Bug#633815: jackd2: Confirmation, after suspend/sleep jackdbus consumes all available time

[Harri Kiiskinen]

Package: jackd2
Version: 1.9.6~dfsg.1-2
Severity: normal

I can confirm this. I use jackd2 via qjackctl, and stopping the server via that GUI, and also stopping with 'jack_control stop', leaves 
jackdbus running. After waking up from suspend/hibernation, the jackdbus process consumes all available processor time and makes the 
computer extremely sluggish. This begins immediately after coming back, since recovery from hibernation takes ca. 15 minutes, and even 
wake-up from suspend takes minutes.

Perhaps getting rid of realtime properties would help, but that is the reason why I'm using jack in the first place on this relatively 
old computer of mine. There is no noticeable load on the system before suspend/hibernate, top shows around 1.4% of system time; after 
suspend/hibernate, all that is not consumed by important system processes are consumed by jackdbus, in my case around 85%.

Best,

Harri K.


-- System Information:
Debian Release: 6.0.6
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 2.6.32-5-686 (SMP w/1 CPU core)
Locale: LANG=en_GB.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages jackd2 depends on:
hi  coreutils              8.5-1             GNU core utilities
hi  debconf [debconf-2.0]  1.5.36.1          Debian configuration management sy
ii  libasound2             1.0.23-2.1        shared library for ALSA applicatio
ii  libc6                  2.11.3-3          Embedded GNU C Library: Shared lib
ii  libcelt0-0             0.7.1-1           The CELT codec runtime library
ii  libdbus-1-3            1.2.24-4+squeeze1 simple interprocess messaging syst
ii  libexpat1              2.0.1-7+squeeze1  XML parsing C library - runtime li
hi  libgcc1                1:4.4.5-8         GCC support library
hi  libjack-jackd2-0       1.9.6~dfsg.1-2    JACK Audio Connection Kit (librari
hi  libncurses5            5.7+20100313-5    shared libraries for terminal hand
hi  libreadline6           6.1-3             GNU readline and history libraries
hi  libsamplerate0         0.1.7-3           Audio sample rate conversion libra
hi  libsndfile1            1.0.21-3+squeeze1 Library for reading/writing audio 
ii  libstdc++6             4.4.5-8           The GNU Standard C++ Library v3
di  python-dbus            0.83.1-1          simple interprocess messaging syst

Versions of packages jackd2 recommends:
di  jackd2-firewire       1.9.6~dfsg.1-2     JACK Audio Connection Kit (FFADO a
hi  libpam-modules        1.1.1-6.1+squeeze1 Pluggable Authentication Modules f
hi  qjackctl              0.3.6-1+b1         User interface for controlling the

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

-- Configuration Files:
/etc/security/limits.d/audio.conf changed:
@audio   -  rtprio     95
@audio   -  memlock    970833
@audio   -  nice      -19


-- debconf information:
* jackd/tweak_rt_limits: true