<div dir="ltr"><div>this the jack version jb@jb-SATELLITE-L50-B:~$ pulseaudio --kill jb@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 </div>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 <div> </div></div><div class="gmail_extra"> <div class="gmail_quote">On Tue, Mar 29, 2016 at 4:26 PM, Ralf Mardorf <<a href="mailto:ralf.mardorf@alice-dsl.net" target="_blank">ralf.mardorf@alice-dsl.net</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">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? <div class="HOEnZb"><div class="h5"> -- ubuntu-studio-users mailing list <a href="mailto:ubuntu-studio-users@lists.ubuntu.com">ubuntu-studio-users@lists.ubuntu.com</a> Modify settings or unsubscribe at: <a href="https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users" rel="noreferrer" target="_blank">https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users</a> </div></div></blockquote></div> </div>