[linux-audio-dev] dmix and jack

[Paul Davis]

On Mon, 2006-01-30 at 20:05 +0000, James Courtier-Dutton wrote:
> voidcreature at paradise.net.nz wrote:
> > Has anyone managed to successfully get jackd talking to dmix?
> > 
> > My dmix setup works fix (i run VoIP stuff, artsd, and other assorted junk 
> > through it daily).
> > 
> > jackd works great when connect to hw:0,0 or to plughw:0,0 (with the warning), 
> > but if I point it at my dmix'd "default"  it sits there with 100% CPU usage, 
> > and doesn't otherwise operate.
> > 
> > Does anyone have this combination of jack and dmix working?
> > 
> 
> It is due to the fact that the alsa programming in jackd has been 
> implemented wrongly. The poll revents are not handled correctly.
> This results is OK operation when using hw:0,0, but likely to fail for 
> more exotic alsa configurations like dmix.

i will happily take a patch for this. or is it just the MMAP_COMPLEX
patch and nothing more?

--p