Gentoo Archives: gentoo-user

From: Hung Dang <hungptit@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] AMD hdaudio: why do I have two audio devices and two mixers?
Date: Fri, 30 Mar 2012 01:39:48
Message-Id: 4F750E70.4050102@gmail.com
In Reply to: [gentoo-user] AMD hdaudio: why do I have two audio devices and two mixers? by walt
1 On 03/29/2012 09:18 PM, walt wrote:
2 > Fresh gentoo install on new lenovo desktop. Both linux and win7
3 > (lenovo installed) tell me that this machine has two audio devices:
4 >
5 > 00:01.1 Audio device: Advanced Micro Devices [AMD] nee ATI BeaverCreek HDMI Audio [Radeon HD 6500D and 6400G-6600G series]
6 > Subsystem: Lenovo Device 3625
7 > Kernel driver in use: snd_hda_intel
8 > Kernel modules: snd-hda-intel
9 >
10 > 00:14.2 Audio device: Advanced Micro Devices [AMD] Hudson Azalia Controller (rev 01)
11 > Subsystem: Lenovo Device 3625
12 > Kernel driver in use: snd_hda_intel
13 > Kernel modules: snd-hda-intel
14 >
15 > crw-rw----+ 1 root audio 14, 0 Mar 29 18:07 /dev/mixer
16 > crw-rw----+ 1 root audio 14, 16 Mar 29 18:07 /dev/mixer1
17 >
18 > crw-rw----+ 1 root audio 116, 3 Mar 29 18:07 controlC0
19 > crw-rw----+ 1 root audio 116, 7 Mar 29 18:07 controlC1
20 > crw-rw----+ 1 root audio 116, 2 Mar 29 18:07 pcmC0D3p
21 > crw-rw----+ 1 root audio 116, 6 Mar 29 18:07 pcmC1D0c
22 > crw-rw----+ 1 root audio 116, 5 Mar 29 18:07 pcmC1D0p
23 > crw-rw----+ 1 root audio 116, 4 Mar 29 18:07 pcmC1D2c
24 > crw-rw----+ 1 root audio 116, 33 Mar 29 18:07 timer
25 >
26 > lrwxrwxrwx 1 root root 12 Mar 29 18:07 pci-0000:00:01.1 -> ../controlC0
27 > lrwxrwxrwx 1 root root 12 Mar 29 18:07 pci-0000:00:14.2 -> ../controlC1
28 >
29 >
30 > I spent an entire frustrating day discovering that the reason I
31 > have no sound is that every app wants to use /dev/mixer when only
32 > /dev/mixer1 actually works :(
33 >
34 > Only some apps (like audacious) will let me choose which mixer to
35 > use, and those apps work perfectly.
36 >
37 > Anyone else seen this before, I hope? Got a fix?
38 >
39 > Thanks :)
40 I guess the second audio device is either HDMI or HD audio generic. You
41 could verify this by opening alsamixer then select F6 to see a list of
42 audio devices. If you use pulseaudio then you can select the default
43 output device. Or use /etc/asound.conf to select your preferred default
44 device.
45
46 Hung

Replies

Subject Author
Re: [gentoo-user] AMD hdaudio: why do I have two audio devices and two mixers? Michael Mol <mikemol@×××××.com>