d64 in snd_pcm_linear_convert () from /usr/lib/libasound.so.2
> (gdb) bt
> #0  0x0fd47d64 in snd_pcm_linear_convert () from /usr/lib/libasound.so.2
> #1  0x0fd47b00 in snd_pcm_linear_convert () from /usr/lib/libasound.so.2
> #2  0x0fd4643c in snd_pcm_plugin_write_areas () from /usr/lib/
> libasound.so.2
> #3  0x0fd3ce54 in snd_pcm_write_areas () from /usr/lib/libasound.so.2
> #4  0x0fd467bc in snd_pcm_plugin_writei () from /usr/lib/libasound.so.2
> #5  0x0fd3615c in snd_pcm_writei () from /usr/lib/libasound.so.2
> #6  0x10078718 in outputaudio ()
> #7  0x1007837c in outputaudio ()
> #8  0x1002ed74 in main ()

hmm, then something wrong in the converter routine...
needs to take a deeper look.


Takashi


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