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Thursday, 27 April 2006


I upgraded my machine last night and it decided it didn’t like the look of hotplug anymore installing udev instead.

Fine. I can be brave.

Rebooting and hoping for the best all seemed well. Until I noticed that /dev/dsp wasn’t recreated.

My working system had the following modules loaded:

i810_audio             31028  0
ac97_codec             17004  1 i810_audio
soundcore               8672  2 snd,i810_audio

The system has an SIS audio system:

0000:00:02.7 Multimedia audio controller: Silicon Integrated Systems [SiS] Sound Controller (rev a0)

So how do I persuade udev to use this?

Right now I have no /dev/dsp device.

If I manually install some modules I can make the dsp device appear – but surely I shouldn’t have to do that?

root@itchy:~# ls /dev/dsp
ls: /dev/dsp: No such file or directory
root@itchy:~# modprobe  snd_intel8x0  snd_pcm
root@itchy:~# modprobe snd_pcm_oss
root@itchy:~# modprobe snd_intel8x0
root@itchy:~# ls /dev/dsp
root@itchy:~# ls /dev/dsp -l
crw-rw---- 1 root audio 14, 3 Apr 27 10:26 /dev/dsp

(Obviously if this is what I’m supposed to do I can add the module names to /etc/modules – it just seems strange to me!)

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