Re: sound driver
On Thu, Nov 18, 2004 at 11:51:22AM -0700, Justin Guerin wrote:
> Sounds like you have a DMA or IRQ problem. Can you check which DMA and IRQ
> channels are assigned during Knoppix boot, and during Debian boot? You may
> have to tell the sound module to use a specific IRQ when it's loaded. I
> had to do the same thing with my ISA card, when I first configured it. I
> just went down the list of available IRQs before I got to one that worked.
Did some reading on the subject. The Sound How-To confirms your suspicisions:
Another symptom is sound samples that loop. This is usually caused
by an IRQ conflict.
The Boot Prompt How-To has information on boot arguments, but they
don't seem to work. I tried both "sound=22" and "snd-via82xx=22"
(after making sure I had alsa-modules-2.4.27-1-686 installed), but the
card gets configured with IRQ 18. Here's the dmesg output:
Via 686a/8233/8235 audio driver 1.9.1-ac3
via82cxxx: Six channel audio available
PCI: Setting latency timer of device 00:11.5 to 64
ac97_codec: AC97 Audio codec, id: VIA97 (Unknown)
via82cxxx: board #1 at 0xE000, IRQ 18
jrennie@desk:~$ cat /proc/cmdline
root=/dev/hdb2 ro snd-via82xx=22
Any ideas what else I should try?
Many thanks,
Jason
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