Re: [Alsa-user] pcm.duplicate/pcm.ch51dup causing cracling noises

[Lutz R. <lu....@gm...>]

join the club ;)
i own a cs46xx board with only 4.0 surround, but i have/had the same 
problems

i mirror front to rear using pdm.ch40dup
for mp3 i use jackd to get no lags between front and rear with xmms.
when u use jackd you have to set the frames per period to 512 using -p 512
when i use amarok it is a bit different(without jackd), when there a lag 
appears the cpu usage goes up to 100% until this lag is over, but in 
amarok the lags don't appear as often as in xmms
i'm not satisfied with this solutions but i don't find any better

here it is interesting when i watch dvds with xine: when output is set 
to surround40 a lag also appears between front and rear

against the noise try to set "DAC" in alsamixer to 50% - 75%, with 100% 
i get noise

it's sad to see that even my onboard card has better drivers