On Mon, 2014-02-03 at 08:45 -0800, pe...@easthope.ca wrote: > Now I have /dev/USBspeakers and /dev/USBheadset, and wonder whether > ALSA can recognize /dev/USBspeakers rather than "SiS7012 AC'97 > Sound Controller" as the default device. > > http://wiki.debian.org/ALSA mentions "indexes" and /dev/dsp. > No other /dev mentioned. ALSA indexes predate udev; correct? > > http://www.tldp.org/HOWTO/Alsa-sound-6.html mentions /dev/snd/*. > No mention of making a specific /dev/snd/ the default. > > Does anyone have a way of configuring a specific /dev as default?
This is how my Arch's alsa-base.conf looks like: [rocketmouse@archlinux ~]$ cat /etc/modprobe.d/alsa-base.conf # ALSA module ordering options snd slots=snd_hdspm,snd_ice1712,snd_ice1712 The HDSP is the default device hw:0, the both ICE1712 cards are hw:1 and hw:2. If I unload the ICE1712 driver and connect USB audio devices those device anyway will become hw:3, hw:4 etc.. A demonstration: [rocketmouse@archlinux ~]$ hdspmixer Card 0: RME AIO S/N 0x579bcc at 0xfddf0000, irq 18 Card 1: TerraTec EWX24/96 at 0xbf00, irq 20 Card 2: TerraTec EWX24/96 at 0xbb00, irq 21 Card 3: USB Device 0x170b:0x11 at usb-0000:00:13.0-2, full speed Card 4: KORG INC. nanoKONTROL at usb-0000:00:13.3-1, full speed [rocketmouse@archlinux ~]$ sudo modprobe -r snd_ice1712 [rocketmouse@archlinux ~]$ hdspmixer Card 0: RME AIO S/N 0x579bcc at 0xfddf0000, irq 18 Card 3: USB Device 0x170b:0x11 at usb-0000:00:13.0-2, full speed Card 4: KORG INC. nanoKONTROL at usb-0000:00:13.3-1, full speed Even if I unplug and reconnect an USB device it never will become hw:1 or hw:2. IOW you need to use options snd slots=snd_usb_audio to make an USB device always hw:0. Using this method hw:0 will be reserved for USB audio, even if no USB audio is connected to the machine. The index method is obsolet. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/1391458342.812.28.camel@archlinux
