[LAU] Jack X-run

Lucas Takejame lucas at takejame.com.br
Wed May 14 17:48:41 UTC 2014

Hey guys, I having a strange issue with jack, when I start Qjackctl with
256 frames/period it works fine, but when i change to 128, it starts
popping Xruns with nothing connected or instantiated at all! The most
strange part is that I don't even remember installing or changing anything
these days and this started to happening out of nothing, it used to work
fine with any frames/period. Here are some information:

14:33:19.691 /usr/bin/jackd -P1 -dalsa -r48000 -p128 -n2 -D -Chw:0 -Phw:0,0

Cannot connect to server socket err = Arquivo ou diretório não encontrado

Cannot connect to server request channel

jack server is not running or cannot be started

14:33:19.701 JACK was started with PID=8972.

no message buffer overruns

no message buffer overruns

no message buffer overruns

jackdmp 1.9.9

Copyright 2001-2005 Paul Davis and others.

Copyright 2004-2012 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

JACK server starting in realtime mode with priority 1

control device hw:0

control device hw:0


Acquire audio card Audio0

creating alsa driver ... hw:0,0|hw:0|128|2|48000|0|0|nomon|swmeter|-|32bit

control device hw:0

configuring for 48000Hz, period = 128 frames (2.7 ms), buffer = 2 periods

ALSA: final selected sample format for capture: 32bit integer little-endian

ALSA: use 2 periods for capture

ALSA: final selected sample format for playback: 32bit integer little-endian

ALSA: use 2 periods for playback

14:33:21.909 JACK connection change.

14:33:21.910 Server configuration saved to "/home/lucas/.jackdrc".

14:33:21.912 Statistics reset.

14:33:21.916 Client activated.

14:33:21.921 JACK connection graph change.

14:33:24.068 XRUN callback (1).

14:33:25.923 XRUN callback (2 skipped).

14:33:26.058 XRUN callback (4).

uname -a:
Linux lucas 3.2.0-4-amd64 #1 SMP Debian 3.2.57-3+deb7u1 x86_64 GNU/Linux

jack_cpu_load during the xRuns:
jack DSP load 1.602078
jack DSP load 1.654288
jack DSP load 1.559496
jack DSP load 1.579738
jack DSP load 1.520961
jack DSP load 1.560494
jack DSP load 1.541332
jack DSP load 1.459514
jack DSP load 1.545006
jack DSP load 1.515532
jack DSP load 0.983672
jack DSP load 1.566202


 8972 lucas     20   0  126m  88m  81m S   3,7  1,1   0:36.96 jackd

I already tryed to reinstall jackd2 and relateds...
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