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List:       kde-bugs-dist
Subject:    [kwin] [Bug 343551] Kwin hangs, stops drawing the screen and starts using 100% cpu inside nvidia-glc
From:       <auxsvr () gmail ! com>
Date:       2015-03-29 10:22:38
Message-ID: bug-343551-17878-x4DE6IPDbI () http ! bugs ! kde ! org/
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https://bugs.kde.org/show_bug.cgi?id=343551

--- Comment #38 from auxsvr@gmail.com ---
Under similar conditions I get the following backtrace while kwin_x11 uses 100%
CPU:

#0  0x00007f5a77d62a17 in sched_yield () at /lib64/libc.so.6
#1  0x00007f5a671d5e4e in  () at /usr/lib64/libnvidia-glcore.so.304.125
#2  0x00007f5a671d68f6 in  () at /usr/lib64/libnvidia-glcore.so.304.125
#3  0x00007f5a66fb5c2f in  () at /usr/lib64/libnvidia-glcore.so.304.125
#4  0x00007f5a7795d25e in KWin::SyncObject::~SyncObject() (this=0xbd7ef8,
__in_chrg=<optimized out>)
    at /usr/src/debug/kwin-5.2.2/scene_opengl.cpp:124
#5  0x00007f5a779612cc in KWin::SceneOpenGL::~SceneOpenGL() (this=0xbd7ee0,
__in_chrg=<optimized out>)
    at /usr/include/c++/4.8/array:81
#6  0x00007f5a779612cc in KWin::SceneOpenGL::~SceneOpenGL() (this=0xbd7ee0,
__in_chrg=<optimized out>)
    at /usr/src/debug/kwin-5.2.2/scene_opengl.cpp:242
#7  0x00007f5a779612cc in KWin::SceneOpenGL::~SceneOpenGL() (this=0xba53a0,
__in_chrg=<optimized out>)
    at /usr/src/debug/kwin-5.2.2/scene_opengl.cpp:415
#8  0x00007f5a77961359 in KWin::SceneOpenGL2::~SceneOpenGL2() (this=0xba53a0,
__in_chrg=<optimized out>)
    at /usr/src/debug/kwin-5.2.2/scene_opengl.cpp:966
#9  0x00007f5a77948657 in KWin::Compositor::finish() (this=this@entry=0x8e8490)
at /usr/src/debug/kwin-5.2.2/composite.cpp:337
#10 0x00007f5a77948c04 in
KWin::Compositor::suspend(KWin::Compositor::SuspendReason) (this=0x8e8490,
reason=<optimized out>)
    at /usr/src/debug/kwin-5.2.2/composite.cpp:508
#11 0x00007f5a75e4503f in QMetaObject::activate(QObject*, int, int, void**)
(a=0x7fff200490b0, r=0x8a58c0, this=0xcf0ea0)
    at ../../src/corelib/kernel/qobject_impl.h:124
#12 0x00007f5a75e4503f in QMetaObject::activate(QObject*, int, int, void**)
(sender=0xc338a0, signalOffset=<optimized out>, local_signal_index=<optimized
out>, argv=0x7fff200490b0) at kernel/qobject.cpp:3702
#13 0x00007f5a76acc662 in QAction::triggered(bool) () at
/usr/lib64/libQt5Widgets.so.5
#14 0x00007f5a76aceb48 in QAction::activate(QAction::ActionEvent) () at
/usr/lib64/libQt5Widgets.so.5

Should I file a new report?

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