Hi, I tried changing it to OpenGL3.1 and OpenGL1 in desktop effects -
both times this triggered a kwin crash. Attaching the backtraces for
these (the kde bug reporter didn't think they were useful, though...)
I then changed it to xrender, as desktop effects module recommended (it
said that a crash had been triggered by my driver 'in the past') - this
seems to have got things working again (though 4 desktop effects are
still disabled, as these require OpenGL.
Cheers.
Application: kwin (4.11.6)
KDE Platform Version: 4.11.3
Qt Version: 4.8.6
Operating System: Linux 3.12-1-amd64 x86_64
Distribution: Debian GNU/Linux testing (jessie)
-- Information about the crash:
In detail, tell us what you were doing when the application crashed.
-- Backtrace:
Application: KWin (kwin), signal: Aborted
Using host libthread_db library /lib/x86_64-linux-gnu/libthread_db.so.1.
[Current thread is 1 (Thread 0x7f54cbe2f780 (LWP 14084))]
Thread 2 (Thread 0x7f54af11c700 (LWP 14177)):
#0 pthread_cond_timedwait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1 0x7f54c60b77b4 in QWaitCondition::wait(QMutex*, unsigned long) () from
/usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2 0x7f54c60ab0ba in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#3 0x7f54c60b72ef in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#4 0x7f54c3ba0e0e in start_thread (arg=0x7f54af11c700) at
pthread_create.c:311
#5 0x7f54cb6170fd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
Thread 1 (Thread 0x7f54cbe2f780 (LWP 14084)):
[KCrash Handler]
#5 0x7f54cb5631d5 in __GI_raise (sig=sig@entry=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:56
#6 0x7f54cb566388 in __GI_abort () at abort.c:90
#7 0x7f54cb55c252 in __assert_fail_base (fmt=0x7f54cb69a080 %s%s%s:%u:
%s%sAssertion `%s' failed.\n%n, assertion=assertion@entry=0x7f54c9472c10
!xcb_xlib_threads_sequence_lost, file=file@entry=0x7f54c9472a5b
../../src/xcb_io.c, line=line@entry=274,
function=function@entry=0x7f54c9472f16 poll_for_event) at assert.c:92
#8 0x7f54cb55c302 in __GI___assert_fail (assertion=0x7f54c9472c10
!xcb_xlib_threads_sequence_lost, file=0x7f54c9472a5b ../../src/xcb_io.c,
line=274, function=0x7f54c9472f16 poll_for_event) at assert.c:101
#9 0x7f54c94033d9 in ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#10 0x7f54c940346e in ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#11 0x7f54c940374d in _XEventsQueued () from
/usr/lib/x86_64-linux-gnu/libX11.so.6
#12 0x7f54c9406405 in _XGetRequest () from
/usr/lib/x86_64-linux-gnu/libX11.so.6
#13 0x7f54c6cb2307 in ?? () from /usr/lib/x86_64-linux-gnu/libGL.so.1
#14 0x7f54c6cafe3b in ?? () from /usr/lib/x86_64-linux-gnu/libGL.so.1
#15 0x7f54ad1ff70d in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#16 0x7f54ad1ffa13 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#17 0x7f54ad2005f3 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#18 0x7f54ad29a476 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#19 0x7f54c6cb165f in ?? () from /usr/lib/x86_64-linux-gnu/libGL.so.1
#20 0x7f54c6c8c1d3 in glXMakeCurrentReadSGI () from
/usr/lib/x86_64-linux-gnu/libGL.so.1
#21 0x7f54cb9ba9c9 in ?? () from
/usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#22 0x7f54cb9bc569 in ?? () from
/usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#23 0x7f54cb9b74ec in ?? () from
/usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#24 0x7f54cb99ba35 in ?? () from
/usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#25 0x7f54cb923295 in ?? () from
/usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#26 0x7f54c61cd658 in QMetaObject::activate(QObject*, QMetaObject const*,
int, void**) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#27 0x7f54c60a7ae8 in QFutureWatcherBase::event(QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQtCore.so.4
#28 0x7f54c555a6cc in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#29 0x7f54c5560d40 in QApplication::notify(QObject*, QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQtGui.so.4
#30 0x7f54ca26749a in KApplication::notify(QObject*, QEvent*) () from
/usr/lib/libkdeui.so.5
#31 0x7f54c61b93cd in QCoreApplication::notifyInternal(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#32 0x7f54c61bca2d in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#33 0x7f54c55f8eec in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#34 0x7f54c61b7f9f in
QEventLoop::processEvents(QFlagsQEventLoop::ProcessEventsFlag) () from
/usr/lib/x86_64-linux-gnu/libQtCore.so.4
#35 0x7f54c61b8295 in
QEventLoop::exec(QFlagsQEventLoop::ProcessEventsFlag) () from
/usr/lib/x86_64-linux-gnu/libQtCore.so.4
#36 0x7f54c61bda69 in QCoreApplication::exec() () from
/usr/lib/x86_64-linux-gnu/libQtCore.so.4
#37
