[linux-audio-dev] dmix and jack

[James Courtier-Dutton]

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.

James