How to disable a USB camera
Daniel Ulfe
danielulfe at gmail.com
Wed Sep 8 20:15:37 UTC 2004
Hello again. searching in redhat bugzilla I found what was my problem.
This webcam has a mic integrated that is detected as a USB sound
card0. Sound card in motherboard was card1. and mixer doen't work
properly. To force motherboard card like card0 I must add a options
line for sound module in /etc/modprobe.conf like this:
alias snd-card-0 snd-intel8x0
options snd-intel8x0 index=0
# NOTE: snd-inte8x0 is my sound-card module
alias snd-card-1 snd-usb-audio
options snd-usb-audio index=1
afther reboot sound works properly and cat /proc/asound/cards is like:
0 [ICH5 ]: ICH - Intel ICH5
Intel ICH5 at 0xfa301000, irq 201
1 [U0x46d0x8b2 ]: USB-Audio - USB Device 0x46d:0x8b2
USB Device 0x46d:0x8b2 at usb-0000:00:1d.7-4.1, full speed
On Wed, 8 Sep 2004 19:48:13 +0200, Daniel Ulfe <danielulfe at gmail.com> wrote:
> Hello everybody. I have a dual boot windows XP/Fedora Core 2 installed
> in a Pentium 4 HT machine and all works properly in FC2 except
> Logitech QuickCam Pro 4000 attached to USB2.0 port and soud card. When
> I boot FC2 with CAM not attached, soud works properly, but when I boot
> whit CAM attached soud doen't work. In this situation I start
> system-config-soundcard and after press test buttom I have followin
> message:
>
> amixer: Unable to find simple control 'Master',0
>
> amixer: Unable to find simple control 'PCM',0
>
> sox: Can't open output file '/dev/dsp': No such device
>
> I not want to use CAM in FC2. How to disable USB CAM without detach
> USB port in order to sondcard works properly?
>
> Any Idea?
>
> Regards
>
> Daniel
>
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