Roughly once a month during continuous use, my KDE desktop becomes unresponsive. I can still move the mouse and use the keyboard to access a tty, but none of the windows are responsive. Also, as I recall the panel clock stops ticking upward.
I was just typing in a textbox when the error occurred; nothing unusual and nothing I can reproduce at the moment.
This normally works from a tty:
DISPLAY=:0 xdpyinfo
but in this case it would just hang.
This also hung:
DISPLAY=:0 kwin --replace
and showed an error:
Next tried this:
DISPLAY=:0 kquitapp5 plasmashell && kstart5 plasmashell
Got a different error after a timeout:
There was nothing interesting in dmesg or journalctl output.
Below, I'm including backtraces and strace logs I took from the tty.
I also took backtraces from a tty when the shell was not hung. Plasmashell's backtrace was almost the same, but kwin's backtrace was markedly different. This may suggest that the bug is in kwin.
I would appreciate information on anything further debugging to try if this bug re-occurs.
Questions:
- How can I tell if this is a bug in Kwin or a bug in Plasmashell?
- What other debugging information should I gather when this re-occurs?
- Should I file a bug report even if I can't reliably reproduce?
Version information:
strace for kwin:
strace for plasmashell:
Version information:
After a reboot:
I was just typing in a textbox when the error occurred; nothing unusual and nothing I can reproduce at the moment.
This normally works from a tty:
DISPLAY=:0 xdpyinfo
but in this case it would just hang.
This also hung:
DISPLAY=:0 kwin --replace
and showed an error:
qt.qpa.screen: QXcbConnection: Could not connect to display :0
DISPLAY=:0 kquitapp5 plasmashell && kstart5 plasmashell
Got a different error after a timeout:
"Quitting application plasmashell failed. Error reported was:\n\n org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bug security policy blocked the reply, the reply timeout expired, or the network connection was broken."
Below, I'm including backtraces and strace logs I took from the tty.
I also took backtraces from a tty when the shell was not hung. Plasmashell's backtrace was almost the same, but kwin's backtrace was markedly different. This may suggest that the bug is in kwin.
I would appreciate information on anything further debugging to try if this bug re-occurs.
Questions:
- How can I tell if this is a bug in Kwin or a bug in Plasmashell?
- What other debugging information should I gather when this re-occurs?
- Should I file a bug report even if I can't reliably reproduce?
Version information:
strace for kwin:
Code:
[CONSOLE]
strace: Process 17277 attached
0.000000 restart_syscall(<... resuming interrupted restart_syscall ...>) = 1 <6.961568>
6.961887 recvmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\17\0G4\257\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., iov_len=4096}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 256 <0.000062>
0.000289 futex(0x55b7c6f84058, FUTEX_WAKE_PRIVATE, 1) = 1 <0.000059>
0.000246 futex(0x55b7c6f84008, FUTEX_WAKE_PRIVATE, 1) = 1 <0.000078>
0.000255 poll([{fd=3, events=POLLIN}], 1, -1) = 1 ([{fd=3, revents=POLLIN}]) <0.000042>
0.000253 recvmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\f\0G4v\235p\1\0\0\0\0@\6\35\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., iov_len=4096}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 288 <0.000058>
0.000324 futex(0x55b7c6f8405c, FUTEX_WAKE_PRIVATE, 1) = 1 <0.000056>
0.000241 futex(0x55b7c6f84008, FUTEX_WAKE_PRIVATE, 1) = 1 <0.000072>
0.000252 poll([{fd=3, events=POLLIN}], 1, -1) = 1 ([{fd=3, revents=POLLIN}]) <0.000043>
<snip>
[/CONSOLE]
Code:
[CONSOLE]
strace: Process 17281 attached
0.000000 restart_syscall(<... resuming interrupted restart_syscall ...>) = 1 <1.903452>
1.903651 recvmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\f\0A\254\31\0 \2\0\0\0\0@\6*\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., iov_len=4096}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 64 <0.000085>
0.000281 futex(0x55ce34f5fe3c, FUTEX_WAKE_PRIVATE, 1) = 1 <0.000066>
0.000167 poll([{fd=3, events=POLLIN}], 1, -1) = 1 ([{fd=3, revents=POLLIN}]) <0.002015>
0.002158 recvmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\f\0A\254\16\0 \2\0\0\0\0@\6\204\3\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", iov_len=4096}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 32 <0.000045>
0.000168 futex(0x55ce34f5fe38, FUTEX_WAKE_PRIVATE, 1) = 1 <0.000036>
0.000152 poll([{fd=3, events=POLLIN}], 1, -1) = 1 ([{fd=3, revents=POLLIN}]) <0.015041>
<snip>
[/CONSOLE]
Code:
[CONSOLE]
kwin-common:
Installed: 4:5.12.9.1-0ubuntu0.1
Candidate: 4:5.12.9.1-0ubuntu0.1
Version table:
*** 4:5.12.9.1-0ubuntu0.1 500
500 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages
100 /var/lib/dpkg/status
4:5.12.4-0ubuntu2 500
500 http://us.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
kwin-x11:
Installed: 4:5.12.9.1-0ubuntu0.1
Candidate: 4:5.12.9.1-0ubuntu0.1
Version table:
*** 4:5.12.9.1-0ubuntu0.1 500
500 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages
100 /var/lib/dpkg/status
4:5.12.4-0ubuntu2 500
500 http://us.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
plasma-workspace:
Installed: 4:5.12.9-0ubuntu0.1
Candidate: 4:5.12.9-0ubuntu0.1
Version table:
*** 4:5.12.9-0ubuntu0.1 500
500 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages
100 /var/lib/dpkg/status
4:5.12.4-0ubuntu3 500
500 http://us.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
libglx-mesa0:
Installed: 19.2.8-0ubuntu0~18.04.3
Candidate: 19.2.8-0ubuntu0~18.04.3
Version table:
*** 19.2.8-0ubuntu0~18.04.3 500
500 http://us.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
100 /var/lib/dpkg/status
19.2.8-0ubuntu0~18.04.2 500
500 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages
18.0.0~rc5-1ubuntu1 500
500 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages
[/CONSOLE]
[CONSOLE]
#0 0x00007f44bb30bbf9 in __GI___poll (fds=fds@entry=0x7ffee94290b8, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007f44ba215747 in poll (__timeout=-1, __nfds=1, __fds=0x7ffee94290b8) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2 0x00007f44ba215747 in _xcb_conn_wait (c=c@entry=0x55b7c6f83ff0, cond=cond@entry=0x7ffee94291d0, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:479
#3 0x00007f44ba21706f in wait_for_reply (c=c@entry=0x55b7c6f83ff0, request=request@entry=1039610951, e=e@entry=0x7ffee9429250) at ../../src/xcb_in.c:516
#4 0x00007f44ba2172a8 in xcb_request_check (c=0x55b7c6f83ff0, cookie=cookie@entry=...) at ../../src/xcb_in.c:745
#5 0x00007f44bae66c41 in KWin::WindowPixmap::create() (this=this@entry=0x55b7c7801540) at ./scene.cpp:1021
#6 0x00007f448b1f7498 in KWin::XRenderWindowPixmap::create() (this=0x55b7c7801540) at ./plugins/scenes/xrender/scene_xrender.cpp:803
#7 0x00007f448b1f3ef2 in KWin::Scene::Window::windowPixmap<KWin::XRenderWindowPixmap>() (this=0x55b7c8a09d90) at ./scene.h:626
#8 0x00007f448b1f3ef2 in KWin::SceneXrender::Window::performPaint(int, QRegion, KWin::WindowPaintData) (this=this@entry=0x55b7c8a09d90, mask=mask@entry=9, region=..., data=<incomplete type>) at ./plugins/scenes/xrender/scene_xrender.cpp:429
#9 0x00007f44bae6cd1d in KWin::Scene::finalDrawWindow(KWin::EffectWindowImpl*, int, QRegion, KWin::WindowPaintData&) (this=this@entry=0x55b7c6febd30, w=w@entry=0x55b7c7d3e870, mask=mask@entry=9, region=..., data=...) at ./scene.cpp:615
#10 0x00007f44bae7a986 in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) (this=<optimized out>, w=0x55b7c7d3e870, mask=9, region=..., data=...) at ./effects.cpp:459
#11 0x00007f44b7e81620 in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwineffects.so.11
#12 0x00007f44bae7a91e in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) (this=this@entry=0x55b7c7249c20, w=w@entry=0x55b7c7d3e870, mask=mask@entry=9, region=..., data=...) at ./effects.cpp:456
#13 0x00007f44bae66890 in KWin::Scene::finalPaintWindow(KWin::EffectWindowImpl*, int, QRegion, KWin::WindowPaintData&) (this=this@entry=0x55b7c6febd30, w=w@entry=0x55b7c7d3e870, mask=mask@entry=9, region=..., data=...) at ./scene.cpp:606
#14 0x00007f44bae7a7ad in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) (this=<optimized out>, w=0x55b7c7d3e870, mask=9, region=..., data=...) at ./effects.cpp:422
#15 0x00007f44b7e8db97 in KWin::AnimationEffect::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwineffects.so.11
#16 0x00007f44bae7a74e in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) (this=this@entry=0x55b7c7249c20, w=0x55b7c7d3e870, mask=mask@entry=9, region=..., data=...) at ./effects.cpp:419
#17 0x00007f44bae6cc02 in KWin::Scene::paintWindow(KWin::Scene::Window*, int, QRegion, KWin::WindowQuadList) (this=this@entry=0x55b7c6febd30, w=0x55b7c8a09d90, mask=9, region=..., quads=...) at ./scene.cpp:478
#18 0x00007f44bae6b97c in KWin::Scene::paintSimpleScreen(int, QRegion) (this=this@entry=0x55b7c6febd30, orig_mask=orig_mask@entry=8, region=...) at ./scene.cpp:376
#19 0x00007f44bae6c197 in KWin::Scene::finalPaintScreen(int, QRegion, KWin::ScreenPaintData&) (this=this@entry=0x55b7c6febd30, mask=mask@entry=8, region=..., data=...) at ./scene.cpp:201
#20 0x00007f44bae7a505 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) (this=<optimized out>, mask=8, region=..., data=...) at ./effects.cpp:379
#21 0x00007f44b7e81401 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwineffects.so.11
#22 0x00007f44bae7a4ad in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) (this=this@entry=0x55b7c7249c20, mask=8, region=..., data=...) at ./effects.cpp:376
#23 0x00007f44bae6be8e in KWin::Scene::paintScreen(int*, QRegion const&, QRegion const&, QRegion*, QRegion*, QMatrix4x4 const&, QRect const&) (this=this@entry=0x55b7c6febd30, mask=mask@entry=0x7ffee9429ec4, damage=..., repaint=..., updateRegion=updateRegion@entry=0x7ffee9429ec8, validRegion=validRegion@entry=0x7ffee9429ed0, projection=..., outputGeometry=...) at ./scene.cpp:151
#24 0x00007f448b1f0edf in KWin::SceneXrender::paint(QRegion, QList<KWin::Toplevel*>) (this=this@entry=0x55b7c6febd30, damage=..., toplevels=...) at ./plugins/scenes/xrender/scene_xrender.cpp:259
#25 0x00007f44bae5e412 in KWin::Compositor::performCompositing() (this=0x55b7c701b630) at ./composite.cpp:747
#26 0x00007f44b86e807b in QObject::event(QEvent*) (this=0x55b7c701b630, e=<optimized out>) at kernel/qobject.cpp:1269
#27 0x00007f44b943683c in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x55b7c6f77c40, receiver=receiver@entry=0x55b7c701b630, e=e@entry=0x7ffee942a300) at kernel/qapplication.cpp:3722
#28 0x00007f44b943e104 in QApplication::notify(QObject*, QEvent*) (this=0x7ffee942a5b0, receiver=0x55b7c701b630, e=0x7ffee942a300) at kernel/qapplication.cpp:3481
#29 0x00007f44b86b88d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x55b7c701b630, event=event@entry=0x7ffee942a300) at kernel/qcoreapplication.cpp:1024
#30 0x00007f44b8710d2e in QCoreApplication::sendEvent(QObject*, QEvent*) (event=0x7ffee942a300, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:233
#31 0x00007f44b8710d2e in QTimerInfoList::activateTimers() (this=this@entry=0x55b7c6fc5210) at kernel/qtimerinfo_unix.cpp:643
#32 0x00007f44b870e10c in QEventDispatcherUNIXPrivate::activateTimers() (this=this@entry=0x55b7c6fc5170) at kernel/qeventdispatcher_unix.cpp:249
#33 0x00007f44b870eee2 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=<optimized out>, flags=...) at kernel/qeventdispatcher_unix.cpp:514
#34 0x00007f44a287866d in QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=<optimized out>, flags=...) at qunixeventdispatcher.cpp:68
#35 0x00007f44b86b690a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffee942a4c0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#36 0x00007f44b86bf9b4 in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1297
#37 0x00007f44bb5f0dbb in kdemain () at /usr/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#38 0x00007f44bb218b97 in __libc_start_main (main=0x55b7c5a61730, argc=1, argv=0x7ffee942a748, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffee942a738) at ../csu/libc-start.c:310
#39 0x000055b7c5a6176a in _start ()
quit
Detaching from program: /usr/bin/kwin_x11, process 17277
[/CONSOLE]
[CONSOLE]
#0 0x00007f5579db6bf9 in __GI___poll (fds=fds@entry=0x7ffde3d28dd8, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007f557eddb747 in poll (__timeout=-1, __nfds=1, __fds=0x7ffde3d28dd8) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2 0x00007f557eddb747 in _xcb_conn_wait (c=c@entry=0x55ce34f5fdd0, cond=cond@entry=0x55ce46f54d18, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:479
#3 0x00007f557eddd45a in xcb_wait_for_special_event (c=0x55ce34f5fdd0, se=0x55ce46f54cf0) at ../../src/xcb_in.c:795
#4 0x00007f5558cbf6fb in dri3_wait_for_event_locked (draw=0x55ce477a4ee8) at ../src/loader/loader_dri3_helper.c:545
#5 0x00007f5558cbf848 in dri3_find_back (draw=draw@entry=0x55ce477a4ee8) at ../src/loader/loader_dri3_helper.c:670
#6 0x00007f5558cc0abe in dri3_get_buffer (format=format@entry=4107, buffer_type=buffer_type@entry=loader_dri3_buffer_back, draw=draw@entry=0x55ce477a4ee8, driDrawable=0x55ce47194cf0) at ../src/loader/loader_dri3_helper.c:1800
#7 0x00007f5558cc1a19 in loader_dri3_get_buffers (driDrawable=driDrawable@entry=0x55ce47194cf0, format=4107, stamp=stamp@entry=0x55ce47194d20, loaderPrivate=loaderPrivate@entry=0x55ce477a4ee8, buffer_mask=<optimized out>, buffer_mask@entry=1, buffers=buffers@entry=0x7ffde3d290a0) at ../src/loader/loader_dri3_helper.c:2019
#8 0x00007f54cec3d2e9 in intel_update_image_buffers (drawable=0x55ce47194cf0, brw=0x55ce35f34390) at ../src/mesa/drivers/dri/i965/brw_context.c:1879
#9 0x00007f54cec3d2e9 in intel_update_renderbuffers (context=context@entry=0x55ce35f275b0, drawable=drawable@entry=0x55ce47194cf0) at ../src/mesa/drivers/dri/i965/brw_context.c:1508
#10 0x00007f54cec3d675 in intel_prepare_render (brw=brw@entry=0x55ce35f34390) at ../src/mesa/drivers/dri/i965/brw_context.c:1529
#11 0x00007f54cec389b9 in brw_clear (ctx=0x55ce35f34390, mask=50) at ../src/mesa/drivers/dri/i965/brw_clear.c:254
#12 0x00007f557e20ff88 in QSGBatchRenderer::Renderer::renderBatches() (this=this@entry=0x55ce385bad80) at scenegraph/coreapi/qsgbatchrenderer.cpp:2542
#13 0x00007f557e21585e in QSGBatchRenderer::Renderer::render() (this=<optimized out>) at scenegraph/coreapi/qsgbatchrenderer.cpp:2768
#14 0x00007f557e2062a0 in QSGRenderer::renderScene(QSGBindable const&) (this=0x55ce385bad80, bindable=...) at scenegraph/coreapi/qsgrenderer.cpp:243
#15 0x00007f557e20675b in QSGRenderer::renderScene(unsigned int) (this=<optimized out>, fboId=<optimized out>) at scenegraph/coreapi/qsgrenderer.cpp:196
#16 0x00007f557e240af0 in QSGDefaultRenderContext::renderNextFrame(QSGRenderer*, unsigned int) (this=0x55ce3534cd10, renderer=0x55ce385bad80, fboId=<optimized out>) at scenegraph/qsgdefaultrendercontext.cpp:181
#17 0x00007f557e29eb68 in QQuickWindowPrivate::renderSceneGraph(QSize const&) (this=this@entry=0x55ce35a0e740, size=...) at items/qquickwindow.cpp:474
#18 0x00007f557e232eb9 in QSGGuiThreadRenderLoop::renderWindow(QQuickWindow*) (this=0x55ce3536afc0, window=<optimized out>) at scenegraph/qsgrenderloop.cpp:431
#19 0x00007f557e2a8726 in QQuickWindow::event(QEvent*) (this=0x55ce35a03f40, e=0x7ffde3d299a0) at items/qquickwindow.cpp:1588
#20 0x000055ce344a88db in PanelView::event(QEvent*) (this=0x55ce35a03f40, e=0x7ffde3d299a0) at ./shell/panelview.cpp:925
#21 0x00007f557b6ae83c in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x55ce34f4fad0, receiver=receiver@entry=0x55ce35a03f40, e=e@entry=0x7ffde3d299a0) at kernel/qapplication.cpp:3722
#22 0x00007f557b6b6104 in QApplication::notify(QObject*, QEvent*) (this=0x7ffde3d2a0c0, receiver=0x55ce35a03f40, e=0x7ffde3d299a0) at kernel/qapplication.cpp:3481
#23 0x00007f557a6a68d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=receiver@entry=0x55ce35a03f40, event=event@entry=0x7ffde3d299a0) at kernel/qcoreapplication.cpp:1024
#24 0x00007f557aefe1a1 in QCoreApplication::sendEvent(QObject*, QEvent*) (event=0x7ffde3d299a0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:233
#25 0x00007f557aefe1a1 in QWindowPrivate::deliverUpdateRequest() (this=this@entry=0x55ce35a0e740) at kernel/qwindow.cpp:2305
#26 0x00007f557aefe6b9 in QWindow::event(QEvent*) (this=this@entry=0x55ce35a03f40, ev=ev@entry=0x7ffde3d29d70) at kernel/qwindow.cpp:2276
#27 0x00007f557e2a86c5 in QQuickWindow::event(QEvent*) (this=0x55ce35a03f40, e=0x7ffde3d29d70) at items/qquickwindow.cpp:1607
#28 0x000055ce344a88db in PanelView::event(QEvent*) (this=0x55ce35a03f40, e=0x7ffde3d29d70) at ./shell/panelview.cpp:925
#29 0x00007f557b6ae83c in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x55ce34f4fad0, receiver=receiver@entry=0x55ce35a03f40, e=e@entry=0x7ffde3d29d70) at kernel/qapplication.cpp:3722
#30 0x00007f557b6b6104 in QApplication::notify(QObject*, QEvent*) (this=0x7ffde3d2a0c0, receiver=0x55ce35a03f40, e=0x7ffde3d29d70) at kernel/qapplication.cpp:3481
#31 0x00007f557a6a68d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x55ce35a03f40, event=event@entry=0x7ffde3d29d70) at kernel/qcoreapplication.cpp:1024
#32 0x00007f557a6fed2e in QCoreApplication::sendEvent(QObject*, QEvent*) (event=0x7ffde3d29d70, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:233
#33 0x00007f557a6fed2e in QTimerInfoList::activateTimers() (this=this@entry=0x55ce34f7afa0) at kernel/qtimerinfo_unix.cpp:643
#34 0x00007f557a6ff4f1 in timerSourceDispatch(GSource*, GSourceFunc, gpointer) (source=source@entry=0x55ce34f7af40) at kernel/qeventdispatcher_glib.cpp:182
#35 0x00007f557491f417 in g_main_dispatch (context=0x7f5564004ff0) at ../../../../glib/gmain.c:3176
#36 0x00007f557491f417 in g_main_context_dispatch (context=context@entry=0x7f5564004ff0) at ../../../../glib/gmain.c:3829
#37 0x00007f557491f650 in g_main_context_iterate (context=context@entry=0x7f5564004ff0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3902
#38 0x00007f557491f6dc in g_main_context_iteration (context=0x7f5564004ff0, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3963
#39 0x00007f557a6ff88f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x55ce34fa0db0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#40 0x00007f557a6a490a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffde3d29fc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#41 0x00007f557a6ad9b4 in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1297
#42 0x000055ce34499d6a in main(int, char**) (argc=<optimized out>, argv=<optimized out>) at ./shell/main.cpp:166
quit
Detaching from program: /usr/bin/plasmashell, process 17281
[/CONSOLE]
After a reboot:
Code:
[CONSOLE] $ qdbus org.kde.KWin /KWin supportInformation KWin Support Information: The following information should be used when requesting support on e.g. http://forum.kde.org. It provides information about the currently running instance, which options are used, what OpenGL driver and which effects are running. Please post the information provided underneath this introductory text to a paste bin service like http://paste.kde.org instead of pasting into support threads. ========================== Version ======= KWin version: 5.12.9 Qt Version: 5.9.5 Qt compile version: 5.9.5 XCB compile version: 1.13 Operation Mode: X11 only Build Options ============= KWIN_BUILD_DECORATIONS: yes KWIN_BUILD_TABBOX: yes KWIN_BUILD_ACTIVITIES: yes HAVE_INPUT: yes HAVE_DRM: yes HAVE_GBM: yes HAVE_X11_XCB: yes HAVE_EPOXY_GLX: yes HAVE_WAYLAND_EGL: yes X11 === Vendor: The X.Org Foundation Vendor Release: 12005000 Protocol Version/Revision: 11/0 SHAPE: yes; Version: 0x11 RANDR: yes; Version: 0x14 DAMAGE: yes; Version: 0x11 Composite: yes; Version: 0x4 RENDER: yes; Version: 0xb XFIXES: yes; Version: 0x50 SYNC: yes; Version: 0x31 GLX: yes; Version: 0x0 Decoration ========== Plugin: org.kde.breeze Theme: Blur: 0 onAllDesktopsAvailable: false alphaChannelSupported: true closeOnDoubleClickOnMenu: false decorationButtonsLeft: 0, 2 decorationButtonsRight: 6, 3, 4, 5 borderSize: 3 gridUnit: 10 font: Noto Sans,10,-1,0,50,0,0,0,0,0,Regular smallSpacing: 2 largeSpacing: 10 Platform ========== Name: KWin::X11StandalonePlatform Options ======= focusPolicy: 0 nextFocusPrefersMouse: false clickRaise: true autoRaise: false autoRaiseInterval: 0 delayFocusInterval: 0 shadeHover: false shadeHoverInterval: 250 separateScreenFocus: false placement: 4 focusPolicyIsReasonable: true borderSnapZone: 10 windowSnapZone: 10 centerSnapZone: 0 snapOnlyWhenOverlapping: false rollOverDesktops: false focusStealingPreventionLevel: 2 legacyFullscreenSupport: false operationTitlebarDblClick: 5000 operationMaxButtonLeftClick: 5000 operationMaxButtonMiddleClick: 5015 operationMaxButtonRightClick: 5014 commandActiveTitlebar1: 0 commandActiveTitlebar2: 30 commandActiveTitlebar3: 2 commandInactiveTitlebar1: 4 commandInactiveTitlebar2: 30 commandInactiveTitlebar3: 2 commandWindow1: 7 commandWindow2: 8 commandWindow3: 8 commandWindowWheel: 31 commandAll1: 10 commandAll2: 3 commandAll3: 14 keyCmdAllModKey: 16777251 showGeometryTip: false condensedTitle: false electricBorderMaximize: true electricBorderTiling: true electricBorderCornerRatio: 0.25 borderlessMaximizedWindows: false killPingTimeout: 5000 hideUtilityWindowsForInactive: true inactiveTabsSkipTaskbar: false autogroupSimilarWindows: false autogroupInForeground: true compositingMode: 2 useCompositing: true compositingInitialized: true hiddenPreviews: 1 glSmoothScale: 2 xrenderSmoothScale: true maxFpsInterval: 16666666 refreshRate: 0 vBlankTime: 6000000 glStrictBinding: true glStrictBindingFollowsDriver: true glCoreProfile: false glPreferBufferSwap: 112 glPlatformInterface: 1 windowsBlockCompositing: true Screen Edges ============ desktopSwitching: false desktopSwitchingMovingClients: false cursorPushBackDistance: 1x1 timeThreshold: 150 reActivateThreshold: 350 actionTopLeft: 0 actionTop: 0 actionTopRight: 0 actionRight: 0 actionBottomRight: 0 actionBottom: 0 actionBottomLeft: 0 actionLeft: 0 Screens ======= Multi-Head: no Active screen follows mouse: no Number of Screens: 1 Screen 0: --------- Name: LVDS-1 Geometry: 0,0,1600x900 Scale: 1 Refresh Rate: 60.007 Compositing =========== Compositing is active Compositing Type: XRender Loaded Effects: --------------- kwin4_effect_frozenapp kwin4_effect_windowaperture kwin4_effect_morphingpopups kwin4_effect_dialogparent slide screenshot desktopgrid presentwindows highlightwindow screenedge kscreen Currently Active Effects: ------------------------- Effect Settings: ---------------- kwin4_effect_frozenapp: kwin4_effect_windowaperture: kwin4_effect_morphingpopups: kwin4_effect_dialogparent: slide: screenshot: desktopgrid: zoomDuration: 1 border: 10 desktopNameAlignment: 0 layoutMode: 0 customLayoutRows: 2 usePresentWindows: true presentwindows: layoutMode: 0 showCaptions: true showIcons: true doNotCloseWindows: false ignoreMinimized: false accuracy: 20 fillGaps: true fadeDuration: 1 showPanel: false leftButtonWindow: 1 rightButtonWindow: 2 middleButtonWindow: 0 leftButtonDesktop: 2 middleButtonDesktop: 0 rightButtonDesktop: 0 highlightwindow: screenedge: kscreen: [/CONSOLE]
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