Jack problem with midi

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Francois Bonin

Jack problem with midi

Post by Francois Bonin »

Hi , i have been successfully using Reaper,Wineasio,jack/cadence with KDE 17.3 , now i am trying 18.3 Sylvia , and evverything seems fine except midi and jack.When i make a connection between Reaper and a my USB midi adapter,jack/cadence refuses to start.Otherwise , without midi , its ok.
first i launched cadence without any bridges...ok
then i launched QJackCtl...pk jack is running, i stop it, try to relaunch it...does not start anymore.
here is what i get:

12:44:27.001 Statistics reset.
12:44:27.075 ALSA connection change.
12:44:27.078 D-BUS: Service is available (org.jackaudio.service aka jackdbus).
12:44:27.146 JACK connection change.
12:44:27.163 Client activated.
12:44:27.164 Patchbay deactivated.
Mon Apr 9 12:44:27 2018: New client 'qjackctl' with PID 2377
12:44:57.424 Client deactivated.
12:44:57.538 D-BUS: JACK server is stopping...
12:44:57.542 D-BUS: JACK server was stopped (org.jackaudio.service aka jackdbus).
Mon Apr 9 12:44:57 2018: Client 'qjackctl' with PID 2377 is out
Mon Apr 9 12:44:57 2018: Stopping jack server...
Mon Apr 9 12:44:57 2018: Client 'system' with PID 0 is out
Mon Apr 9 12:44:57 2018: Released audio card Audio1
12:45:06.177 D-BUS: JACK server could not be started. Sorry
Mon Apr 9 12:45:06 2018: Starting jack server...
Mon Apr 9 12:45:06 2018: JACK server starting in realtime mode with priority 10
Mon Apr 9 12:45:06 2018: self-connect-mode is "Don't restrict self connect requests"
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
Mon Apr 9 12:45:06 2018: Acquired audio card Audio0
Mon Apr 9 12:45:06 2018: creating alsa driver ... hw:0|hw:0|1024|2|44100|0|0|nomon|swmeter|-|32bit
Mon Apr 9 12:45:06 2018: Using ALSA driver HDA-Intel running on card 0 - HDA NVidia at 0xfcffc000 irq 19
Mon Apr 9 12:45:06 2018: ERROR: ALSA: Cannot open PCM device alsa_pcm for playback. Falling back to capture-only mode
Mon Apr 9 12:45:06 2018: Released audio card Audio0
Mon Apr 9 12:45:06 2018: ERROR: Cannot initialize driver
Mon Apr 9 12:45:06 2018: ERROR: JackServer::Open failed with -1
Mon Apr 9 12:45:06 2018: ERROR: Failed to open server
Mon Apr 9 12:45:07 2018: Saving settings to "/home/bobo/.config/jack/conf.xml" ...
12:50:22.949 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 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

D-Bus:jack server could not be started...sorry
then
Error-jack audio connection kit


Any idea?
Last edited by LockBot on Wed Dec 28, 2022 7:16 am, edited 1 time in total.
Reason: Topic automatically closed 6 months after creation. New replies are no longer allowed.
Hoser Rob
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Level 20
Posts: 11806
Joined: Sat Dec 15, 2012 8:57 am

Re: Jack problem with midi

Post by Hoser Rob »

Searched "ubuntu Reaper" and found this ...

https://askubuntu.com/questions/929396/ ... controller
For every complex problem there is an answer that is clear, simple, and wrong - H. L. Mencken
Francois Bonin

Re: Jack problem with midi

Post by Francois Bonin »

Thank you, my problem was not really with midi, it was not configured with the correct audio card(usb) , i did it in Qjackctl , and everything is fine. :D
SOLVED!
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