Bug 203794

On bug #203793 you've wrote that it is kwin crashing, does plasma crash with kwin?

Well sometimes plasma crashes and sometimes kwin. It's tricky to reproduce as after login, in certain time pressing ALT+Shift+F12 can cause this. However it doesn't trigger drkonqui and can't get backtrace. However I can open konsole(as I've configured a shortcut "win+k") and start the process again.

I can reproduce this bug on jaunty with PPAs KDE 4.3.2. I switched off composition and then plasma-desktop disappeared and crashed. For me plasma-desktop is extremely unstable recently because of an Openoffice Bug (or kwin?) which forces me to disable composition now and then, in normal business i cant live without effects ;)

It, by the way, doesnt matter when ich disable composition, it simply crashes most of the time. If not plasma-desktop then kwin, but thats another story i think.


sorry no debug build, but maybe usefull:
(gdb) c
Continuing.
[New Thread 0x7fbd6ffff950 (LWP 27465)]
[Thread 0x7fbd6ffff950 (LWP 27465) exited]

Program received signal SIGBUS, Bus error.
[Switching to Thread 0x7fbd9a398750 (LWP 5634)]
0x00007fbd9861e5b4 in KPixmapCache::Private::invalidateMmapFiles () from /usr/lib/libkdeui.so.5
(gdb) bt
#0  0x00007fbd9861e5b4 in KPixmapCache::Private::invalidateMmapFiles () from /usr/lib/libkdeui.so.5
#1  0x00007fbd9861d371 in KPixmapCache::recreateCacheFiles () from /usr/lib/libkdeui.so.5
#2  0x00007fbd9861dd37 in KPixmapCache::Private::checkFileVersion () from /usr/lib/libkdeui.so.5
#3  0x00007fbd9861e197 in KPixmapCache::Private::init () from /usr/lib/libkdeui.so.5
#4  0x00007fbd9861fc64 in KPixmapCache::discard () from /usr/lib/libkdeui.so.5
#5  0x00007fbd98620345 in KPixmapCache::deleteCache () from /usr/lib/libkdeui.so.5
#6  0x00007fbd918687f2 in ?? () from /usr/lib/libplasma.so.3
#7  0x00007fbd91868ca3 in ?? () from /usr/lib/libplasma.so.3
#8  0x00007fbd9186e721 in Plasma::Theme::qt_metacall () from /usr/lib/libplasma.so.3
#9  0x00007fbd99ee2ea2 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#10 0x00007fbd986110dd in ?? () from /usr/lib/libkdeui.so.5
#11 0x00007fbd985a4ed3 in KApplication::x11EventFilter () from /usr/lib/libkdeui.so.5
#12 0x00007fbd8de01907 in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#13 0x00007fbd974ef37f in ?? () from /usr/lib/libQtGui.so.4
#14 0x00007fbd9750287e in QApplication::x11ProcessEvent () from /usr/lib/libQtGui.so.4
#15 0x00007fbd9752c454 in ?? () from /usr/lib/libQtGui.so.4
#16 0x00007fbd95f2620a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#17 0x00007fbd95f298e0 in ?? () from /usr/lib/libglib-2.0.so.0
#18 0x00007fbd95f29a7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#19 0x00007fbd99ef6a8f in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#20 0x00007fbd9752bbdf in ?? () from /usr/lib/libQtGui.so.4
#21 0x00007fbd99ecbf42 in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#22 0x00007fbd99ecc314 in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#23 0x00007fbd99ece5e4 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#24 0x00007fbd8ddee3eb in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#25 0x0000000000407215 in _start ()
(gdb) c
Continuing.

Program terminated with signal SIGBUS, Bus error.
The program no longer exists.

Cant reproduce this currently and it might not even be related, but after manually restarting plasma-desktop, after this crash, it seems to cause the X-Server (xorg 7.4~5ubuntu18) to hog CPU. It has to be plasma-desktop, because after i killed the plasma-desktop process the X Server bahaved as expected and firefox was again top of cycle eater ;)

*** This bug has been marked as a duplicate of bug 182026 ***