[linux-audio-user] JACK and ALSA can't use Delta 44, but OSS emulation through ALSA can

[Jack O'Quin]

Alan Taylor <alan-linuxaudiouser at lowb.org> writes:

> I'm having an issue getting sound out of my Delta 44.  As root I can use
> JACK in RT mode to play to both my on-board soundcard and my Delta 44.
> As a user in the audio group, I can use JACK in RT mode to play to my
> on-board soundcard, but not my Delta 44.


> 22:17:00.735 /usr/bin/jackd -R -dalsa -dhw:0 -r48000 -p1024 -n2 -i2 -o2
> 22:17:00.742 JACK was started with PID=19234 (0x4b22).
> jackd 0.99.0

> The error seems to point to the channel count, but whether I specify 2
> or the proper number, which is 4, it makes no difference.  Permissions
> and ownership:group in /dev/sound and /dev/snd appear to be fine.

Try leaving off -i and -o completely.  Internally, the chip has 10
inputs and 12 outputs, although the card only has 4 and 4.  Just allow
JACK to use them all.  It shouldn't hurt anything.

-- 
  joq