Jack Control errors
Hi,
Can anyone help me please? Evidently I need to run Jack Control in combination with Qsynth to play my midi keyboard. That was ok for about a week or so, then Jack developed a problem. This was solved the first time by me unticking the Realtime box in Jack setup, but that has not worked this time. Must I rely on Jack just to have my midi keyboard sound? The errors mssges I recieve are: Could not connect to JACK server as client. - Overall operation failed. - Unable to connect to server. Please check the messages window for more info. and; 12:45:12.427 Patchbay deactivated. 12:45:12.480 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 12:45:12.533 ALSA connection graph change. 12:45:12.971 ALSA connection change. 12:45:44.736 Startup script... 12:45:44.737 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 12:45:45.142 Startup script terminated with exit status=32512. 12:45:45.142 JACK is starting... 12:45:45.142 /usr/bin/jackd -r -dalsa -dhw:0 -r44100 -p1024 -n2 -Xseq 12:45:45.153 JACK was started with PID=2008. 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 non-realtime mode 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 USB-Audio running on card 0 - Alesis Q25 at usb-0000:00:02.0-3, full speed ALSA: Cannot open PCM device alsa_pcm for playback. Falling back to capture-only mode Cannot initialize driver JackServer::Open() failed with -1 Failed to start server 12:45:45.364 JACK was stopped with exit status=255. 12:45:45.364 Post-shutdown script... 12:45:45.364 killall jackd jackd: no process found 12:45:45.771 Post-shutdown script terminated with exit status=256. 12:45:47.294 Could not connect to JACK server as client. - Overall operation failed. - Unable to connect to server. Please check the messages window for more info. 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 12:45:55.100 Could not connect to JACK server as client. - Overall operation failed. - Unable to connect to server. Please check the messages window for more info. 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 |
Hi, some how the devs have decided that if you want to do anything musical, you have to install all and sundry.
You only need jackd (qjackctl, the gui) if you want a sequencer. That is midi operation and control of multiple devices. I also find jack to be flaky and dependent on other system files I know nothing about. Using a master keyboard midi controller to play synth soundfonts, you won't need realtime capabilities. midi runs at 1200Hz, you won't benefit unless you're trying to record and playback at once (monitoring in realtime). Quote:
http://sourceforge.net/apps/trac/flu...GettingStarted Regards Glenn edit. (without jack,) does the $USER have permission to access the device, is it usb? type lsusb to see the active devices. |
Thanks for your Help GlennsPref. I'm afraid I need more pedantic advice just to get my middi keyboard to sound like a piano!
I've installed fluidsynth and can open a gui, Qsynth (fluidsynth Qt) This has worked in more tempremental arangements with the Jack control app. But I dont know how to achieve my objective now. d-GeForce6100PM-M2:~$ lsusb Bus 002 Device 003: ID 05e3:1205 Genesys Logic, Inc. Afilias Optical Mouse H3003 Bus 002 Device 002: ID 13b2:0065 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 005: ID 058f:6387 Alcor Micro Corp. Transcend JetFlash Flash Drive Bus 001 Device 002: ID 041e:4083 Creative Technology, Ltd Live! Cam Socialize [VF0640] Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub nnjond@nnjond-GeForce6100PM-M2:~$ |
Well I don't have a Midi Keyboard as such, I just use this keyboard (PC).
Mind you I don't play with it much, just write the lines I need then move on to the next task. Mostly just bass and drums. If you must use jack, then open up the parameters a bit (increasing the latency time) and yes, there's no point ticking the realtime option if you are not running a RT kernel. Another approach is giving your music programs elevated nice levels and priorities. /etc/set_rlimits Code:
# Configuration file for set_rlimits. Format is: There's a lot there you won't need, but it has some links to tools I used for checking my system. Cheers, Glenn |
Thanks again. That problem has righted itself and I can now use Qsynth without the Jack app. However, bizarely, I can't get the suitable patch ie, grand piano. All I can load are annoying gimmick y sounds!
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The file is a .SF2 extension.
I'm just trying to track down where I got them from. In the meantime... (edit) btw, I'm really happy it's working again. There is a new python interface released this month, might have a look at that. |
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I also suggest you check out this music site..
http://wiki.linuxmusicians.com/doku...._configuration |
same problem
I have the same problem with my CME m-Key keyboard. Driver can't be initialized. What was the solution?
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