jack can stall mixxx startup

[Owen Williams]

I recently changed from jack1 to jack2, and it seems that something in jackd2 can get set up so that as mixxx starts up, portaudio tries to probe jack, and this can hang for 10 seconds or so.

Debug [Main]: PortAudio version: 1899 text: PortAudio V19-devel (built Feb 25 2014 21:09:53)
Debug [Main]: JACK client name set
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
bt_audio_service_open: connect() failed: Connection refused (111)
bt_audio_service_open: connect() failed: Connection refused (111)
bt_audio_service_open: connect() failed: Connection refused (111)
bt_audio_service_open: connect() failed: Connection refused (111)
ALSA lib pcm_hw.c:1667:(_snd_pcm_hw_open) Invalid value for card
ALSA lib pcm_hw.c:1667:(_snd_pcm_hw_open) Invalid value for card

[approx 10-15 second wait here]

Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
Debug [Main]: RubberBand version 1.8.1

This didn't always happen before, but not I can't get it to stop. I've tried deleting various config files to no avail. pasuspender doesn't help.

[Owen Williams (ywwg)]

This is similar to this old bug, but deleting .pulse did not help: https://bugs.launchpad.net/mixxx/+bug/927061

[Owen Williams (ywwg)]

Actually it hangs for 20 seconds every time it probes the sound cards. mega hassle

[Owen Williams (ywwg)]

Ah, I think this is actually a portaudio bug. I had been testing a new usb sound card ad had disconnected and reconnected it a couple dozen times. I suspect there's an index getting incremented and portaudio is taking about a second per index to look for cards.

[Swiftb0y (swiftb0y)]

Mixxx now uses GitHub for bug tracking. This bug has been migrated to:
https://github.com/mixxxdj/mixxx/issues/7765