Gentoo Archives: gentoo-user

From: Indi <thebeelzebubtrigger@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Still haveing problems with audio and guvcview
Date: Sat, 04 Jun 2011 11:48:57
Message-Id: 20110604114721.GB4200@gaurahari.merseine.nu
1 On Sat, Jun 04, 2011 at 11:30:01AM +0200, Mick wrote:
2 > On Friday 03 Jun 2011 21:10:29 meino.cramer@×××.de wrote:
3 >
4 > > When i start alsamixer and select with the "soundcard"-selector
5 > > the audio device of my usb cam ... alsamixer crashes with:
6 > >
7 > > cannot load mixer controls: Invalid argument
8 > >
9 > >
10 > > ...still no sound via usb cam and it seems no chance to use alsamixer
11 > > with it...damn...this /had/ worked and I dont know what it kills...
12 > >
13 > > mylinux:/home/user>aplay -l
14 > > **** List of PLAYBACK Hardware Devices ****
15 > > card 0: SB [HDA ATI SB], device 0: VT2020 Analog [VT2020 Analog]
16 > > Subdevices: 2/2
17 > > Subdevice #0: subdevice #0
18 > > Subdevice #1: subdevice #1
19 > > card 0: SB [HDA ATI SB], device 1: VT2020 Digital [VT2020 Digital]
20 > > Subdevices: 2/2
21 > > Subdevice #0: subdevice #0
22 > > Subdevice #1: subdevice #1
23 >
24 > Your camera's sound card is not shown here (stating the obvious).
25 >
26 > Have you tried building it as a module and modprobe -v <driver> to see what
27 > messages you get?
28 >
29 > > mylinux:/home/user>arecord -l
30 > > **** List of CAPTURE Hardware Devices ****
31 > > card 0: SB [HDA ATI SB], device 0: VT2020 Analog [VT2020 Analog]
32 > > Subdevices: 2/2
33 > > Subdevice #0: subdevice #0
34 > > Subdevice #1: subdevice #1
35 > > card 1: CameraB404271 [USB Camera-B4.04.27.1], device 0: USB Audio [USB
36 > > Audio] Subdevices: 1/1
37 > > Subdevice #0: subdevice #0
38 > [snip...]
39 >
40 >
41 >
42 > > !!Loaded ALSA modules
43 > > !!-------------------
44 > >
45 > >
46 > >
47 >
48 > I would suggest that you build alsa as modules at least for troubleshooting
49 > purposes. I had to do that in the past to get things working in a box,
50 > following the recommendation of the devs.
51 >
52
53 I second that. For years I built the ALSA drivers into the kernel, but
54 for some reason that started giving me trouble some months back and
55 after switching to using modules instead it's back to being a carefree
56 setup.
57
58 --
59 caveat utilitor
60 ♫ ❤ ♫ ❤ ♫ ❤ ♫ ❤