Re: Configuring dual sound modules
From: Clemens Ladisch (clemens_at_ladisch.de)
Date: 09/16/03
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Date: Tue, 16 Sep 2003 13:47:12 +0200
Jaideep wrote:
> - When I boot-up the machine with the USB webcam connected, the sound
> server fails to start. Because the webcam has a built-in mic, it
> appears that the kernel loads the "audio.o" module for the webcam.
> But this seems to override the "es1371.o" module as the sound server,
> resulting in no sound being available on my machine.
When the USB host controller driver is loaded, the hotplug mechanism
automatically loads the drivers for all connected devices. This
happens before the init scripts try to load the sound drivers, so
audio.o will load first in this case. To prevent this, you can either
- add audio to /etc/hotplug/blacklist to prevent it from being loaded
automatically; or
- add a pre-install line to modules.conf to force es1371 to be loaded
before audio; or
- use ALSA where you can tell each driver at which index to load.
HTH
Clemens
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