Application: plasmashell (5.4.2)

Qt Version: 5.4.2
Operating System: Linux 4.2.0-34-generic x86_64
Distribution: Ubuntu 15.10

-- Information about the crash:
- What I was doing when the application crashed: just logged in when plasma crashed
i'm using last version of kde, with default driver nouveau on my acer laptop

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fe2d9db1800 (LWP 1066))]

Thread 8 (Thread 0x7fe2c5402700 (LWP 1067)):
#0  0x00007fe2d455b88d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fe2d85a2bd2 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fe2d85a474f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fe2c774ca39 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so
#4  0x00007fe2d4c4e2be in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe2d3d3d6aa in start_thread (arg=0x7fe2c5402700) at pthread_create.c:333
#6  0x00007fe2d4566e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fe2bed52700 (LWP 1072)):
#0  0x00007fe2d455b88d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fe2d13081ec in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe2d13082fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe2d4e8529b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fe2d4e2b75a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe2d4c493d4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe2d7471f85 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fe2d4c4e2be in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fe2d3d3d6aa in start_thread (arg=0x7fe2bed52700) at pthread_create.c:333
#9  0x00007fe2d4566e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fe2b38ee700 (LWP 1089)):
#0  0x00007fe2d134c869 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fe2d1307789 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe2d130811b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe2d13082fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fe2d4e8529b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe2d4e2b75a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe2d4c493d4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fe2d7471f85 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fe2d4c4e2be in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fe2d3d3d6aa in start_thread (arg=0x7fe2b38ee700) at pthread_create.c:333
#10 0x00007fe2d4566e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fe2b104f700 (LWP 1096)):
#0  __libc_disable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:98
#1  0x00007fe2d4557459 in read () at ../sysdeps/unix/syscall-template.S:81
#2  0x00007fe2d134b4e0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe2d1307cd4 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fe2d1308190 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fe2d13082fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fe2d4e8529b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fe2d4e2b75a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fe2d4c493d4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fe2d7471f85 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007fe2d4c4e2be in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fe2d3d3d6aa in start_thread (arg=0x7fe2b104f700) at pthread_create.c:333
#12 0x00007fe2d4566e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fe2a36fa700 (LWP 1108)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fe2d97fd114 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007fe2d97fd159 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007fe2d3d3d6aa in start_thread (arg=0x7fe2a36fa700) at pthread_create.c:333
#4  0x00007fe2d4566e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fe220d24700 (LWP 1112)):
#0  0x00007ffed93f2ab6 in clock_gettime ()
#1  0x00007fe2d457533d in __GI___clock_gettime (clock_id=<optimized out>, tp=<optimized out>) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007fe2d4cff3a6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fe2d4e82d29 in QTimerInfoList::updateCurrentTime() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fe2d4e83295 in QTimerInfoList::timerWait(timespec&) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe2d4e8467e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe2d130777d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fe2d130811b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007fe2d13082fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007fe2d4e8529b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fe2d4e2b75a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fe2d4c493d4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fe2d7dedef6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#13 0x00007fe2d4c4e2be in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007fe2d3d3d6aa in start_thread (arg=0x7fe220d24700) at pthread_create.c:333
#15 0x00007fe2d4566e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fe21362a700 (LWP 1151)):
#0  0x00007fe2d13081d2 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fe2d13082fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe2d4e8529b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fe2d4e2b75a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fe2d4c493d4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe2158c18f7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#6  0x00007fe2d4c4e2be in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fe2d3d3d6aa in start_thread (arg=0x7fe21362a700) at pthread_create.c:333
#8  0x00007fe2d4566e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fe2d9db1800 (LWP 1066)):
[KCrash Handler]
#6  brw_meta_fast_clear (brw=brw@entry=0x2944a88, fb=fb@entry=0x4e96090, buffers=buffers@entry=34, partial_clear=partial_clear@entry=false) at ../../../../../../../src/mesa/drivers/dri/i965/brw_meta_fast_clear.c:451
#7  0x00007fe2bc575dcc in brw_clear (ctx=0x2944a88, mask=34) at ../../../../../../../src/mesa/drivers/dri/i965/brw_clear.c:247
#8  0x00007fe2d7e2037a in QSGBatchRenderer::Renderer::renderBatches() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007fe2d7e24b3a in QSGBatchRenderer::Renderer::render() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007fe2d7e2fa1c in QSGRenderer::renderScene(QSGBindable const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007fe2d7e2fe9b in QSGRenderer::renderScene(unsigned int) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007fe2d7e3e5be in QSGRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#13 0x00007fe2d7e8820c in QQuickWindowPrivate::renderSceneGraph(QSize const&) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007fe2d7e58bac in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007fe2d7e596d1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x00007fe2d590bb8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007fe2d5911230 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007fe2d4e2df1b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007fe2d4e8409d in QTimerInfoList::activateTimers() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007fe2d4e845a1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007fe2d1307ff7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007fe2d1308250 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007fe2d13082fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007fe2d4e8527f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007fe2d4e2b75a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007fe2d4e332cc in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00000000004322c3 in main (argc=2, argv=<optimized out>) at ../../shell/main.cpp:176

Possible duplicates by query: bug 361143, bug 360814, bug 360546, bug 359885, bug 359696.

Reported using DrKonqi