This bug was fixed in the package kdemultimedia - 4:4.6.2-0ubuntu2
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kdemultimedia (4:4.6.2-0ubuntu2) natty; urgency=low
* Add kubuntu_03_kmix_pulseaudio_fixes.diff: Cherry-pick several PulseAudio
related KMix fixes that will be part of KDE 4.6.3.
- Fixes very high CPU
This is a very annoying bug, since the audio system becomes completely
unresponsive.
I think it is reported also upstream, see
https://bugs.kde.org/show_bug.cgi?id=264292
** Bug watch added: KDE Bug Tracking System #264292
http://bugs.kde.org/show_bug.cgi?id=264292
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Hi Billy,
Well for me it looks like this corresponds to what JC was saying about a
corrupt profile - in my ~/.kde/share/apps/kmix/profiles I found
PulseAudio.Playback_Streams.1.default.xml was over 100MB:
control id=^stream:m$ subcontrols=* show=simple /
control
After some debugging I've found that it gets stuck in ViewSliders::_setMixSet()
at line 184, here's the block of code:
foreach ( ProfControl* control, _guiprof-getControls() )
{
//ProfControl* control = *it;
// The TabName of the control matches this View name (!!
I also seem to share the same problem; here is a pair of backtraces of a
gdb attach to kmix; it seems to be stuck in ViewBase::setMixSet
#0 __memcpy_ssse3_back () at
../sysdeps/x86_64/multiarch/memcpy-ssse3-back.S:1517
#1 0x7f960927082c in QString::realloc (this=0x70265b30,
same here on natty, it happens when my computer starts playing any sound.
I think this problem is related to pulseaudio too, in one session pulseaudio
didn't start due to a failed update and this bug disappeared
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Bugs,
Every time I boot my system kmix is fine, but as I go to youtube or
similar i can't anymore change/mute volume with media keys, and kmix
goes in 100% cpu frenzy (forcing me to kill it). I launch it back, it's
fine. Youtube, he goes mad. Kill. Repeat at will.
I did the same as JC, and back to
When viewing flash videos in opera browser, the kmix problem starts up
and opera cannot pause the videos.
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Bugs, which is subscribed to kdemultimedia in ubuntu.
https://bugs.launchpad.net/bugs/720882
Title:
Kmix causes
It is definitely adobe flash that crashes the sound. The menu can't even load
after viewing a flash video (fullscreen and normal).
I use adobe flash squared preview 3.
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I went to ~.kde/share/apps/kmix and renamed profiles to profiles1. Now I
have no problems. It must be a pulseaudio problem!
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https://bugs.launchpad.net/bugs/720882
Title:
Kmix causes
I believe after using virtualbox ose 4 the kmix goes from ~25,000K to
~92,000K
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https://bugs.launchpad.net/bugs/720882
Title:
Kmix causes my computer cpu to use 100%
It's definitely Virtualbox. When I run a vm, the kmix volume applet
cannot load and takes A LOT of resources. It will then either crash kwin
or it will delay log out/shutdown.
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