Re: I am now totally confused about modules
bsamuels <bsamuels@datamansys.co.uk> writes:
BS> I have also noticed the follow errors in the log when I play a CD:
BS>
BS> Aug 22 10:45:56 modprobe: modprobe: Can't locate module sound-slot-0
BS> Aug 22 10:45:56 modprobe: modprobe: Can't locate module sound-service-0-3
Hmm, that's odd. (Those messages would be produced by the 'soundcore'
module loading.)
BS> I am using the Emu drivers for my Sound Blaster Live 1024 Player
BS> and see the following in the logs after booting:
BS>
BS> Aug 22 10:52:09 kernel: Creative EMU10K1 PCI Audio Driver, version 0.6,
BS> 10:37:10 Aug 22 2000
BS> Aug 22 10:52:09 kernel: emu10k1: EMU10K1 rev 8 model 0x8027 found, IO at
BS> 0x6800-0x681f, IRQ 12
Most likely the modules are listed in /etc/modules, and are loaded by
the system explicitly at boot time (rather than at runtime by the
module autoloader).
BS> If I unload the sound modules manually they do not show in the
BS> list produced by lsmod but if I play a CD sound still works!!!
Sure. <shrug> On PCs, the audio output from the CD-ROM gets tied
directly into the sound card, goes through the sound card's mixer, and
gets fed to the audio output. This is all in hardware; the normal
software sound card driver is completely irrelevant for playing CDs.
(For that matter, it's entirely possible that your CD-ROM drive has a
headphone jack on the front; you could disconnect the CD-ROM from your
sound card and still have audio CD functionality work normally.)
BS> I have now run out of ideas. I'm mystified why sound should work
BS> whether or not the sound/emu modules are loaded.
Have you tried actual "sound" (as opposed to CD audio)? Try, for
example, finding a .au file, and catting it to /dev/audio. Do you get
output then?
--
David Maze dmaze@mit.edu http://www.mit.edu/~dmaze/
"Theoretical politics is interesting. Politicking should be illegal."
-- Abra Mitchell
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