On Wed, 13 Mar 2002, Paul Davis wrote:

> so, you all know jack, i'm sure.
> 
> when jack is used with a "plug" PCM device, we end up with duplicated
> channel data even on a 2 channel device. using mmap access, everything
> we write to the channel area for channel 0 shows up on both channel 0
> and channel 1. i don't understand how this could happen. any clues on
> what i should start looking for? my first guess is that the channel
> addresses supplied for mmap access are wrong/duplicated (i haven't
> tried debugging yet).

Please, could you call 'snd_pcm_dump()' after initialization of 
parameters and show me result? I need to know plugin details to help you.

                                                Jaroslav

-----
Jaroslav Kysela <[EMAIL PROTECTED]>
Linux Kernel Sound Maintainer
ALSA Project  http://www.alsa-project.org
SuSE Linux    http://www.suse.com


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