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Error when starting Qtractor
Everytime I start Qtractor a message appears saying "The audio/MIDI engine could not be started. Make sure the JACK audio server (jackd) and/or the ALSA Sequencer kernel module (snd-seq-midi) are up and running and then restart the session." Tried adding my Linux user account to audio group, still nothing.
The messages say:
23:11:56.527 Session closed.
23:12:02.560 The audio/MIDI engine could not be started. Make sure the JACK audio server (jackd) and/or the ALSA Sequencer kernel module (snd-seq-midi) are up and running and then restart the session.
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jackdmp 1.9.12
Copyright 2001-2005 Paul Davis and others.
Copyright 2004-2016 Grame.
Copyright 2016-2017 Filipe Coelho.
jackdmp comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details
JACK server starting in realtime mode with priority 10
self-connect-mode is "Don't restrict self connect requests"
audio_reservation_init
Acquire audio card Audio0
creating alsa driver ... hw:0|hw:0|1024|2|48000|0|0|nomon|swmeter|-|32bit
ALSA: Cannot open PCM device alsa_pcm for playback. Falling back to capture-only mode
JackTemporaryException : now quits...
Released audio card Audio0
audio_reservation_finish
Cannot initialize driver
JackServer::Open failed with -1
Failed to open server
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
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
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
23:12:07.357 New session: "Untitled1".
QXcbConnection: XCB error: 3 (BadWindow), sequence: 926, resource id: 14683111, major code: 40 (TranslateCoords), minor code: 0
re. Error when starting Qtractor
hi, you don't have a functional JACK service on the default first audio device ("hw:0"); the relevant messages (from jackd, which is auto-started on a new qtractor session) are the following:
You are here then suggested to try to work out to start the JACK server manually and test whether it ever succeeds and is stable. Please use yours truly QjackCtl or KXStudio's Cadence to make it happen. Only after you get all working fine you should retry and launch Qtractor.
hth.
Cheers
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