Ubuntu 12.04 crackling?!

[Aleks]

Has anyone noticed that while recording, especially with Ardour and some other app like Guitarix and Rakarrack? I didn't have things like that in Ubuntu 11.10. Also when some audio app is running like Guitarix and Ardour and I call the dash I get all kinds of weird noises and cracklings. When I set Rakarrack louder, the input line in jumps to front mic etc. There are lots of Xruns in Jack. Maybe it's something with Jack, cause otherwise the 12.04 is fine. Here are some of the messages:

Fri Dec 7 18:15:55 2012: [1m[31mERROR: JackEngine::XRun: client = rakarrack was not finished, state = Triggered[0m
Fri Dec 7 18:15:55 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 18:15:55 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Running[0m
Fri Dec 7 18:15:55 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m

18:15:47.231 XRUN callback (4 skipped).
18:15:55.607 XRUN callback (923).

Fri Dec 7 18:15:19 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Running[0m
Fri Dec 7 18:15:19 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
18:15:29.698 XRUN callback (877).

[English Guy]

X-runs can cause crackling. its happened to me.

Perhaps your system is running out of resources if it happens when you start something else?

[Aleks]

Well I don't know.....Here is what I get when starting Ardour after starting QjackCtl

21:26:09.938 Patchbay deactivated.
21:26:09.947 Statistics reset.
21:26:10.072 ALSA connection change.
21:26:10.245 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
21:26:10.256 ALSA connection graph change.
21:42:04.317 D-BUS: JACK server is starting...
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
21:42:04.336 D-BUS: JACK server was started (org.jackaudio.service aka jackdbus).
Fri Dec 7 21:42:03 2012: Starting jack server...
Fri Dec 7 21:42:03 2012: JACK server starting in realtime mode with priority 20
Fri Dec 7 21:42:04 2012: Acquired audio card Audio0
Fri Dec 7 21:42:04 2012: creating alsa driver ... hw:0|hw:0|64|2|48000|0|0|nomon|swmeter|-|16bit
Fri Dec 7 21:42:04 2012: Using ALSA driver HDA-Intel running on card 0 - HDA Intel at 0xfdff8000 irq 44
Fri Dec 7 21:42:04 2012: configuring for 48000Hz, period = 64 frames (1.3 ms), buffer = 2 periods
Fri Dec 7 21:42:04 2012: ALSA: final selected sample format for capture: 16bit little-endian
Fri Dec 7 21:42:04 2012: ALSA: use 2 periods for capture
Fri Dec 7 21:42:04 2012: ALSA: final selected sample format for playback: 16bit little-endian
Fri Dec 7 21:42:04 2012: ALSA: use 2 periods for playback
Fri Dec 7 21:42:04 2012: graph reorder: new port 'system:capture_1'
Fri Dec 7 21:42:04 2012: New client 'system' with PID 0
Fri Dec 7 21:42:04 2012: graph reorder: new port 'system:capture_2'
Fri Dec 7 21:42:04 2012: graph reorder: new port 'system:playback_1'
Fri Dec 7 21:42:04 2012: graph reorder: new port 'system:playback_2'
Fri Dec 7 21:42:04 2012: graph reorder: new port 'system:playback_3'
Fri Dec 7 21:42:04 2012: graph reorder: new port 'system:playback_4'
Fri Dec 7 21:42:04 2012: graph reorder: new port 'system:playback_5'
Fri Dec 7 21:42:04 2012: graph reorder: new port 'system:playback_6'
Fri Dec 7 21:42:05 2012: Saving settings to "/home/alubuntu/.config/jack/conf.xml" ...
21:42:06.574 JACK connection change.
21:42:06.575 Server configuration saved to "/home/alubuntu/.jackdrc".
21:42:06.576 Statistics reset.
21:42:06.587 Client activated.
21:42:06.592 JACK connection graph change.
21:42:06.845 XRUN callback (1).
Fri Dec 7 21:42:06 2012: New client 'qjackctl' with PID 9893
21:42:10.611 XRUN callback (2).
21:42:12.555 XRUN callback (4).
21:42:12.596 XRUN callback (2 skipped).
21:42:14.282 XRUN callback (5).
21:42:16.600 XRUN callback (2 skipped).
21:42:18.379 XRUN callback (9).
21:42:18.603 XRUN callback (1 skipped).
21:42:20.605 XRUN callback (5 skipped).
21:42:22.888 JACK connection graph change.
21:42:22.985 XRUN callback (17).
Fri Dec 7 21:42:22 2012: New client 'ardourprobe' with PID 10066
Fri Dec 7 21:42:22 2012: Client 'ardourprobe' with PID 10066 is out
21:42:24.610 XRUN callback (5 skipped).
21:42:32.211 JACK connection graph change.
21:42:32.263 JACK connection graph change.
21:42:32.311 XRUN callback (23).
Fri Dec 7 21:42:32 2012: New client 'ardour' with PID 10066
21:42:32.430 JACK connection change.
21:42:32.632 XRUN callback (5 skipped).
21:42:36.520 JACK connection graph change.
21:42:36.618 XRUN callback (29).
21:42:36.638 XRUN callback (2 skipped).
21:42:36.698 JACK connection graph change.
21:42:36.841 JACK connection change.
21:42:36.845 JACK connection graph change.
21:42:37.046 JACK connection change.
21:42:37.051 JACK connection graph change.
Fri Dec 7 21:42:36 2012: port 'ardour:MMC in' created
Fri Dec 7 21:42:36 2012: port 'ardour:MTC in' created
Fri Dec 7 21:42:36 2012: port 'ardour:MIDI control in' created
Fri Dec 7 21:42:36 2012: port 'ardour:MIDI clock in' created
Fri Dec 7 21:42:36 2012: port 'ardour:MMC out' created
Fri Dec 7 21:42:36 2012: port 'ardour:MTC out' created
Fri Dec 7 21:42:36 2012: port 'ardour:MIDI control out' created
Fri Dec 7 21:42:36 2012: port 'ardour:MIDI clock out' created
Fri Dec 7 21:42:36 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:36 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:36 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:36 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:36 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:36 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:36 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:36 2012: port 'ardour:monitor/audio_in 1' created
Fri Dec 7 21:42:36 2012: port 'ardour:monitor/audio_in 2' created
Fri Dec 7 21:42:36 2012: port 'ardour:monitor/audio_out 1' created
Fri Dec 7 21:42:36 2012: port 'ardour:monitor/audio_out 2' created
Fri Dec 7 21:42:36 2012: port 'ardour:master/audio_in 1' created
Fri Dec 7 21:42:36 2012: port 'ardour:master/audio_in 2' created
Fri Dec 7 21:42:36 2012: port 'ardour:master/audio_out 1' created
Fri Dec 7 21:42:36 2012: port 'ardour:master/audio_out 2' created
Fri Dec 7 21:42:36 2012: port 'ardour:Audio 1/audio_in 1' created
Fri Dec 7 21:42:36 2012: port 'ardour:Audio 1/audio_out 1' created
Fri Dec 7 21:42:36 2012: port 'ardour:Audio 1/audio_out 2' created
Fri Dec 7 21:42:36 2012: port 'ardour:click/audio_out 1' created
Fri Dec 7 21:42:36 2012: port 'ardour:click/audio_out 2' created
Fri Dec 7 21:42:37 2012: port 'ardour:auditioner/audio_out 1' created
Fri Dec 7 21:42:37 2012: Connecting 'ardour:auditioner/audio_out 1' to 'ardour:monitor/audio_in 1'
Fri Dec 7 21:42:37 2012: port 'ardour:auditioner/audio_out 2' created
Fri Dec 7 21:42:37 2012: Connecting 'ardour:auditioner/audio_out 2' to 'ardour:monitor/audio_in 2'
Fri Dec 7 21:42:37 2012: Connecting 'ardour:master/audio_out 1' to 'ardour:monitor/audio_in 1'
Fri Dec 7 21:42:37 2012: [1m[31mERROR: JackGraphManager::Connect already connected port_src = 30 port_dst = 17[0m
Fri Dec 7 21:42:37 2012: Connecting 'ardour:master/audio_out 2' to 'ardour:monitor/audio_in 2'
Fri Dec 7 21:42:37 2012: [1m[31mERROR: JackGraphManager::Connect already connected port_src = 31 port_dst = 18[0m
Fri Dec 7 21:42:37 2012: Connecting 'ardour:monitor/audio_out 1' to 'system:playback_1'
Fri Dec 7 21:42:37 2012: Connecting 'ardour:monitor/audio_out 2' to 'system:playback_2'
Fri Dec 7 21:42:37 2012: Connecting 'ardour:Audio 1/audio_out 1' to 'ardour:master/audio_in 1'
Fri Dec 7 21:42:37 2012: Connecting 'ardour:Audio 1/audio_out 2' to 'ardour:master/audio_in 2'
Fri Dec 7 21:42:37 2012: [1m[31mERROR: JackGraphManager::Connect already connected port_src = 23 port_dst = 17[0m
Fri Dec 7 21:42:37 2012: [1m[31mERROR: JackGraphManager::Connect already connected port_src = 24 port_dst = 18[0m
Fri Dec 7 21:42:37 2012: Connecting 'system:capture_1' to 'ardour:Audio 1/audio_in 1'
Fri Dec 7 21:42:37 2012: [1m[31mERROR: JackGraphManager::Connect already connected port_src = 26 port_dst = 21[0m
Fri Dec 7 21:42:37 2012: [1m[31mERROR: JackGraphManager::Connect already connected port_src = 27 port_dst = 22[0m
Fri Dec 7 21:42:37 2012: Connecting 'ardour:click/audio_out 1' to 'system:playback_1'
Fri Dec 7 21:42:37 2012: Connecting 'ardour:click/audio_out 2' to 'system:playback_2'
Fri Dec 7 21:42:37 2012: Connecting 'ardour:MIDI clock out' to 'ardour:MIDI clock in'
Fri Dec 7 21:42:37 2012: [1m[31mERROR: JackGraphManager::Connect already connected port_src = 16 port_dst = 15[0m
21:42:38.381 XRUN callback (32).
21:42:38.978 XRUN callback (7 skipped).
Fri Dec 7 21:42:38 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:38 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:38 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:38 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:38 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:38 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:38 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:38 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:38 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:38 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:38 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:38 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:38 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:39 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
21:42:40.981 XRUN callback (16 skipped).
Fri Dec 7 21:42:40 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:40 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:40 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:40 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:42 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:42 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
21:42:42.983 XRUN callback (4 skipped).
Fri Dec 7 21:42:42 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:42 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:42 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Running[0m
Fri Dec 7 21:42:42 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:43 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:43 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:43 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:43 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:43 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:43 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:43 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:43 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:43 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:43 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:43 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:43 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:43 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:43 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:43 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:43 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:43 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:43 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:43 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:43 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:43 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
21:42:44.986 XRUN callback (5 skipped).
21:42:47.143 XRUN callback (68).
21:42:47.206 XRUN callback (6 skipped).
Fri Dec 7 21:42:47 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:47 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:47 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:47 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:47 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:47 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:47 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:47 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:47 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:47 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:47 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:47 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:47 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:47 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:47 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:47 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:47 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:47 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:47 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:47 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:47 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:47 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:47 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
21:42:49.221 XRUN callback (2 skipped).
21:42:51.403 XRUN callback (78).
Fri Dec 7 21:42:51 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:51 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:51 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:51 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:51 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:51 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:51 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:51 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:51 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
Fri Dec 7 21:42:51 2012: [1m[31mERROR: JackEngine::XRun: client = ardour was not finished, state = Triggered[0m
Fri Dec 7 21:42:51 2012: [1m[31mERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error[0m
21:42:53.227 XRUN callback (3 skipped).

On my System Monitor the CPU (dual core) varies between 20 - 60%. I noticed that it rises when changing the apps in use, like calling the System Monitor itself or the net browser. When I click the dash it goes between 60 - 70% and stays there. The memory used is 628 MiB (31.2%) out of 2.0GiB, and the swap is 18.6 Mib out of 4.6GiB.

[brummer]

configuring for 48000Hz, period = 64 frames (1.3 ms), buffer = 2 periods

You running jack real hard for the use with ardour. First try higher frame rates, usually 256 or 512 are good enough for play guitar live.
Also have you try the realTimeConfigQuickScan
http://wiki.linuxmusicians.com/doku.php ... figuration
to ensure that your system is set up well?

[Aleks]

I tried both and nothing helped. Now I notice that when the track is record enabled, even when I hover the mouse somewhere, or move it around Ardour's interface it crackles. Also, when I start QjackCtl and just hover the mouse to the launch bar without actually starting an app I get Xruns. Maybe it's something with Ubuntu 12.04's Unity and how it reacts with my PC. I guess I'll be getting back to the good ole 11.04

[brummer]

or just change the desktop manager, unity is well known to behave not so pro-audio friendly.
Going back to older releases wouldn't be a solution which works for long term.
If the X-runs caused by mouse-moving, the video driver could be involved, as well as the desktop manager.
Which video card do you use?
Have you tried lxde or xfce?

[logicgate]

What video card and video driver do you use? I have an NVidia card and had random pops, etc., with the default nouveau driver. The problems went away when I installed the proprietary driver.

[Aleks]

I use nvidia card and driver. From the available drivers the version 173 works best, so I have that running. I've just tried the other ones again but they're unusable for me, so I got back to 173. I tried XFCE4 as Brummer suggested and there I don't have Xruns at all, so it's the Unity, and the 3D in particular, 'cause when I start the 2D Unity desktop I have no Xruns while the Jack is running and I hover the mouse towards the launcher or the panels above. Also, when Ardour is running I get no Xruns, just warnings.

[Aleks]

configuring for 48000Hz, period = 64 frames (1.3 ms), buffer = 2 periods

You running jack real hard for the use with ardour. First try higher frame rates, usually 256 or 512 are good enough for play guitar live.
Also have you try the realTimeConfigQuickScan
http://wiki.linuxmusicians.com/doku.php ... figuration
to ensure that your system is set up well?

This is a nice script, but I've hit a wall at some points, so I need a bit help. When testing the IRQ threading with the command

grep -e CONFIG_IRQ_FORCED_THREADING=y -e CONFIG_PREEMPT=y /boot/config-`uname -r

I get this

CONFIG_IRQ_FORCED_THREADING=y

On the Wiki it says:

If it returns CONFIG_IRQ_FORCED_THREADING=y and CONFIG_PREEMPT=y then your kernel is using IRQ threading and you don't have to proceed with the following steps. If it only returns CONFIG_IRQ_FORCED_THREADING=y you can add the threadirqs boot option as described below. If the command returns nothing you have a kernel that cannot use threaded IRQs.

So I proceed with the steps and I add the "threadirq" to the GRUB_CMDLINE_LINUX_DEFAULT line in Grub, update it, reboot, but I still get only CONFIG_IRQ_FORCED_THREADING=y. Why is that so? Here's how that part of Grub looks like:

GRUB_DISTRIBUTOR="`lsb_release -i -s 2> /dev/null || echo Debian`"
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash threadirqs"
GRUB_CMDLINE_LINUX=""

Also that swapiness thing. I set it to 10, and every time I reboot it gets back to 60.


EDIT: I fixed the swappiness.

[Aleks]

Update on the crackling thing: It isn't there with Patchage or Gladish, only with QJaclCtl so I uninstalled it . If anyone is having problems like me, try that.