Stephen Gran on 23 Aug 2006 22:47:20 -0000


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Re: [PLUG] when /dev/dsp goes away


On Wed, Aug 23, 2006 at 06:17:36PM -0400, Jeff Abrahamson said:
> A machine on which sound used to work now has no /dev/dsp.  (Needless
> to say, I can't play sound.)  The machine still has the same sound
> card.
> And a slew of sound-related stuff has loaded:
> 
>     kypton:~ $ grep snd /proc/modules 
>     snd_emu10k1 97156 1 - Live 0xe09f0000
>     snd_rawmidi 22240 1 snd_emu10k1, Live 0xe09cc000
>     snd_seq_device 7916 2 snd_emu10k1,snd_rawmidi, Live 0xe0964000
>     snd_ac97_codec 82464 1 snd_emu10k1, Live 0xe09a1000
>     snd_pcm 77576 2 snd_emu10k1,snd_ac97_codec, Live 0xe09b8000
>     snd_timer 21316 2 snd_emu10k1,snd_pcm, Live 0xe096c000
>     snd_ac97_bus 2048 1 snd_ac97_codec, Live 0xe08c9000
>     snd_page_alloc 9928 2 snd_emu10k1,snd_pcm, Live 0xe08cd000
>     snd_util_mem 4256 1 snd_emu10k1, Live 0xe0951000
>     snd_hwdep 8384 1 snd_emu10k1, Live 0xe08d5000
>     snd 48420 9 snd_emu10k1,snd_rawmidi,snd_seq_device,snd_ac97_codec,snd_pcm,snd_timer,snd_hwdep, Live 0xe0937000
>     soundcore 8928 2 sound,snd, Live 0xe08d1000
>     jeff@krypton:~ $ 

I don't see snd_pcm_oss or snd_mixer_oss on that list.  I think that the
way all this works in recent kernels is that the module loading creates
the potential for the device to exist, and then udev scurries off and
creates the device node.  No module, not potential, no node.
-- 
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|  Stephen Gran                  | We are all born mad.  Some remain so.   |
|  steve@lobefin.net             | -- Samuel Beckett                       |
|  http://www.lobefin.net/~steve |                                         |
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