OK. Eu começo o JACK sem iniciar o servidor JACK. Eu recebo:
23:09:22.730 Patchbay deactivated.
23:09:22.765 Statistics reset.
Cannot connect to server socket err = No such file or directory
Cannot connect to server socket
jack server is not running or cannot be started
23:09:23.059 ALSA connection graph change.
23:09:23.250 ALSA connection change.
Depois, pressiono o botão "play".
Eu recebo:
23:10:07.865 Startup script...
23:10:07.866 artsshell -q terminate
Cannot connect to server socket err = No such file or directory
Cannot connect to server socket
jack server is not running or cannot be started
sh: artsshell: not found
23:10:08.268 Startup script terminated with exit status=32512.
23:10:08.268 JACK is starting...
23:10:08.269 /usr/bin/jackd -dalsa -dhw:0 -r44100 -p1024 -n2
23:10:08.275 JACK was started with PID=1764.
Cannot create thread 1 Operation not permitted
Cannot create thread 1 Operation not permitted
jackdmp 1.9.6
Copyright 2001-2005 Paul Davis and others.
Copyright 2004-2010 Grame.
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
Cannot lock down memory area (Cannot allocate memory)
audio_reservation_init
Acquire audio card Audio0
creating alsa driver ... hw:0|hw:0|1024|2|44100|0|0|nomon|swmeter|-|32bit
Using ALSA driver HDA-Intel running on card 0 - HDA Intel at 0xdfebc000 irq 42
configuring for 44100Hz, period = 1024 frames (23.2 ms), buffer = 2 periods
ALSA: final selected sample format for capture: 32bit integer little-endian
ALSA: use 2 periods for capture
ALSA: final selected sample format for playback: 32bit integer little-endian
ALSA: use 2 periods for playback
Cannot use real-time scheduling (RR/10)(1: Operation not permitted)
AcquireSelfRealTime error
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
23:10:15.341 Could not connect to JACK server as client. - Overall operation failed. - Server communication error.
Se eu não pressionar nada, a mensagem de erro lida acima se repetirá infinitamente.
Eu instalei o JACK nos repositórios e é isso que eu recebi.
Parece que você perdeu as permissões. Sua distribuição configurou um grupo audio ? O seu usuário é um membro desse grupo?
Qual versão do JACK você instalou? O JACK2 é o preferido, e acredito que o Debian fornece configurações decentes. Para instalar o JACK2, execute este comando ...
sudo apt-get install jackd2
Se você já tem o jack2 instalado, reconfigure assim ...
sudo dpkg-reconfigure -p high jackd2
Se você ainda estiver com problemas para comentar, eu irei acompanhar.