Public bug reported:
Binary package hint: jackd2
Ubuntu Natty
jackd2 Version: 1.9.6~dfsg.1-3ubuntu1
As I've understood this bug is caused by RT_GROUP_SCHED being enabled in
the kernels configuration.
$ jackd -d alsa
jackdmp 1.9.7
Copyright 2001-2005 Paul Davis and others.
Copyright 2004-2010 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
Cannot create thread 1 Operation not permitted
Cannot create thread 1 Operation not permitted
JACK server starting in realtime mode with priority 10
control device hw:0
control device hw:0
audio_reservation_init
Acquire audio card Audio0
creating alsa driver ... hw:0|hw:0|1024|2|48000|0|0|nomon|swmeter|-|32bit
control device hw:0
Using ALSA driver HDA-Intel running on card 0 - HDA Intel at 0xf9200000 irq 41
configuring for 48000Hz, period = 1024 frames (21.3 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
Cannot use real-time scheduling (RR/10)(1: Operation not permitted)
AcquireSelfRealTime error
And to show that /etc/security/limits.d/audio.conf is properly set up:
# Provided by the jackd package.
#
# Changes to this file will be preserved.
#
# If you want to enable/disable realtime permissions, run
#
# dpkg-reconfigure -p high jackd
@audio - rtprio 95
@audio - memlock unlimited
#...@audio - nice -19
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: jackd2 1.9.6~dfsg.1-3ubuntu1
ProcVersionSignature: Ubuntu 2.6.37-12.26-generic 2.6.37
Uname: Linux 2.6.37-12-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Sat Jan 8 18:40:33 2011
ExecutablePath: /usr/bin/jackd
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110101)
ProcEnviron:
SHELL=/bin/bash
PATH=(custom, user)
LC_MESSAGES=en_US.utf8
LANG=en_US.UTF-8
LANGUAGE=en_US:en
SourcePackage: jackd2
** Affects: jackd2 (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386 natty
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https://bugs.launchpad.net/bugs/700396
Title:
jackd fails to get real-time scheduling
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