[Bug 309965] KDE session often starts into broken state

[Ralf Jung]

https://bugs.kde.org/show_bug.cgi?id=309965

--- Comment #14 from Ralf Jung <post at ralfj.de> ---
Created attachment 75703
  --> https://bugs.kde.org/attachment.cgi?id=75703&action=edit
Backtrace of kded being stalled

I managed to catch another backtrace, this time with KDE 4.9.4 and the kmix
debug symbols. The full backtrace of all threads is attached, the interesting
part is:

#0  0x00007fce07a54f01 in ppoll (fds=<optimized out>, nfds=<optimized out>,
timeout=<optimized out>, sigmask=<optimized out>) at
../sysdeps/unix/sysv/linux/ppoll.c:57
#1  0x00007fcdf84a4437 in pa_mainloop_poll () from
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007fcdf84a49f9 in pa_mainloop_iterate () from
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007fcde53a1ecf in Mixer_PULSE::Mixer_PULSE (this=0x225db40,
mixer=<optimized out>, devnum=<optimized out>)
    at /home/r/src/kde/kde-stable/kde-sc/kmix/backends/mixer_pulse.cpp:935
#4  0x00007fcde53a24c4 in PULSE_getMixer (mixer=0x226a6e0, devnum=0) at
/home/r/src/kde/kde-stable/kde-sc/kmix/backends/mixer_pulse.cpp:859
#5  0x00007fcde53ae7df in Mixer::Mixer (this=0x226a6e0, ref_driverName=...,
device=0) at /home/r/src/kde/kde-stable/kde-sc/kmix/core/mixer.cpp:78
#6  0x00007fcde53b5be6 in MixerToolBox::initMixerInternal (this=0x0,
this at entry=0x21a4480, multiDriverMode=multiDriverMode at entry=false,
backendList=..., 
    ref_hwInfoString=...) at
/home/r/src/kde/kde-stable/kde-sc/kmix/core/mixertoolbox.cpp:146
#7  0x00007fcde53b687f in MixerToolBox::initMixer (this=0x21a4480,
multiDriverMode=false, backendList=..., ref_hwInfoString=...)
    at /home/r/src/kde/kde-stable/kde-sc/kmix/core/mixertoolbox.cpp:78

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