Public bug reported:
The file contains the lines:
# Prevent abnormal drivers from grabbing index 0
options snd-usb-audio index=-2
and yet snd-usb-audio grabs index 0, when snd-hda-intel should have been
allowed to.
This problem has only started since I started attaching TWO devices
which use the snd-usb-audio driver. Also, one of them is a webcam; I
don't know if that somehow gets around the setting for the audio driver.
ProblemType: Bug
Architecture: i386
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/dsp2', '/dev/dsp1',
'/dev/dsp', '/dev/snd/controlC2', '/dev/snd/pcmC2D0p', '/dev/snd/pcmC2D0c',
'/dev/snd/pcmC1D0c', '/dev/snd/by-id', '/dev/snd/controlC1',
'/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0',
'/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D1p',
'/dev/snd/pcmC0D1c', '/dev/snd/seq', '/dev/snd/timer', '/dev/sequencer',
'/dev/sequencer2'] failed with exit code 1:
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0x90440000 irq 22'
Mixer name : 'SigmaTel STAC9221 A1'
Components : 'HDA:83847680,106b0800,00103601'
Controls : 19
Simple ctrls : 11
Card1.Amixer.info:
Card hw:1 'camera'/'USB camera at usb-0000:00:1d.1-1, full speed'
Mixer name : 'USB Mixer'
Components : 'USB045e:00f7'
Controls : 3
Simple ctrls : 2
Card2.Amixer.info:
Card hw:2 'default'/'C-Media USB Headphone Set at usb-0000:00:1d.2-1, full
speed'
Mixer name : 'USB Mixer'
Components : 'USB0d8c:000c'
Controls : 7
Simple ctrls : 3
Date: Mon Nov 16 23:14:11 2009
DistroRelease: Ubuntu 9.10
NonfreeKernelModules: snd_usb_audio snd_hda_intel aes_i586 aes_generic
usb_storage binfmt_misc ppdev lp parport bridge stp bnep vboxnetadp vboxnetflt
vboxdrv uinput usblp snd_hda_codec_idt arc4 ecb snd_hda_codec snd_pcm_oss
snd_mixer_oss btusb applesmc snd_usb_lib snd_pcm ath5k snd_seq_dummy pl2303
gspca_sonixj gspca_main snd_seq_oss nls_iso8859_1 videodev v4l1_compat mac80211
usbserial snd_seq_midi snd_seq_midi_event led_class iptable_filter ath
nls_cp437 snd_seq asix usbnet ip_tables x_tables snd_rawmidi snd_timer
snd_seq_device snd_hwdep mii cfg80211 input_polldev snd soundcore
snd_page_alloc vfat fat reiserfs usbhid fbcon tileblit font bitblit softcursor
ohci1394 i915 ieee1394 drm i2c_algo_bit video output sky2 intel_agp agpgart
Package: alsa-base 1.0.20+dfsg-1ubuntu5
PackageArchitecture: all
ProcEnviron:
SHELL=/bin/bash
PATH=(custom, user)
LANG=en_GB.UTF-8
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: alsa-driver
Uname: Linux 2.6.31-14-generic i686
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386
--
usb audio driver can still be loaded first despite settings in
/etc/modprobe.d/alsa-base.conf
https://bugs.launchpad.net/bugs/483889
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