Andreas,
The woody debian package is using an older version of the alsa-drivers...
this is the version info given:
0.9+0beta12-3
I'll grab the CVS and install that instead before I start fiddling with
that function, although what you are saying does make sense... that
driver seems to have changed substantially in the newer versions.
For the record, /proc/interrupts, and I'm using 2.4.18 with no low latency
patch and I'm not using a sound server:
plinth:/home/nelf# cat /proc/interrupts
CPU0
0: 2927254 XT-PIC timer
1: 2 XT-PIC keyboard
2: 0 XT-PIC cascade
8: 3 XT-PIC rtc
10: 0 XT-PIC usb-uhci
11: 3457 XT-PIC usb-uhci, eth0
12: 0 XT-PIC usb-uhci, i82365
14: 11060 XT-PIC ide0
NMI: 0
ERR: 0
Iain
On Mon, 10 Mar 2003, Andreas Mohr wrote:
> Hi,
>
> On Sun, Mar 09, 2003 at 03:19:07PM -0800, [EMAIL PROTECTED] wrote:
> > Message: 1
> > Date: Sun, 9 Mar 2003 22:42:44 +0000 (GMT)
> > From: Iain Kennedy <[EMAIL PROTECTED]>
> > Reply-To: [EMAIL PROTECTED]
> > To: [EMAIL PROTECTED]
> > Subject: [Alsa-user] VIA8233 Debian Woody Intermittent PCM Distortion
> >
> > Hello,
> >
> > I've installed debian and it's alsa packages just fine on my Via EPIA
> > mainboard, and configured it according to the instructions from the alsa
> > website. I have intermittent distortion when using the PCM. About 80% of
> > the time when I use mpg123 to play tunes, there is a crackling distortion.
> > It varies in intensity from attempt to attempt. Occasionally it is
> > absolutely crystal clear. The distortion never comes and goes within a
> > particular command.
> >
> > I've tried using xmms to play the MP3's, and if the distortion is there
> > for one tune, it is there for all tunes for the entire session. If it
> > isn't there, then it will be fine until I quit xmms and start again.
> Hmm, that just sounds like
> alsa/alsa-kernel/pci/via82xx.c/snd_via686_playback_prepare() might be the culprit,
> since the initial sound format preparation
> seems to fail somehow.
> Could you perhaps fiddle with that function a bit?
> (e.g. changing snd_ac97_set_rate() and via686_setup_format() invocation,
> adding some udelay()s, trying to initialize it twice, reordering sound
> preparation steps etc.)
> Or maybe the problem resides in snd_via82xx_pcm_open(), but that function
> is much less interesting.
>
> > Does anybody have any ideas about this.. I can send further information on
> > my configuration if necessary.. I've tacked on my modules etc below.
> But you're lacking /proc/interrupts output :-\
>
> --
> Andreas Mohr Stauferstr. 6, D-71272 Renningen, Germany
> Tel. +49 7159 800604 http://mohr.de.tt
>
>
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