Audacity is somewhat of a broken joke these days, so I needed to use Ardour to record. And that meant setting up JACK. Since JACK insists on exclusivity, I also needed to route pulseaudio through JACK so I could use other apps at the same time. Unfortunately, this is a bit of a pig to figure out. I hacked it as follows:
First edit /etc/pulse/default.pa, you need to add two lines:
load-module module-jack-sink
load-module module-jack-source
In theory now, a restart of pulseaudio should start using JACK for recording and playback, if jackd is running. However, it tends not to work very well: you might find PA hanging and you have to kill -9 it.
This isn't enough of course, now when you log in again, gnome-session will try to start pulseaudio, but not jackd, so nothing works. It's far from the right way, but I edited /usr/bin/start-pulseaudio-x11 (which is started from a /etc/xdg/autostart/ script), as follows:
amixer -c 0 sset 'Input Source' 'Line'
nohup jackd -d alsa &
sleep 5
/usr/bin/pulseaudio --start "$@"
Note that I have to set the input source by hand: something in desktop start up used to do this for me, but now I'm going through JACK it has to be done by hand.
3 comments:
That's probably why I haven't been able to get Ardour working - ta!
Dang, if I knew that last week maybe I wouldn't have decided to buy another sampler/sequencer. But I probably would have done anyway.
Two tips for Ardour, as it's a little confusing:
* you want to set Options->Monitoring->Ardour does monitoring in order to hear input
* you probably want to disable "Auto input" (near top right) so you only hear input when recording is running
* you need to create a track, then enable it as a recording track by clicking the record button on the track itself (not the master one at the top)
wow, Audacity really is broken. I'm used to it hanging when I try to play a new loop without stopping the old one, but the compressor effect just took down my X server! I can't be bothered configuring Ardour right now so I'm going to stick to hardware instead of buggy software.
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