* Rainer Dorsch <m...@bokomoko.de> [2014-04-06 11:00 +0200]: > Hi, > > I have two usb devices on my system, which register with the snd_usb_audio > module, a USB Headset and a USB webcam (has a microphone built-in). I use > > options snd-usb-audio index=-2 > > in modprobe.d to keep the usb devices away from card index 0, since I want to > be snd_hda_intel the default.
Sounds somewhat different than in your bugreport. > That works well as long as I do not plug in the USB webcam. If I plug in the > USB webcam, the webcam grabs card index 0. > > Does anybody understand why that is? > > Here are some more detailed data (the usb device asr both from Logitech): > > blackbox:~# lsusb > Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub > Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub > Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub > Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub > Bus 001 Device 006: ID 046d:0825 Logitech, Inc. Webcam C270 > Bus 001 Device 005: ID 046d:0a44 Logitech, Inc. > Bus 001 Device 004: ID 04b4:6560 Cypress Semiconductor Corp. CY7C65640 > USB-2.0 > "TetraHub" > Bus 001 Device 003: ID 0781:5567 SanDisk Corp. Cruzer Blade > Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub > Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub > Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub > Bus 003 Device 002: ID 046d:c05b Logitech, Inc. M-U0004 810-001317 [B110 > Optical USB Mouse] > Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub > blackbox:~# cat /proc/asound/cards > 0 [U0x46d0x825 ]: USB-Audio - USB Device 0x46d:0x825 > USB Device 0x46d:0x825 at usb-0000:00:1a.7-5.4, high > speed > 1 [Headset ]: USB-Audio - Logitech USB Headset > Logitech Logitech USB Headset at usb-0000:00:1a.7-5.1, > full speed > 2 [Intel ]: HDA-Intel - HDA Intel > HDA Intel at 0xfe7f4000 irq 45 > blackbox:~# cat /proc/asound/modules > 0 snd_usb_audio > 1 snd_usb_audio > 2 snd_hda_intel Create as root a file /etc/modprobe.d/alsa_local.conf: ### options snd slots=snd-hda-intel options snd-usb-audio index=1,2 vid=0x46d,0x46d pid=0xa44,0x825 ### This should preserve the first soundslot for your intel card. Your headset (ID 046d:0a44) will become index 1 and your webcam (ID 046d:0825) index 2 though. See http://alsa.opensrc.org/MultipleCards Elimar -- The path to source is always uphill! -unknown- -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/20140406120918.ga18...@galadriel.home.lxtec.de
