On Wed, 10 Apr 2002 16:20:48 -0400 (EDT)
Victor Danilchenko <[EMAIL PROTECTED]> wrote:
> Hi,
> We have an P4 i850 system here, and the built-in sound device is
> being used. It was causing instability under default Linux sound
> drivers, so I installed ALSA (driver intel8x0). It works, but the sound
> is accellerated -- everything sounds like it's recoded by Alvin & The
> Chipmunks (whether you try .wav, .mp3, or a number of other formats).
> Any ideas?
>
> Now I know that i850 chipset isn't listed in the soundcard
> matrix as supported; but it's supposed to be backwards compatible with
> i840, and it actually does work... just the weird playback speed issue.
>
> The relevant part of my /etc/modules.conf looks like this:
>
> # ALSA portion
> alias char-major-116 snd
> alias snd-card-0 snd-intel8x0
> # OSS/Free portion
> alias char-major-14 soundcore
> alias sound-slot-0 snd-card-0
> alias sound-service-0-0 snd-mixer-oss
> alias sound-service-0-1 snd-seq-oss
> alias sound-service-0-3 snd-pcm-oss
> alias sound-service-0-8 snd-seq-oss
> alias sound-service-0-12 snd-pcm-oss
>
> The OS is RedHat Linux 7.2, kernel 2.4.9-21.
>
> The relevant section of /proc/pci:
>
> Bus 0, device 31, function 5:
> Multimedia audio controller: Intel Corporation 82801BA(M) AC'97 Audio (rev 4).
> IRQ 10.
> I/O at 0xd800 [0xd8ff].
> I/O at 0xdc40 [0xdc7f].
>
>
>
> Any ideas on how to fix this most annoying problem, or if it's a
> hardware support issue, what is the expected timeframe for the driver
> fix?
>
> Many thanks in advance,
>From the ALSA INSTALL file for 0.9.0beta12:
Module snd-intel8x0.o
---------------------
Module for AC'97 motherboards from Intel.
* Intel i810/810E, i815, i820, i830, i840, MX440
* SiS 7012 (SiS 735)
* NVidia NForce
snd_ac97_clock - AC'97 codec clock base (0 = auto-detect)
Module supports autoprobe and multiple bus-master chips (max 8).
Note: the latest driver supports auto-detection of chip clock.
if you still encounter too fast playback, specify the clock
explicitly via the module option "snd_ac97_clock=41194".
HTH,
-Frans
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