On Mon, 8 Mar 2004, Clemens Ladisch wrote:

> "audio" is the OSS driver for USB audio devices.  As long as that one
> is loaded, you won't be able to use /dev/dsp0, /dev/mixer0 etc. for
> ALSA's OSS emulation.
> 
> Use snd-usb-audio instead.  If your system automatically loads audio,
> put it into the /etc/hotplug/blacklist file.

Thanks for the suggestion--the problem does indeed seem to be a conflict
with the usb microphone on my camera.  When I boot without my usb camera
connected, then Alsa OSS emulation and native Alsa both work perfectly
again!  All is not well though:  when I boot with the usb camera connected
and audio in /etc/hotplug/blacklist as you suggest, then snd-usb-audio
does load automatically, but for some reason Alsa does not load for the
sound card!  Very odd.  I have to do manually do "/etc/rc.d/init.d/alsa
restart" to get Alsa going.

Thanks again Clemens, you've isolated the initial problem.  If you have
any further suggestions as to why Alsa no longer starts automatically with
audio blacklisted I'd like to hear them!

Rich



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