Bug#428270: libopenal0a: sound is badly distorted on intel audio using alsa

Cyril Brulebois cyril.brulebois at enst-bretagne.fr
Sun Jun 10 10:52:34 UTC 2007


Paul Wise <pabs at debian.org> (10/06/2007):
> So, is this would be a kernel/udev problem?

I guess so, although I'm absolutely no kernel expert. Maybe a bad
default driver, dunno.

> Well, the card works correctly with other apps (rhythmbox/etc, just
> not in openal-based apps.

It might have to do with some options missing, but if only openal-based
applications have this problem...

> How would I check these things?

In the kernel sources, check sound/pci/hda/, the mapping is apparently
(at least in my case) this way:

$ grep MCP51 -r .
./hda_intel.c:  { 0x10de, 0x026c, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP51 */

$ grep 0x10de -r .
./patch_analog.c:    SND_PCI_QUIRK(0x10de, 0xcb84, "ASUS A8N-VM", AD1986A_3STACK),

And this mapping wasn't present in 2.6.18. If such a mapping exists for
your card, I guess that your problem has nothing to do with a bad driver
mapping, at most with a missing option.

Cheers,

-- 
Cyril Brulebois
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