27 Oct
2008
27 Oct
'08
6:52 a.m.
Cassiel wrote:
Hi Fernando,
I confirm midi is working with 2.6.26-8 on debian lenny but jackd
freezes trying to stop when with snd_seq. (DLs state in the output of
`ps -ax`).
I didn't test the other alternatives (not a midi fan... simple user) but
I am going to and feedback to this thread.
(am i the only one to be aware of this?)
midi is seriously broken on 2.6.26-rt, specially when driven outboard;
events delivered out of time if at all, outrageous jitter and
unpredictable drop outs; internally sequenced material (eg. queueing
events to a softsynth) might work barely but that is just little comfort.
note that this badness applies to PREEMPT_RT kernels >= 2.6.26, vanilla
is fine afaict.
all that trouble seems to be related to a regression in 2.6.26-rc2 that
just made the bkl non preemptible anymore, leaving the -rt people with a
herculean task to comply--look after Ingo Molnar's "Kill the BKL" tree
for news...
cheers
--
rncbc aka Rui Nuno Capela
rncbc(a)rncbc.org