Rakarrack Guitar Effects / Discussion / Help: Cannot make a jack client, is jackd running?

Markus Hinterreiter - 2017-03-13

Hi there,

I'm quite an inexperienced linux user trying to record my guitar via pedal & usb.
To preface this I messed with some of the alsa settings to get my Lenovo y50 subwoofer to work as layed out here https://github.com/dragosprju/y50-subwoofer-linux-enabler. I don't think this is in any way connected to my issue, just wanted to mention it.

When I start up rakarrack I get: Cannot make a jack client, is jackd running?

My terminal output is:
sudo rakarrack

rakarrack 0.6.1 - Copyright (c) Josep Andreu - Ryan Billing - Douglas McClendon - Arnout Engelen
Try 'rakarrack --help' for command-line options.
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jackdmp 1.9.11
Copyright 2001-2005 Paul Davis and others.
Copyright 2004-2014 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
no message buffer overruns
no message buffer overruns
no message buffer overruns
JACK server starting in realtime mode with priority 10
self-connect-mode is "Don't restrict self connect requests"
audio_reservation_init
Acquire audio card Audio0
creating alsa driver ... hw:0|hw:0|1024|2|48000|0|0|nomon|swmeter|-|32bit
ALSA: Cannot open PCM device alsa_pcm for playback. Falling back to capture-only mode
JackTemporaryException : now quits...
Cannot initialize driver
JackServer::Open failed with -1
Failed to open server
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
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 4294967295, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for 4294967295, skipping unlock
Cannot make a jack client, is jackd running?
[...]

How do I get it to run?

Thanks!

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Achilleus Mantzios - 2017-03-17

just try starting qjackctl first.

rackarrack is a fantastic piece of software, never got around using it in full, but some of its effects like "hard rock amp" with the delay enabled is just DIVINE.

Too bad the project is on hiatus. A newer version would be KILLER.
BTW I never found any of guitarix's tones useful.

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Markus Hinterreiter - 2017-03-19

I get an error there as well. This is the output:

19:51:20.862 Statistics reset.
19:51:20.881 ALSA connection change.
19:51:21.092 D-BUS: Service is available (org.jackaudio.service aka jackdbus).
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 4294967295, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for 4294967295, skipping unlock
19:51:21.145 ALSA connection graph change.
19:51:26.667 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
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for 4294967295, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for 4294967295, skipping unlock
Sun Mar 19 19:51:26 2017: Starting jack server...
Sun Mar 19 19:51:26 2017: JACK server starting in realtime mode with priority 10
Sun Mar 19 19:51:26 2017: self-connect-mode is "Don't restrict self connect requests"
Sun Mar 19 19:51:26 2017: ERROR: Cannot lock down 82274202 byte memory area (Cannot allocate memory)
Sun Mar 19 19:51:26 2017: Acquired audio card Audio0
Sun Mar 19 19:51:26 2017: creating alsa driver ... hw:0|hw:0|1024|2|44100|0|0|nomon|swmeter|-|32bit
Sun Mar 19 19:51:26 2017: ERROR: ALSA: Cannot open PCM device alsa_pcm for playback. Falling back to capture-only mode
Sun Mar 19 19:51:26 2017: ERROR: Cannot initialize driver
Sun Mar 19 19:51:26 2017: ERROR: JackServer::Open failed with -1
Sun Mar 19 19:51:26 2017: ERROR: Failed to open server
Sun Mar 19 19:51:28 2017: Saving settings to "/home/gratis/.config/jack/conf.xml" ...
19:51:31.951 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 4294967295, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for 4294967295, skipping unlock

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Cannot make a jack client, is jackd running?

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Cannot make a jack client, is jackd running?