Problem mit mehreren Soundkarten.

HDA ATI SB Realtek ALC889A
Logitech Quickcam

USB Webcam wird immer als Device 0 und somit als Standardaudiogerät erkannt

michael@gentux ~ $ cat /proc/asound/modules
0 snd_usb_audio
1 snd_hda_intel
2 snd_hda_intel

Lösung: Datei /etc/modprobe.d/sound.conf anlegen und USB Device auf einen “hinteren” Platz verschieben

michael@gentux ~ $ cat /etc/modprobe.d/sound.conf
# List of audio devices and the way they should be loaded, to get rid of USB-Webcam becoming the default device
options snd_usb_audio index=2

reboot!

michael@gentux ~ $ cat /proc/asound/modules
0 snd_hda_intel
1 snd_hda_intel
2 snd_usb_audio

Soundcarte und Codec identifizieren: tuxbox modprobe.d # head -n 1 /proc/asound/card*/codec#0

Codec: Realtek ALC889A

Codec: ATI R6xx HDMI

Liste der Models für die Karte:

ALSA-Configuration.txt HD-Audio.txt

ALC882/883/885/888/889

3stack-dig    3-jack with SPDIF I/O
6stack-dig    6-jack digital with SPDIF I/O
arima         Arima W820Di1
targa         Targa T8, MSI-1049 T8
asus-a7j      ASUS A7J
asus-a7m      ASUS A7M
macpro        MacPro support
mb5           Macbook 5,1
macmini3      Macmini 3,1
mba21         Macbook Air 2,1
mbp3          Macbook Pro rev3
imac24        iMac 24'' with jack detection
imac91        iMac 9,1
w2jc          ASUS W2JC
3stack-2ch-dig        3-jack with SPDIF I/O (ALC883)
alc883-6stack-dig     6-jack digital with SPDIF I/O (ALC883)
3stack-6ch    3-jack 6-channel
3stack-6ch-dig 3-jack 6-channel with SPDIF I/O
6stack-dig-demo  6-jack digital for Intel demo board
acer          Acer laptops (Travelmate 3012WTMi, Aspire 5600, etc)
acer-aspire   Acer Aspire 9810
acer-aspire-4930g Acer Aspire 4930G
acer-aspire-6530g Acer Aspire 6530G
acer-aspire-7730g Acer Aspire 7730G
acer-aspire-8930g Acer Aspire 8930G
medion        Medion Laptops
medion-md2    Medion MD2
targa-dig     Targa/MSI
targa-2ch-dig Targa/MSI with 2-channel
targa-8ch-dig Targa/MSI with 8-channel (MSI GX620)
laptop-eapd   3-jack with SPDIF I/O and EAPD (Clevo M540JE, M550JE)
lenovo-101e   Lenovo 101E
lenovo-nb0763 Lenovo NB0763
lenovo-ms7195-dig Lenovo MS7195
lenovo-sky    Lenovo Sky
haier-w66     Haier W66
3stack-hp     HP machines with 3stack (Lucknow, Samba boards)
6stack-dell   Dell machines with 6stack (Inspiron 530)
mitac         Mitac 8252D
clevo-m540r   Clevo M540R (6ch + digital)
clevo-m720    Clevo M720 laptop series
fujitsu-pi2515 Fujitsu AMILO Pi2515
fujitsu-xa3530 Fujitsu AMILO XA3530
3stack-6ch-intel Intel DG33* boards
intel-alc889a Intel IbexPeak with ALC889A
intel-x58     Intel DX58 with ALC889
asus-p5q      ASUS P5Q-EM boards
mb31          MacBook 3,1
sony-vaio-tt  Sony VAIO TT
auto          auto-config reading BIOS (default)