Bug#598972: jackd2: Infinite loop on startup

[Sylvain Beucler]

Package: jackd2
Version: 1.9.5~dfsg-19
Severity: important

I get an infinite loop when starting jackd.

It worked a little while ago, I don't think I changed my audio config
since then, so I suspect a change in the package (or in a dependency).

Here's thet trace, where I start jackd and eventually kill it:

$ jackd -d alsa
jackdmp 1.9.6
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
JACK server starting in realtime mode with priority 10
audio_reservation_init
Acquire audio card Audio0
creating alsa driver ... hw:0|hw:0|1024|2|48000|0|0|nomon|swmeter|-|32bit
Using ALSA driver HDA-Intel running on card 0 - HDA ATI SB at 0xfe9f4000 irq 16
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
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
^Cjack main caught signal 2
alsa_driver_xrun_recovery
JackAudioDriver::ProcessAsync: read error, skip cycle
Released audio card Audio0
audio_reservation_finish


-- System Information:
Debian Release: squeeze/sid
  APT prefers testing
  APT policy: (500, 'testing'), (300, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.32-5-amd64 (SMP w/4 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages jackd2 depends on:
ii  coreutils                 8.5-1          GNU core utilities
ii  debconf [debconf-2.0]     1.5.35         Debian configuration management sy
ii  libasound2                1.0.23-2       shared library for ALSA applicatio
ii  libc6                     2.11.2-6       Embedded GNU C Library: Shared lib
ii  libcelt0-0                0.7.1-1        The CELT codec runtime library
ii  libdbus-1-3               1.2.24-3       simple interprocess messaging syst
ii  libexpat1                 2.0.1-7        XML parsing C library - runtime li
ii  libgcc1                   1:4.4.4-17     GCC support library
ii  libjack-jackd2-0          1.9.5~dfsg-19  JACK Audio Connection Kit (librari
ii  libncurses5               5.7+20100313-4 shared libraries for terminal hand
ii  libreadline6              6.1-3          GNU readline and history libraries
ii  libsamplerate0            0.1.7-3        Audio sample rate conversion libra
ii  libsndfile1               1.0.21-3       Library for reading/writing audio 
ii  libstdc++6                4.4.4-17       The GNU Standard C++ Library v3
ii  python                    2.6.6-3        interactive high-level object-orie

Versions of packages jackd2 recommends:
pn  jackd2-firewire               <none>     (no description available)
ii  libpam-modules                1.1.1-6    Pluggable Authentication Modules f
ii  qjackctl                      0.3.6-1+b1 User interface for controlling the

Versions of packages jackd2 suggests:
pn  jack-tools                    <none>     (no description available)
pn  libjackasyn0                  <none>     (no description available)
pn  meterbridge                   <none>     (no description available)

-- debconf information:
* jackd/tweak_rt_limits: true