[ubuntu-studio-users] Jack can´t start

[Joao Bruno]

this the jack version
jb at jb-SATELLITE-L50-B:~$  pulseaudio --kill
jb at jb-SATELLITE-L50-B:~$ jackd -dalsa -dhw:1 -r48000 -p1024 -n3
jackdmp 1.9.10
Copyright 2001-2005 Paul Davis and others.
Copyright 2004-2013 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
audio_reservation_init
Acquire audio card Audio1
creating alsa driver ... hw:1|hw:1|1024|3|48000|0|0|nomon|swmeter|-|32bit
configuring for 48000Hz, period = 1024 frames (21.3 ms), buffer = 3 periods
ALSA: final selected sample format for capture: 32bit integer little-endian
ALSA: use 3 periods for capture
ALSA: final selected sample format for playback: 32bit integer little-endian
ALSA: use 3 periods for playback


this is the message after i did your orientations

under certain conditions; see the file COPYING for details

JACK server starting in realtime mode with priority 10

ALSA lib control.c:953:(snd_ctl_open_noupdate) Invalid CTL /dev/audio

control open "/dev/audio" (No such file or directory)

ALSA lib control.c:953:(snd_ctl_open_noupdate) Invalid CTL /dev/audio

control open "/dev/audio" (No such file or directory)

creating alsa driver ...
/dev/audio|/dev/audio|1024|3|44100|0|0|nomon|swmeter|-|32bit

ALSA lib control.c:953:(snd_ctl_open_noupdate) Invalid CTL /dev/audio

control open "/dev/audio" (No such file or directory)

ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM /dev/audio

ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM /dev/audio

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 open server

16:36:09.369 JACK was stopped with exit status=255.

16:36:11.435 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



On Tue, Mar 29, 2016 at 4:26 PM, Ralf Mardorf <ralf.mardorf at alice-dsl.net>
wrote:

> Please temporarily stop pulseaudio, since I don't have pulseaudio
> installed and I never used it, I'm not sure how to do this, but I guess
> running
>
>   pulseaudio --kill
>
> does the job nowadays, after that run
>
>   qjackctl
>
> and in "Settings... > Misc" uncheck "Enable D-Bus interface", then
> start and stop and close qjackctl, ignore error messages when starting,
> I only want to ensure, that D-Bus is disabled by the settings, what ever
> version of qjackctl you are using.
>
> In a terminal run
>
>   jackd -dalsa -dhw:1 -r48000 -p1024 -n3
>
> and assumed it shouldn't work run
>
>   jackd -dalsa -dhw:0 -r48000 -p1024 -n3
>
> Normally it's better to use "-n2" and go lower than "-p1024", but for
> testing purpose "-p1024 -n3" are good values.
>
> After starting jackd in a terminal, you can start qjackctl.
>
> Does this work?
>
> --
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