Всем привет!
Хороший человек 
curufinwe посоветовал мне для табулатур и нот использовать линуксовый TuxGuitar в тандеме с FluidSynth (QSynth) через JACK. Но я совершенный новичок и не понимаю, как это все заставить работать.
Когда я запускаю qJackCtrl, в сообщениях вижу:
00:22:36.394 Statistics reset.
00:22:36.445 ALSA connection change.
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
00:22:36.488 ALSA connection graph change.
В настройках у меня все дефолтно, отключена галка Enable D-Bus Interface / Enable Jack D-Bus interface. При нажатии на старт оно ругается на
Could not connect to JACK server as client.
- Overall operation failed.
- Server communication error.
Please check the messages window for more info.
и вываливает в messages:
00:24:21.326 JACK is starting...
00:24:21.327 /usr/bin/jackd -dalsa -dhw:0 -r44100 -p1024 -n2 -Xraw
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
00:24:21.396 JACK was started with PID=2881.
Cannot create RT messagebuffer thread: Operation not permitted (1)
Retrying messagebuffer thread without RT scheduling
Messagebuffer not realtime; consider enabling RT scheduling for user
no message buffer overruns
Cannot create RT messagebuffer thread: Operation not permitted (1)
Retrying messagebuffer thread without RT scheduling
Messagebuffer not realtime; consider enabling RT scheduling for user
no message buffer overruns
Cannot create RT messagebuffer thread: Operation not permitted (1)
Retrying messagebuffer thread without RT scheduling
Messagebuffer not realtime; consider enabling RT scheduling for user
no message buffer overruns
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"
Cannot lock down 82280346 byte 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
configuring for 44100Hz, period = 1024 frames (23.2 ms), buffer = 2 periods
ALSA: final selected sample format for capture: 24bit little-endian
ALSA: use 2 periods for capture
ALSA: final selected sample format for playback: 24bit little-endian
ALSA: use 2 periods for playback
Cannot create thread res = 1
Cannot use real-time scheduling (RR/10)(1: Operation not permitted)
AcquireSelfRealTime error
00:24:28.528 Could not connect to JACK server as client. - Overall operation failed. - Server communication error. Please check the messages window for more info.
JackPosixProcessSync::LockedTimedWait error usec = 5000000 err = Connection timed out
Driver is not running
Cannot create new client
Cannot read socket fd = 27 err = Success
CheckRes error
JackSocketClientChannel read fail
Cannot open qjackctl client
JackShmReadWritePtr1::~JackShmReadWritePtr1 - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
00:25:06.865 JACK is stopping...
Jack main caught signal 15
Видимо, тут ключевое «operation not permitted». В общем, научите - подскажите.
P.S. Встроенный в TuxGuitar секвенсор тоже не работает, играть играет но тишина в динамиках.
