cannot start jack server

Asked by Adrian on 2012-10-27

I installed Ubuntu Studio 12.10 and I cannot start jack server. I open QjackCtl and I get the following answer:

20:28:03.475 Patchbay deactivated.
20:28:03.493 Statistics reset.
20:28:03.498 ALSA connection change.
20:28:03.505 D-BUS: Service is available (org.jackaudio.service aka jackdbus).
20:28:03.702 D-BUS: JACK server could not be started. Sorry
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
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
20:28:03.759 ALSA connection graph change.
Sat Oct 27 20:28:03 2012: Starting jack server...
Sat Oct 27 20:28:03 2012: JACK server starting in realtime mode with priority 10
Sat Oct 27 20:28:03 2012: control device hw:0
Sat Oct 27 20:28:03 2012: control device hw:0
Sat Oct 27 20:28:03 2012: ERROR: Failed to acquire device name : Audio0 error : Method "RequestRelease" with signature "i" on interface "org.freedesktop.ReserveDevice1" doesn't exist

Sat Oct 27 20:28:03 2012: ERROR: Audio device hw:0 cannot be acquired...
Sat Oct 27 20:28:03 2012: ERROR: Cannot initialize driver
Sat Oct 27 20:28:03 2012: ERROR: JackServer::Open failed with -1
Sat Oct 27 20:28:03 2012: ERROR: Failed to open server
Sat Oct 27 20:28:04 2012: Saving settings to "/home/adrian/.config/jack/conf.xml" ...
20:28:07.827 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

Can anyone help me, please?

Question information

Language:
English Edit question
Status:
Answered
For:
Ubuntu jack Edit question
Assignee:
No assignee Edit question
Last query:
2012-10-27
Last reply:
2014-07-31
Rodrigo Rosa (sotallica87) said : #1

i was having the same issue after updating from 12.04 to 12.10, found this workaround:
http://debian.2.n7.nabble.com/Jackd2-Pulseaudio-negotiation-failing-td2072650.html

worked for me.

Kirill Müller (krlmlr) said : #2

Try killing the pulseaudio server. It will be restarted automatically, but after that, starting jackd has worked for me.

killall pulseaudio

or

killall -9 pulseaudio

Does it work for you? Might be that something has to be started before pulseaudio to get everything straight.

Raven King (deathbyfreezeray) said : #3

Based on this line:
Sat Oct 27 20:28:03 2012: ERROR: Audio device hw:0 cannot be acquired...

A believe this is a result of jack selectign a bad audio device.
What you can try is using qjackctl, in the setup menu, look for the "Interface" option, and dont hit the dropdown menu, but hit the arrow ">" next to it.
This will list devices reported by alsa.
Try the devices on that list till one of them works. "hw:Generic" is likely what you're looking for.

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