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Old 04-10-2007, 03:32 PM   #1
1337_penguin
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Registered: Jul 2005
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/dev/audio, /dev/dsp and /dev/mixer missing in Debian Etch


Hi

I recently did a clean install of Debian Etch after running Sarge for ages, and discovered whilst configuring MPD that /dev/audio, /dev/dsp and /dev/mixer all appear to be missing, however checking with lspci and lsmod shows that the sound card is detected and the modules are being loaded:

Code:
roxy:/home/ownage# lspci
00:00.0 Host bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (rev 03)
00:01.0 PCI bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX AGP bridge (rev 03)
00:04.0 Multimedia audio controller: Cirrus Logic CS 4614/22/24 [CrystalClear SoundFusion Audio Accelerator] (rev 01)
00:07.0 ISA bridge: Intel Corporation 82371AB/EB/MB PIIX4 ISA (rev 02)
00:07.1 IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01)
00:07.2 USB Controller: Intel Corporation 82371AB/EB/MB PIIX4 USB (rev 01)
00:07.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 02)
00:10.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
01:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA G200 AGP (rev 03)
roxy:/home/ownage#
Code:
roxy:/home/ownage# lsmod
Module                  Size  Used by
ipv6                  226016  12
button                  6672  0
ac                      5188  0
battery                 9636  0
dm_snapshot            15552  0
dm_mirror              19152  0
dm_mod                 50232  2 dm_snapshot,dm_mirror
loop                   15048  0
parport_pc             32132  0
parport                33256  1 parport_pc
floppy                 53156  0
rtc                    12372  0
serio_raw               6660  0
snd_cs46xx             76360  0
psmouse                35016  0
gameport               14632  2 snd_cs46xx
snd_rawmidi            22560  1 snd_cs46xx
snd_seq_device          7820  1 snd_rawmidi
snd_ac97_codec         83104  1 snd_cs46xx
snd_ac97_bus            2400  1 snd_ac97_codec
i2c_piix4               8140  0
snd_pcm                68676  2 snd_cs46xx,snd_ac97_codec
i2c_core               19680  1 i2c_piix4
pcspkr                  3072  0
snd_timer              20996  1 snd_pcm
snd                    47012  6 snd_cs46xx,snd_rawmidi,snd_seq_device,snd_ac97_codec,snd_pcm,snd_timer
soundcore               9248  1 snd
snd_page_alloc          9640  2 snd_cs46xx,snd_pcm
intel_agp              21148  1
agpgart                29896  1 intel_agp
shpchp                 33024  0
pci_hotplug            28704  1 shpchp
evdev                   9088  0
ext3                  119240  1
jbd                    52456  1 ext3
mbcache                 8356  1 ext3
ide_disk               14848  3
8139cp                 21920  0
generic                 5476  0 [permanent]
uhci_hcd               21164  0
8139too                25120  0
mii                     5344  2 8139cp,8139too
usbcore               112644  2 uhci_hcd
piix                    9444  0 [permanent]
ide_core              110504  3 ide_disk,generic,piix
thermal                13608  0
processor              28840  1 thermal
fan                     4804  0
roxy:/home/ownage#
As far as I can tell everything else seems to be as it should (in Sarge the sound just worked), except that the files are missing.

Thanks in advance.

1337_penguin

Last edited by 1337_penguin; 04-10-2007 at 03:34 PM.
 
Old 04-10-2007, 06:23 PM   #2
igorc
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Registered: May 2005
Location: Sydney, Australia
Distribution: Ubuntu 5.04, Debian 3.1
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Hi,

Are there any sound errors in the dmesg command output? You can also try loading this module which I think is missing:

# modprobe snd-pcm-oss

and see if there are any devices created in /dev/snd. Also try running alsamixer and amixer to see what kind of output you get. You can also run alsaconf as root and see if your card gets recognized correctly.

Another thing I can think of is if you don't have the /dev/snd/* device nodes, download the alsa-driver tarball and run the snddevices shell script.

Cheers,
 
Old 04-11-2007, 11:33 AM   #3
1337_penguin
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Registered: Jul 2005
Location: Brighton, UK
Distribution: Mainly Debian and Mepis, but also Slackware, Arch and Mandriva
Posts: 73

Original Poster
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Loading the snd-pcm-oss module created /dev/audio, /dev/dsp and /dev/mixer, after which I was able to use rexima to adjust the volume and stuff. /dev/snd contained the following files anyway:

Code:
roxy:/home/ownage# ls -l /dev/snd
total 0
crw-rw---- 1 root audio 116,  0 2007-04-10 20:43 controlC0
crw-rw---- 1 root audio 116,  8 2007-04-10 20:43 midiC0D0
crw-rw---- 1 root audio 116, 24 2007-04-10 20:43 pcmC0D0c
crw-rw---- 1 root audio 116, 16 2007-04-10 20:43 pcmC0D0p
crw-rw---- 1 root audio 116, 17 2007-04-10 20:43 pcmC0D1p
crw-rw---- 1 root audio 116, 18 2007-04-10 20:43 pcmC0D2p
crw-rw---- 1 root audio 116, 33 2007-04-10 20:43 timer
roxy:/home/ownage#
Despite this, there was still no sound, so I changed the permissions on /dev/audio, dsp and mixer from 660 to 666, which didn't help either. I finally installed alsa-utils to get alsaconf and, after running it, the sound's now working.

Thanks for the advice.

1337_penguin
 
  


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