Gentoo Archives: gentoo-user

From: Grant <emailgrant@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Switch between sound cards?
Date: Sun, 24 Feb 2008 19:34:44
Message-Id: 49bf44f10802241134y75a8d01bhb7e1a231232caab5@mail.gmail.com
In Reply to: Re: [gentoo-user] Switch between sound cards? by Mark Knecht
1 > > I have a USB sound card and an internal sound card in my laptop. Is
2 > > there a way to switch between them while the system is booted? Is
3 > > module loading/unloading via modprobe the best way to do it?
4 > >
5 > > - Grant
6 > > --
7 > > gentoo-user@l.g.o mailing list
8 > >
9 > >
10 >
11 > Why switch between them when you can use them both at the same time as
12 > hw:0 and hw:1?
13
14 Thanks Mark. After studying your config, here is mine:
15
16 alias snd-card-0 snd-hda-intel
17 options snd-hda-intel index=1
18 options snd-hda-intel model=acer
19
20 alias snd-card-1 snd-usb-audio
21 options snd-usb-audio index=0
22
23 alias sound-slot-0 snd-card-0
24 alias sound-slot-1 snd-card-1
25
26 alias /dev/mixer snd-mixer-oss
27 alias /dev/dsp snd-pcm-oss
28 alias /dev/midi snd-seq-oss
29
30 options snd cards_limit=2
31
32 I get sound from the USB card but not from the internal card
33 (snd-hda-intel). How can I tell the system to turn off the USB card
34 and turn on the internal card?
35
36 - Grant
37
38
39 > # Alsa 0.9.X kernel modules' configuration file.
40 > # $Header: /var/cvsroot/gentoo-x86/media-sound/alsa-utils/files/alsa-modules.conf-rc,v
41 > 1.4 2004/11/16 01:31:22 eradicator Exp $
42 >
43 > # ALSA portion
44 > alias char-major-116 snd
45 >
46 > # OSS/Free portion
47 > alias char-major-14 soundcore
48 >
49 > ## ALSA portion
50 > alias snd-card-0 snd-intel8x0
51 > options snd-intel8x0 index=0
52 > alias snd-card-1 snd-hdsp
53 > options snd-hdsp index=1
54 >
55 > ## OSS/Free portion
56 > alias sound-slot-0 snd-card-0
57 >
58 >
59 > # OSS/Free portion - card #1
60 > alias sound-service-0-0 snd-mixer-oss
61 > alias sound-service-0-1 snd-seq-oss
62 > alias sound-service-0-3 snd-pcm-oss
63 > alias sound-service-0-8 snd-seq-oss
64 > alias sound-service-0-12 snd-pcm-oss
65 >
66 > alias /dev/mixer snd-mixer-oss
67 > alias /dev/dsp snd-pcm-oss
68 > alias /dev/midi snd-seq-oss
69 >
70 > # Set this to the correct number of cards.
71 > options snd cards_limit=2
72 > mark@lightning ~ $
73 --
74 gentoo-user@l.g.o mailing list

Replies

Subject Author
Re: [gentoo-user] Switch between sound cards? Florian Philipp <lists@××××××××××××××××××.net>
Re: [gentoo-user] Switch between sound cards? Mark Knecht <markknecht@×××××.com>