[mythtv-users] snd-via82xx sound garbled

[Thomas Fjellstrom]

On December 15, 2003 01:25 pm, Darrick Hartman wrote:
> > On December 14, 2003 10:22 pm, Adam C. Brown wrote:
> > > I'm using the ALSA 1.0rc2 drivers along with
> >
> > MythTV, however I've run into
> >
> > > two sound problems:
> > >
> > > First, when I play a DVD, the sound (and video)
> >
> > tend to 'jump' and sound
> >
> > > 'garbled'.  I don't run into this problem when I
> >
> > use the kernel driver for
> >
> > > 2.4.23 (via82cxxx_audio), that is, the sound and
> >
> > video are perfectly
> >
> > > synced and don't make the popping/jumping noises.
>
> If you're using ALSA, direct your output to adsp
> instead of dsp.  That should help.  If you're using

Ohh, I totally forgot about that, if you do set the dxs_support option to one 
of the surround or other type of multichannel sound, you HAVE to use adsp. 
What I've gathered from the ALSA guys is there are two "functions" on the 
chip, the mutichannel dxs stuff, and the plain 2 channel 44100 ac97 audio. 
The dxs sound is always adsp... Which odly enough should probably have been 
dsp1 or something if ALSA were really OSS compatible ;)

> the OSS kernel driver from later 2.4 series kernels
> (2.4.22+), several Alan Cox patches have been
> incorporated which get rid of the problems.  I forget
> the exact issues but I recall having them on when I
> first started using the EPIA-M boards.
>
> Darrick


-- 
Thomas Fjellstrom
tfjellstrom at strangesoft.net
http://strangesoft.net