<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<!DOCTYPE bugzilla SYSTEM "https://bugs.kde.org/page.cgi?id=bugzilla.dtd">

<bugzilla version="5.0.6"
          urlbase="https://bugs.kde.org/"
          
          maintainer="sysadmin@kde.org"
>

    <bug>
          <bug_id>402976</bug_id>
          
          <creation_ts>2019-01-07 19:24:10 +0000</creation_ts>
          <short_desc>KWin crash after resuming from suspend</short_desc>
          <delta_ts>2019-01-15 12:05:25 +0000</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>4</classification_id>
          <classification>Plasma</classification>
          <product>kwin</product>
          <component>general</component>
          <version>5.14.4</version>
          <rep_platform>Neon</rep_platform>
          <op_sys>Linux</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>DUPLICATE</resolution>
          <dup_id>372305</dup_id>
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords>drkonqi</keywords>
          <priority>NOR</priority>
          <bug_severity>crash</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>0</everconfirmed>
          <reporter name="Daniel Halens">DanielHalens</reporter>
          <assigned_to name="KWin default assignee">kwin-bugs-null</assigned_to>
          <cc>ebiyeidums</cc>
          
          <cf_commitlink></cf_commitlink>
          <cf_versionfixedin></cf_versionfixedin>
          <cf_sentryurl></cf_sentryurl>
          <votes>0</votes>

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1830916</commentid>
    <comment_count>0</comment_count>
    <who name="Daniel Halens">DanielHalens</who>
    <bug_when>2019-01-07 19:24:10 +0000</bug_when>
    <thetext>Application: kwin_x11 (5.14.4)

Qt Version: 5.11.2
Frameworks Version: 5.53.0
Operating System: Linux 4.18.0-13-generic x86_64
Distribution: KDE neon User Edition 5.14

-- Information about the crash:
- What I was doing when the application crashed:
Just resumed from suspend.
Issue happens only sometimes and I don&apos;t recall having anything different from other times.

- Custom settings of the application:
Nvidia propietary drivers 415.25
IIRC, I have the default settings for desktop effects

The crash can be reproduced sometimes.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library &quot;/lib/x86_64-linux-gnu/libthread_db.so.1&quot;.
[Current thread is 1 (Thread 0x7f8764905840 (LWP 9681))]

Thread 8 (Thread 0x7f872ffff700 (LWP 17654)):
#0  0x00007f8764270cf6 in __GI_ppoll (fds=fds@entry=0x7f87280014c8, nfds=nfds@entry=1, timeout=&lt;optimized out&gt;, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007f8761870d51 in ppoll (__ss=&lt;optimized out&gt;, __timeout=&lt;optimized out&gt;, __nfds=&lt;optimized out&gt;, __fds=&lt;optimized out&gt;) at /usr/include/x86_64-linux-gnu/bits/poll2.h:77
#2  0x00007f8761870d51 in qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x7f87280014c8) at kernel/qcore_unix.cpp:132
#3  0x00007f8761870d51 in qt_safe_poll(pollfd*, unsigned long, timespec const*) (fds=0x7f87280014c8, nfds=1, timeout_ts=timeout_ts@entry=0x0) at kernel/qcore_unix.cpp:153
#4  0x00007f876187245e in QEventDispatcherUNIX::processEvents(QFlags&lt;QEventLoop::ProcessEventsFlag&gt;) (this=&lt;optimized out&gt;, flags=...) at kernel/qeventdispatcher_unix.cpp:500
#5  0x00007f876181930a in QEventLoop::exec(QFlags&lt;QEventLoop::ProcessEventsFlag&gt;) (this=this@entry=0x7f872fffed40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#6  0x00007f8761644bba in QThread::exec() (this=this@entry=0x7f8744036100) at thread/qthread.cpp:525
#7  0x00007f875bd344f5 in QQmlThreadPrivate::run() (this=0x7f8744036100) at qml/ftw/qqmlthread.cpp:148
#8  0x00007f876164fadb in QThreadPrivate::start(void*) (arg=0x7f8744036100) at thread/qthread_unix.cpp:367
#9  0x00007f875d2a86db in start_thread (arg=0x7f872ffff700) at pthread_create.c:463
#10 0x00007f876427d88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f8742dad700 (LWP 30178)):
#0  0x00007f8764270cf6 in __GI_ppoll (fds=fds@entry=0x563556156378, nfds=nfds@entry=1, timeout=&lt;optimized out&gt;, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007f8761870d51 in ppoll (__ss=&lt;optimized out&gt;, __timeout=&lt;optimized out&gt;, __nfds=&lt;optimized out&gt;, __fds=&lt;optimized out&gt;) at /usr/include/x86_64-linux-gnu/bits/poll2.h:77
#2  0x00007f8761870d51 in qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x563556156378) at kernel/qcore_unix.cpp:132
#3  0x00007f8761870d51 in qt_safe_poll(pollfd*, unsigned long, timespec const*) (fds=0x563556156378, nfds=1, timeout_ts=timeout_ts@entry=0x0) at kernel/qcore_unix.cpp:153
#4  0x00007f876187245e in QEventDispatcherUNIX::processEvents(QFlags&lt;QEventLoop::ProcessEventsFlag&gt;) (this=&lt;optimized out&gt;, flags=...) at kernel/qeventdispatcher_unix.cpp:500
#5  0x00007f876181930a in QEventLoop::exec(QFlags&lt;QEventLoop::ProcessEventsFlag&gt;) (this=this@entry=0x7f8742dacd60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#6  0x00007f8761644bba in QThread::exec() (this=&lt;optimized out&gt;) at thread/qthread.cpp:525
#7  0x00007f876164fadb in QThreadPrivate::start(void*) (arg=0x563555e94590) at thread/qthread_unix.cpp:367
#8  0x00007f875d2a86db in start_thread (arg=0x7f8742dad700) at pthread_create.c:463
#9  0x00007f876427d88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f872d371700 (LWP 16725)):
#0  0x00007f875d2ae9f3 in futex_wait_cancelable (private=&lt;optimized out&gt;, expected=0, futex_word=0x563555e97d10) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f875d2ae9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x563555e97cc0, cond=0x563555e97ce8) at pthread_cond_wait.c:502
#2  0x00007f875d2ae9f3 in __pthread_cond_wait (cond=0x563555e97ce8, mutex=0x563555e97cc0) at pthread_cond_wait.c:655
#3  0x00007f876165094b in QWaitConditionPrivate::wait(unsigned long) (time=18446744073709551615, this=0x563555e97cc0) at thread/qwaitcondition_unix.cpp:143
#4  0x00007f876165094b in QWaitCondition::wait(QMutex*, unsigned long) (this=this@entry=0x7f87440232d8, mutex=mutex@entry=0x7f87440232d0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:215
#5  0x00007f875c45ab18 in QSGRenderThreadEventQueue::takeEvent(bool) (wait=true, this=0x7f87440232c8) at scenegraph/qsgthreadedrenderloop.cpp:245
#6  0x00007f875c45ab18 in QSGRenderThread::processEventsAndWaitForMore() (this=this@entry=0x7f8744023250) at scenegraph/qsgthreadedrenderloop.cpp:709
#7  0x00007f875c45af4a in QSGRenderThread::run() (this=0x7f8744023250) at scenegraph/qsgthreadedrenderloop.cpp:738
#8  0x00007f876164fadb in QThreadPrivate::start(void*) (arg=0x7f8744023250) at thread/qthread_unix.cpp:367
#9  0x00007f875d2a86db in start_thread (arg=0x7f872d371700) at pthread_create.c:463
#10 0x00007f876427d88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f8727859700 (LWP 9695)):
#0  0x00007f875d2ae9f3 in futex_wait_cancelable (private=&lt;optimized out&gt;, expected=0, futex_word=0x7f8760854fb8 &lt;QTWTF::pageheap_memory+57592&gt;) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f875d2ae9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f8760854f68 &lt;QTWTF::pageheap_memory+57512&gt;, cond=0x7f8760854f90 &lt;QTWTF::pageheap_memory+57552&gt;) at pthread_cond_wait.c:502
#2  0x00007f875d2ae9f3 in __pthread_cond_wait (cond=0x7f8760854f90 &lt;QTWTF::pageheap_memory+57552&gt;, mutex=0x7f8760854f68 &lt;QTWTF::pageheap_memory+57512&gt;) at pthread_cond_wait.c:655
#3  0x00007f876055f954 in QTWTF::TCMalloc_PageHeap::scavengerThread() (this=0x7f8760846ec0 &lt;QTWTF::pageheap_memory&gt;) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#4  0x00007f876055f999 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*) (context=&lt;optimized out&gt;) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#5  0x00007f875d2a86db in start_thread (arg=0x7f8727859700) at pthread_create.c:463
#6  0x00007f876427d88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f8735b79700 (LWP 9689)):
#0  0x00007f8764270cf6 in __GI_ppoll (fds=fds@entry=0x7f8730000d28, nfds=nfds@entry=1, timeout=&lt;optimized out&gt;, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007f8761870d51 in ppoll (__ss=&lt;optimized out&gt;, __timeout=&lt;optimized out&gt;, __nfds=&lt;optimized out&gt;, __fds=&lt;optimized out&gt;) at /usr/include/x86_64-linux-gnu/bits/poll2.h:77
#2  0x00007f8761870d51 in qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x7f8730000d28) at kernel/qcore_unix.cpp:132
#3  0x00007f8761870d51 in qt_safe_poll(pollfd*, unsigned long, timespec const*) (fds=0x7f8730000d28, nfds=1, timeout_ts=timeout_ts@entry=0x0) at kernel/qcore_unix.cpp:153
#4  0x00007f876187245e in QEventDispatcherUNIX::processEvents(QFlags&lt;QEventLoop::ProcessEventsFlag&gt;) (this=&lt;optimized out&gt;, flags=...) at kernel/qeventdispatcher_unix.cpp:500
#5  0x00007f876181930a in QEventLoop::exec(QFlags&lt;QEventLoop::ProcessEventsFlag&gt;) (this=this@entry=0x7f8735b78d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#6  0x00007f8761644bba in QThread::exec() (this=this@entry=0x5635558b0580) at thread/qthread.cpp:525
#7  0x00007f875bd344f5 in QQmlThreadPrivate::run() (this=0x5635558b0580) at qml/ftw/qqmlthread.cpp:148
#8  0x00007f876164fadb in QThreadPrivate::start(void*) (arg=0x5635558b0580) at thread/qthread_unix.cpp:367
#9  0x00007f875d2a86db in start_thread (arg=0x7f8735b79700) at pthread_create.c:463
#10 0x00007f876427d88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f8748dd3700 (LWP 9685)):
#0  0x00007f8764270cf6 in __GI_ppoll (fds=fds@entry=0x7f873c00eb78, nfds=nfds@entry=1, timeout=&lt;optimized out&gt;, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007f8761870d51 in ppoll (__ss=&lt;optimized out&gt;, __timeout=&lt;optimized out&gt;, __nfds=&lt;optimized out&gt;, __fds=&lt;optimized out&gt;) at /usr/include/x86_64-linux-gnu/bits/poll2.h:77
#2  0x00007f8761870d51 in qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x7f873c00eb78) at kernel/qcore_unix.cpp:132
#3  0x00007f8761870d51 in qt_safe_poll(pollfd*, unsigned long, timespec const*) (fds=0x7f873c00eb78, nfds=1, timeout_ts=timeout_ts@entry=0x0) at kernel/qcore_unix.cpp:153
#4  0x00007f876187245e in QEventDispatcherUNIX::processEvents(QFlags&lt;QEventLoop::ProcessEventsFlag&gt;) (this=&lt;optimized out&gt;, flags=...) at kernel/qeventdispatcher_unix.cpp:500
#5  0x00007f876181930a in QEventLoop::exec(QFlags&lt;QEventLoop::ProcessEventsFlag&gt;) (this=this@entry=0x7f8748dd2d30, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#6  0x00007f8761644bba in QThread::exec() (this=this@entry=0x7f875ae91d60 &lt;(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder&gt;) at thread/qthread.cpp:525
#7  0x00007f875ac19e45 in QDBusConnectionManager::run() (this=0x7f875ae91d60 &lt;(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder&gt;) at qdbusconnection.cpp:178
#8  0x00007f876164fadb in QThreadPrivate::start(void*) (arg=0x7f875ae91d60 &lt;(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder&gt;) at thread/qthread_unix.cpp:367
#9  0x00007f875d2a86db in start_thread (arg=0x7f8748dd3700) at pthread_create.c:463
#10 0x00007f876427d88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f874b878700 (LWP 9684)):
#0  0x00007f8764270bf9 in __GI___poll (fds=0x7f874b877c68, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8761383747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f876138536a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f874c96aed9 in QXcbEventReader::run() (this=0x563555676af0) at qxcbconnection.cpp:1391
#4  0x00007f876164fadb in QThreadPrivate::start(void*) (arg=0x563555676af0) at thread/qthread_unix.cpp:367
#5  0x00007f875d2a86db in start_thread (arg=0x7f874b878700) at pthread_create.c:463
#6  0x00007f876427d88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f8764905840 (LWP 9681)):
[KCrash Handler]
#6  0x00007f8760b6932e in KWin::ContrastEffect::uploadRegion(QVector2D*&amp;, QRegion const&amp;) (this=this@entry=0x563556331900, map=@0x7ffcd1a53f68: 0x7f872d556390, region=...) at ./effects/backgroundcontrast/contrast.cpp:281
#7  0x00007f8760b69404 in KWin::ContrastEffect::uploadGeometry(KWin::GLVertexBuffer*, QRegion const&amp;) (this=this@entry=0x563556331900, vbo=vbo@entry=0x563555b398f0, region=...) at ./effects/backgroundcontrast/contrast.cpp:299
#8  0x00007f8760b6a965 in KWin::ContrastEffect::doContrast(KWin::EffectWindow*, QRegion const&amp;, QRect const&amp;, float, QMatrix4x4 const&amp;) (this=this@entry=0x563556331900, w=w@entry=0x563555b32710, shape=..., screen=..., opacity=0, screenProjection=...) at ./effects/backgroundcontrast/contrast.cpp:442
#9  0x00007f8760b6b35b in KWin::ContrastEffect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&amp;) (this=0x563556331900, w=0x563555b32710, mask=2, region=..., data=...) at ./effects/backgroundcontrast/contrast.cpp:419
#10 0x00007f8763ddb11e in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&amp;) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#11 0x00007f8760ad8c85 in KWin::BlurEffect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&amp;) (this=&lt;optimized out&gt;, w=0x563555b32710, mask=2, region=..., data=...) at ./effects/blur/blur.cpp:567
#12 0x00007f8763ddb11e in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&amp;) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#13 0x00007f8760dc9ff0 in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&amp;) (this=&lt;optimized out&gt;, w=0x563555b32710, mask=2, region=..., data=...) at ./libkwineffects/kwineffects.cpp:629
#14 0x00007f8763ddb11e in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&amp;) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#15 0x00007f8760dc9ff0 in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&amp;) (this=&lt;optimized out&gt;, w=0x563555b32710, mask=2, region=..., data=...) at ./libkwineffects/kwineffects.cpp:629
#16 0x00007f8763ddb11e in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&amp;) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#17 0x00007f8763dc80c0 in KWin::Scene::finalPaintWindow(KWin::EffectWindowImpl*, int, QRegion, KWin::WindowPaintData&amp;) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#18 0x00007f8763ddafad in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&amp;) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#19 0x00007f8760b5ceba in KWin::KscreenEffect::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&amp;) (this=&lt;optimized out&gt;, w=0x563555b32710, mask=2, region=..., data=...) at ./effects/kscreen/kscreen.cpp:127
#20 0x00007f8763ddaf4e in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&amp;) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#21 0x00007f8760dc9e80 in KWin::Effect::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&amp;) (this=&lt;optimized out&gt;, w=0x563555b32710, mask=2, region=..., data=...) at ./libkwineffects/kwineffects.cpp:599
#22 0x00007f8763ddaf4e in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&amp;) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#23 0x00007f8760dc9e80 in KWin::Effect::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&amp;) (this=&lt;optimized out&gt;, w=0x563555b32710, mask=2, region=..., data=...) at ./libkwineffects/kwineffects.cpp:599
#24 0x00007f8763ddaf4e in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&amp;) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#25 0x00007f8760dd7327 in KWin::AnimationEffect::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&amp;) (this=&lt;optimized out&gt;, w=0x563555b32710, mask=2, region=..., data=...) at ./libkwineffects/kwinanimationeffect.cpp:644
#26 0x00007f8763ddaf4e in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&amp;) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#27 0x00007f8760dd7327 in KWin::AnimationEffect::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&amp;) (this=&lt;optimized out&gt;, w=0x563555b32710, mask=2, region=..., data=...) at ./libkwineffects/kwinanimationeffect.cpp:644
#28 0x00007f8763ddaf4e in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&amp;) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#29 0x00007f8763dce192 in KWin::Scene::paintWindow(KWin::Scene::Window*, int, QRegion, KWin::WindowQuadList) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#30 0x00007f8763dccf0c in KWin::Scene::paintSimpleScreen(int, QRegion) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#31 0x00007f8734721c82 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#32 0x00007f8763dcd727 in KWin::Scene::finalPaintScreen(int, QRegion, KWin::ScreenPaintData&amp;) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#33 0x00007f8763ddad05 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&amp;) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#34 0x00007f8760dc9dd1 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&amp;) (this=&lt;optimized out&gt;, mask=0, region=..., data=...) at ./libkwineffects/kwineffects.cpp:584
#35 0x00007f8763ddacad in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&amp;) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#36 0x00007f8760dc9dd1 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&amp;) (this=&lt;optimized out&gt;, mask=0, region=..., data=...) at ./libkwineffects/kwineffects.cpp:584
#37 0x00007f8763ddacad in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&amp;) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#38 0x00007f8760dc9dd1 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&amp;) (this=&lt;optimized out&gt;, mask=0, region=..., data=...) at ./libkwineffects/kwineffects.cpp:584
#39 0x00007f8763ddacad in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&amp;) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#40 0x00007f8760dc9dd1 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&amp;) (this=&lt;optimized out&gt;, mask=0, region=..., data=...) at ./libkwineffects/kwineffects.cpp:584
#41 0x00007f8763ddacad in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&amp;) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#42 0x00007f8760dc9dd1 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&amp;) (this=&lt;optimized out&gt;, mask=0, region=..., data=...) at ./libkwineffects/kwineffects.cpp:584
#43 0x00007f8763ddacad in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&amp;) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#44 0x00007f8763dcd41e in KWin::Scene::paintScreen(int*, QRegion const&amp;, QRegion const&amp;, QRegion*, QRegion*, QMatrix4x4 const&amp;, QRect const&amp;) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#45 0x00007f8734727df1 in KWin::SceneOpenGL::paint(QRegion, QList&lt;KWin::Toplevel*&gt;) () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#46 0x00007f8763dbfb12 in KWin::Compositor::performCompositing() () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#47 0x00007f876184ab9b in QObject::event(QEvent*) (this=0x5635556d4ac0, e=&lt;optimized out&gt;) at kernel/qobject.cpp:1273
#48 0x00007f87625a7e1c in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x56355566c6b0, receiver=receiver@entry=0x5635556d4ac0, e=e@entry=0x7ffcd1a556a0) at kernel/qapplication.cpp:3727
#49 0x00007f87625af3ef in QApplication::notify(QObject*, QEvent*) (this=0x7ffcd1a55950, receiver=0x5635556d4ac0, e=0x7ffcd1a556a0) at kernel/qapplication.cpp:3486
#50 0x00007f876181afe8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x5635556d4ac0, event=event@entry=0x7ffcd1a556a0) at kernel/qcoreapplication.cpp:1048
#51 0x00007f87618744be in QCoreApplication::sendEvent(QObject*, QEvent*) (event=0x7ffcd1a556a0, receiver=&lt;optimized out&gt;) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#52 0x00007f87618744be in QTimerInfoList::activateTimers() (this=this@entry=0x5635556b9600) at kernel/qtimerinfo_unix.cpp:643
#53 0x00007f87618718ec in QEventDispatcherUNIXPrivate::activateTimers() (this=this@entry=0x5635556b9560) at kernel/qeventdispatcher_unix.cpp:249
#54 0x00007f87618726c2 in QEventDispatcherUNIX::processEvents(QFlags&lt;QEventLoop::ProcessEventsFlag&gt;) (this=&lt;optimized out&gt;, flags=...) at kernel/qeventdispatcher_unix.cpp:514
#55 0x00007f874c9f69fd in QUnixEventDispatcherQPA::processEvents(QFlags&lt;QEventLoop::ProcessEventsFlag&gt;) (this=&lt;optimized out&gt;, flags=...) at qunixeventdispatcher.cpp:68
#56 0x00007f876181930a in QEventLoop::exec(QFlags&lt;QEventLoop::ProcessEventsFlag&gt;) (this=this@entry=0x7ffcd1a55860, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#57 0x00007f87618224d0 in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1336
#58 0x00007f8764555dab in kdemain () at /usr/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#59 0x00007f876417db97 in __libc_start_main (main=0x563554c02720, argc=3, argv=0x7ffcd1a55ae8, init=&lt;optimized out&gt;, fini=&lt;optimized out&gt;, rtld_fini=&lt;optimized out&gt;, stack_end=0x7ffcd1a55ad8) at ../csu/libc-start.c:310
#60 0x0000563554c0275a in _start ()

The reporter indicates this bug may be a duplicate of or related to bug 396264.

Possible duplicates by query: bug 399876, bug 399800, bug 396273, bug 396264, bug 396227.

Reported using DrKonqi</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1830919</commentid>
    <comment_count>1</comment_count>
    <who name="Vlad Zahorodnii">vlad.zahorodnii</who>
    <bug_when>2019-01-07 19:43:59 +0000</bug_when>
    <thetext>

*** This bug has been marked as a duplicate of bug 372305 ***</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1832184</commentid>
    <comment_count>2</comment_count>
      <attachid>117466</attachid>
    <who name="Elton Idumange">ebiyeidums</who>
    <bug_when>2019-01-15 12:05:25 +0000</bug_when>
    <thetext>Created attachment 117466
New crash information added by DrKonqi

kwin_x11 (5.13.5) using Qt 5.11.1

Waking up from suspend - What I was doing when the application crashed:

The login screen had missing chunks of pixels - Unusual behavior I noticed:

Besides sellecting the wallpaper of the login screen, nothing that I know of - Custom settings of the application:

-- Backtrace (Reduced):
#10 0x00007fb7f152a163 in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&amp;) () from /usr/lib/x86_64-linux-gnu/libkwin.so.5
[...]
#12 0x00007fb7f152a163 in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&amp;) () from /usr/lib/x86_64-linux-gnu/libkwin.so.5
#13 0x00007fb7f15168cc in KWin::Scene::finalPaintWindow(KWin::EffectWindowImpl*, int, QRegion, KWin::WindowPaintData&amp;) () from /usr/lib/x86_64-linux-gnu/libkwin.so.5
#14 0x00007fb7f1529ffb in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&amp;) () from /usr/lib/x86_64-linux-gnu/libkwin.so.5
[...]
#16 0x00007fb7f1529fa3 in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&amp;) () from /usr/lib/x86_64-linux-gnu/libkwin.so.5</thetext>
  </long_desc>
      
          <attachment
              isobsolete="0"
              ispatch="0"
              isprivate="0"
          >
            <attachid>117466</attachid>
            <date>2019-01-15 12:05:25 +0000</date>
            <delta_ts>2019-01-15 12:05:25 +0000</delta_ts>
            <desc>New crash information added by DrKonqi</desc>
            <filename>kwin_x11-20190115-115848.kcrash.txt</filename>
            <type>text/plain</type>
            <size>9853</size>
            <attacher name="Elton Idumange">ebiyeidums</attacher>
            
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          </attachment>
      

    </bug>

</bugzilla>