USB Audio Devices "disabling" onboard sound cards
Mikkel L. Ellertson
mikkel at infinity-ltd.com
Mon Jul 30 04:06:13 UTC 2007
Sean Bruno wrote:
> I purchased a USB Turntable(Bus 001 Device 002: ID 08bb:2900 Texas
> Instruments Japan) and rebooted my machine.
>
> Lo and behold, I no longer have access to my sound card(00:04.0
> Multimedia audio controller: nVidia Corporation CK804 AC'97 Audio
> Controller (rev a2)). It is not even listed in system-config-soundcard.
>
> If I disconnect the USB Turntable and reboot, my audio device becomes
> available again.
>
> Taking a look at my modprobe.conf shows an oddity:
> options snd cards_limit=8
> alias snd-card-0 snd-intel8x0
> options snd-usb-audio index=0
> options snd-card-0 index=0
> options snd-intel8x0 index=0
>
> The snd-intel8x0 is aliased to snd-card-0, but it doesn't appear. Quite
> strange indeed.
>
> Seems like a minor bug here as the same thing happens with my USB
> headset and my USB webcam(it has a microphone in it).
>
> Any ideas?
>
> Sean
>
>
Try changing
options snd-usb-audio index=0
to
options snd-usb-audio index=1
Run depmod after making the change, and try plugging in your USB
sound card again.
Mikkel
--
Do not meddle in the affairs of dragons,
for thou art crunchy and taste good with Ketchup!
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