[Bug 1291526] Re: could not start ksmserver with nvidia-prime at next login

[solazs]

I kept trying and apport came up. Got an error while trying to submit to bugs.kde.org, but here is the crash report:
Application: ksmserver (0.4)
KDE Platform Version: 4.12.3
Qt Version: 4.8.6
Operating System: Linux 3.13.0-17-generic x86_64
Distribution: Ubuntu Trusty Tahr (development branch)

-- Information about the crash:
- What I was doing when the application crashed:
trying to log in.
Steps to reproduce:
install nvidia-prime
switch to nvidia card using prime-select nvidia
log out and log back in
I'm on Ubuntu 14.04 x64 and a Dell N7110

The crash can be reproduced every time.

-- Backtrace:
Application: KDE munkamenetkezelő (ksmserver), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[KCrash Handler]
#6  0x00007f1c2265d992 in QObject::connect (sender=0x7f1c229ae920 <QString::shared_null>, signal=signal at entry=0x7f1c266f3446 "2phase2Done()", receiver=receiver at entry=0xc1fb20, method=method at entry=0x7f1c266f3435 "1kcmPhase2Done()", type=type at entry=Qt::AutoConnection) at kernel/qobject.cpp:2546
#7  0x00007f1c266e06e1 in connect (atype=Qt::AutoConnection, amember=0x7f1c266f3435 "1kcmPhase2Done()", asignal=0x7f1c266f3446 "2phase2Done()", asender=<optimized out>, this=0xc1fb20) at /usr/include/qt4/QtCore/qobject.h:339
#8  KSMServer::autoStart2 (this=0xc1fb20) at ../../ksmserver/startup.cpp:396
#9  0x00007f1c266e14fc in KSMServer::tryRestoreNext (this=this at entry=0xc1fb20) at ../../ksmserver/startup.cpp:360
#10 0x00007f1c266e18e8 in KSMServer::autoStart1Done (this=0xc1fb20) at ../../ksmserver/startup.cpp:304
#11 0x00007f1c266d7ef5 in KSMServer::qt_static_metacall (_o=0xc1fb20, _id=644822086, _a=0x7f1c22725346, _c=<optimized out>) at ./server.moc:132
#12 0x00007f1c2265c87a in QMetaObject::activate (sender=0xc29550, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3539
#13 0x00007f1c23ad6905 in OrgKdeKLauncherInterface::qt_static_metacall (_o=0xc5ce50, _id=644822086, _id at entry=1, _a=0x7fff087c99a0, _c=<optimized out>) at ./klauncher_iface.moc:93
#14 0x00007f1c23ad8713 in qt_static_metacall (_a=0x7fff087c99a0, _id=1, _c=QMetaObject::InvokeMetaMethod, _o=0xc29550) at ./klauncher_iface.moc:162
#15 OrgKdeKLauncherInterface::qt_metacall (this=0xc29550, _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0x7fff087c99a0) at ./klauncher_iface.moc:163
#16 0x00007f1c229d41f6 in QDBusConnectionPrivate::deliverCall (this=0xab37b0, object=0xc29550, msg=..., metaTypes=..., slotIdx=6) at qdbusintegrator.cpp:951
#17 0x00007f1c22660c1e in QObject::event (this=0xc29550, e=<optimized out>) at kernel/qobject.cpp:1194
#18 0x00007f1c22df4e2c in QApplicationPrivate::notify_helper (this=this at entry=0x9f7980, receiver=receiver at entry=0xc29550, e=e at entry=0xc90da0) at kernel/qapplication.cpp:4567
#19 0x00007f1c22dfb4a0 in QApplication::notify (this=this at entry=0x9e39c0, receiver=receiver at entry=0xc29550, e=e at entry=0xc90da0) at kernel/qapplication.cpp:4353
#20 0x00007f1c25cadb9a in KApplication::notify (this=0x9e39c0, receiver=0xc29550, event=0xc90da0) at ../../kdeui/kernel/kapplication.cpp:311
#21 0x00007f1c226484dd in QCoreApplication::notifyInternal (this=0x9e39c0, receiver=receiver at entry=0xc29550, event=event at entry=0xc90da0) at kernel/qcoreapplication.cpp:953
#22 0x00007f1c2264bb3d in sendEvent (event=0xc90da0, receiver=0xc29550) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#23 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver at entry=0x0, event_type=event_type at entry=0, data=0x9551f0) at kernel/qcoreapplication.cpp:1577
#24 0x00007f1c2264bfe3 in QCoreApplication::sendPostedEvents (receiver=receiver at entry=0x0, event_type=event_type at entry=0) at kernel/qcoreapplication.cpp:1470
#25 0x00007f1c22675f83 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#26 postEventSourceDispatch (s=0x9e8350) at kernel/qeventdispatcher_glib.cpp:287
#27 0x00007f1c1d271e04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f1c1d272048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007f1c1d2720ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007f1c226757a1 in QEventDispatcherGlib::processEvents (this=0x956af0, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#31 0x00007f1c22e96bb6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#32 0x00007f1c226470af in QEventLoop::processEvents (this=this at entry=0x7fff087ca040, flags=...) at kernel/qeventloop.cpp:149
#33 0x00007f1c226473a5 in QEventLoop::exec (this=this at entry=0x7fff087ca040, flags=...) at kernel/qeventloop.cpp:204
#34 0x00007f1c2264cb79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#35 0x00007f1c22df337c in QApplication::exec () at kernel/qapplication.cpp:3828
#36 0x00007f1c266d2589 in kdemain (argc=<optimized out>, argv=<optimized out>) at ../../ksmserver/main.cpp:318
#37 0x00007f1c26318ec5 in __libc_start_main (main=0x4006d0 <main(int, char**)>, argc=1, argv=0x7fff087ca2c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff087ca2b8) at libc-start.c:285
#38 0x00000000004006fe in _start ()

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https://bugs.launchpad.net/bugs/1291526

Title:
  could not start ksmserver with nvidia-prime at next login

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