Subject: Re: [LAU] jackd process can't be killed

From: Adam Sampson <ats@...> · Date: Tuesday, December 30, 2008 - 8:42 pm

"R Dicaire"  writes:
> I'm running Debian Lenny on a custom 2.6.26.8-rt12 kernel. I notice

quoted text> once jackd starts, it cannot be killed. kill -9 leaves the jackd

> process in state DLs

> Running jackd -R -P70 -dalsa -dhw:0 -r44100 -p128 -n2 -Xseq

> I get same behaviour from kernel 2.6.26.6-rt11.
This looks like the 2.6.26 MIDI sequencer problem -- MIDI doesn't work,

and after jackd has opened the sequencer device for the first time,

it'll hang trying to close it. Future attempts to open the sequencer

device then fail because it's in use.
I've gone back to 2.6.24 for now, but as I recall, if you don't care

about MIDI, you can start jackd with -Xraw (or with no -X option) and

it'll still do audio happily.
It'd be really nice to have a fix for this, since 2.6.24 occasionally

locks up for me when I've got realtime stuff running (whereas 2.6.26 is

admirably well-behaved aside from the complete lack of MIDI). Does

anyone know whether MIDI's working again in the new RT tree?
--

Adam Sampson

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