I have a standard Mint 13 (Cinnamon) install and would like to use rackarrack (the guitar amp). Now I need to get jack working for this and although I did a lot of homework and tried to follow several tutorials I just don't get it to work.
The details: I have a UGM96 USB audio adapter (http://www.esi-audio.com/products/ugm96/) that I managed to setup with Alsa. So my computer uses this as soundcard all right. With Alsa I can record my guitar plugged into the UGM96, in Audacity. So far so good. Only thing is I have no guitar affects. Therefore I'd like to use rakarrack, which needs jack.
But now, if I try to use Jack, it all goes wrong. I can start jackd with qjackctl, I can start rakarrack, I can connect inputs and outputs and such (in fact it connects automatically), but ... no sound at all. I did find in the qjackctl settings my USB audio card (hw:1 UGM96) and tried all sorts of tweaking but no good. And if I try to use Audacity with Jack, no input either. I also added myself to the audio group.
I put "pasuspender -- " in the qjackctl settings, to no avail. I tried with and without pulseaudio-module-jack installed and edited in /etc/pulse/default.pa, no difference. It just doesn't give a peep whatever I do
Can anyone help, please?
Here is the output from the qjackctl messages:
5:05.289 Baie de brassage désactivée.
19:45:05.304 Réinitialisation des statistiques.
19:45:05.313 Changement des connexions ALSA.
19:45:05.321 DBUS : le service est disponible (org.jackaudio.service soit jackdbus).
Cannot connect to server socket err = No such file or directory
Cannot connect to server socket
jack server is not running or cannot be started
19:45:08.827 DBUS : le serveur JACK démarre…
Cannot connect to server socket err = No such file or directory
Cannot connect to server socket
jack server is not running or cannot be started
19:45:08.833 DBUS : le serveur JACK a été démarré (org.jackaudio.service soit jackdbus).
Wed Oct 31 19:45:08 2012: Starting jack server...
Wed Oct 31 19:45:08 2012: JACK server starting in realtime mode with priority 10
Wed Oct 31 19:45:08 2012: [1m[31mERROR: Cannot lock down 82246176 byte memory area (Cannot allocate memory)[0m
Wed Oct 31 19:45:08 2012: control device hw:0
Wed Oct 31 19:45:08 2012: control device hw:0
Wed Oct 31 19:45:08 2012: Acquired audio card Audio0
Wed Oct 31 19:45:08 2012: creating alsa driver ... hw:0|hw:0|1024|2|44100|0|0|nomon|swmeter|-|32bit
Wed Oct 31 19:45:08 2012: control device hw:0
Wed Oct 31 19:45:08 2012: configuring for 44100Hz, period = 1024 frames (23.2 ms), buffer = 2 periods
Wed Oct 31 19:45:08 2012: ALSA: final selected sample format for capture: 32bit integer little-endian
Wed Oct 31 19:45:08 2012: ALSA: use 2 periods for capture
Wed Oct 31 19:45:08 2012: ALSA: final selected sample format for playback: 32bit integer little-endian
Wed Oct 31 19:45:08 2012: ALSA: use 2 periods for playback
Wed Oct 31 19:45:08 2012: [1m[31mERROR: Cannot use real-time scheduling (RR/10)(1: Operation not permitted)[0m
Wed Oct 31 19:45:08 2012: [1m[31mERROR: AcquireSelfRealTime error[0m
Wed Oct 31 19:45:08 2012: graph reorder: new port 'system:capture_1'
Wed Oct 31 19:45:08 2012: New client 'system' with PID 0
Wed Oct 31 19:45:08 2012: graph reorder: new port 'system:capture_2'
Wed Oct 31 19:45:08 2012: graph reorder: new port 'system:playback_1'
Wed Oct 31 19:45:08 2012: graph reorder: new port 'system:playback_2'
19:45:10.991 Changement des connexions JACK.
19:45:10.992 Configuration du serveur enregistrée dans « /home/casa/.jackdrc ».
19:45:10.992 Réinitialisation des statistiques.
19:45:11.009 Client activé.
19:45:11.038 Changement du graphique des connexions JACK.
Cannot lock down 82246176 byte memory area (Cannot allocate memory)
Wed Oct 31 19:45:10 2012: Saving settings to "/home/casa/.config/jack/conf.xml" ...
Wed Oct 31 19:45:10 2012: New client 'qjackctl' with PID 2862