13 Jul
2005
13 Jul
'05
11:03 a.m.
On Wed, Jul 13, 2005 at 08:39:53 -0400, Brett McCoy wrote:
Last night I was setting up a session in Ardour. I
had three tracks for
keyboard parts that were from imported audio files, so they did not have
any input ports set. I wanted to bring in drum parts from Hydrogen, and
started setting up tracks to correspond with the tracks I was using in
Hydrogen. I got maybe 3 or 4 tracks set up, with the correct inputs,
and then suddenly Ardour kept telling me that I was out of jack ports
and needed to reset jack. What is this? I had used maybe 4 stereo
ports total. My sound card has 12 in/10 out (but I was wasn't using
them), and Hydrogen presented 32 stereo tracks via Jack, and I was no
where near the limit. I looked at my jack settings via qjackctl and it
was set for 128 ports (assuming this is the same thing).
back of the envelope maths:
soundcard ports are always assigned,
even if theres nothing connected: 22
hydrogen, 32*2: 64
ardour uses something like 4 per mono track,
plus 2 more? 34
so thats getting to 120ish, so you could easily have run out.
After I restarted jackd (and not making any changes in
qjackctl),
Hydrogen refused to start (it would segfault on startup, but if I
started Hydrogen without jackd it would startup fine), and when I
reopened the same session in Ardour, the entire screen would freeze
(except the mouse).
Thats not good, and I dont know why its doing tht offhand, it could be
because theres some stale files or pipes in your jack tmp directory?
strace-ing or gdb-ing hydrogen might give a clue.
- Steve