[mythtv-users] snd-via82xx sound garbled

[Thomas Fjellstrom]

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.
>
> Second, when playing back TV recorded with MythTV, the sound/video have
> the same garbled/out-of-sync problem after ~10 minutes of playback.  I
> haven't been able to reproduce/refute this issue with the 2.4 kernel
> driver, b/c MythTV needs full-duplex, and I don't think that the kernel
> driver likes that ;).  If I stop and restart the playback, the problem
> disappears for ~10 minutes.
>
> The only suggestion that I've found from the lists in the past is trying
> to use the dxs_support option with the snd-via82xx driver.  I've tried
> both dxs_support=2 and =3, but neither has worked.  The soundcard is on
> the motherboard (ECS K7VTA3 version 8.0).

I don't have the same motherboard, but I had the same symptoms, I needed to do 
dxs_support=4. That fixed all my problems. (I also get 4 concurrent streams 
with my via82xx audio, through oss emu and/or alsa.)

> Thanks in advance for your help.
>
> -adam

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