Bug 288271

Are you using Desktop Effects? If yes, is the screen snapshot helper effect enabled or does changing compositing mode or effects help?

Indeed disabling the compositing helps and also switching to xrender, only affects with OpenGL compositing enabled.

I'm using the latest nVidia propietary driver.

Thanks, sounds like the problem is in the OpenGL implementation of the screen snapshot effect, or in the OpenGL drivers. Which video/GL drivers are you using?

Oh, comment #2 already mentions them ...

nope, but i was able to crash the screenshot effect (no dealy, clicking where ksnapshot used to be - maybe some close effect)

For the records:
-----------------

Application: KWin (kwin), signal: Aborted
[Current thread is 1 (Thread 0xb05d1720 (LWP 2177))]

Thread 2 (Thread 0xad311b70 (LWP 2187)):
#0  0xb77d4424 in __kernel_vsyscall ()
#1  0xb60428fb in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0xb6c97fe9 in ?? () from /usr/lib/libQtScript.so.4
#3  0xb6c9802f in ?? () from /usr/lib/libQtScript.so.4
#4  0xb5503a9c in ?? () from /usr/lib/libGL.so.1
#5  0x00000000 in ?? ()

Thread 1 (Thread 0xb05d1720 (LWP 2177)):
[KCrash Handler]
#7  0xb77d4424 in __kernel_vsyscall ()
#8  0xb51eeb9f in raise () from /lib/libc.so.6
#9  0xb51f0525 in abort () from /lib/libc.so.6
#10 0xb543b38d in __gnu_cxx::__verbose_terminate_handler() () from /usr/lib/libstdc++.so.6
#11 0xb5439123 in ?? () from /usr/lib/libstdc++.so.6
#12 0xb543915f in std::terminate() () from /usr/lib/libstdc++.so.6
#13 0xb5439dd2 in __cxa_pure_virtual () from /usr/lib/libstdc++.so.6
#14 0xb6ab7ce1 in KWin::WindowPaintData::WindowPaintData (this=0xbfb4e4e0, w=0x8c65020) at /home/src/KDE4/kde-workspace/kwin/libkwineffects/kwineffects.cpp:63
#15 0xad3e19fe in KWin::ScreenShotEffect::postPaintScreen (this=0x8c62ad0) at /home/src/KDE4/kde-workspace/kwin/effects/screenshot/screenshot.cpp:70
#16 0xb77568de in KWin::EffectsHandlerImpl::postPaintScreen (this=0x8a39e90) at /home/src/KDE4/kde-workspace/kwin/effects.cpp:228
#17 0xb773137f in KWin::Scene::paintScreen (this=0x890e4b0, mask=0xbfb4e744, region=0xbfb4e7d0) at /home/src/KDE4/kde-workspace/kwin/scene.cpp:159
#18 0xb7749d4d in KWin::SceneOpenGL::paint (this=0x890e4b0, damage=..., toplevels=...) at /home/src/KDE4/kde-workspace/kwin/scene_opengl_glx.cpp:459
#19 0xb772a96b in KWin::Workspace::performCompositing (this=0x895f698) at /home/src/KDE4/kde-workspace/kwin/composite.cpp:396
#20 0xb61c6d04 in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#21 0xb56d9a24 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#22 0xb56dedd3 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#23 0xb684d231 in KApplication::notify (this=0xbfb4eeb0, receiver=0x895f698, event=0xbfb4ebac) at /home/src/KDE4/kdelibs/kdeui/kernel/kapplication.cpp:311
#24 0xb76d4a7f in notify (e=0xbfb4ebac, o=0x895f698, this=0xbfb4eeb0) at /home/src/KDE4/kde-workspace/kwin/main.cpp:368
#25 KWin::Application::notify (this=0xbfb4eeb0, o=0x895f698, e=0xbfb4ebac) at /home/src/KDE4/kde-workspace/kwin/main.cpp:364
#26 0xb61aeb2e in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#27 0xb61def70 in ?? () from /usr/lib/libQtCore.so.4
#28 0xb61df7c7 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#29 0xb578e06e in ?? () from /usr/lib/libQtGui.so.4
#30 0xb61adb6d in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#31 0xb61addb1 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#32 0xb61b250d in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#33 0xb56d7894 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#34 0xb76d766d in kdemain (argc=2, argv=0xbfb4f114) at /home/src/KDE4/kde-workspace/kwin/main.cpp:525
#35 0x0804877b in main (argc=2, argv=0xbfb4f114) at /home/src/KDE4/BUILD_trunk/workspace/kwin/kwin_dummy.cpp:3

Git commit 57bd753c0f2f980b41d4ef5df812866f26c56e74 by Thomas Lübking.
Committed on 07/12/2011 at 15:04.
Pushed by luebking into branch 'master'.

sanitize closed screenshot windows, ignore deleted

CCBUG: 288271
REVIEW: 103350

M  +18   -4    kwin/effects/screenshot/screenshot.cpp
M  +3    -0    kwin/effects/screenshot/screenshot.h

http://commits.kde.org/kde-workspace/57bd753c0f2f980b41d4ef5df812866f26c56e74

The patch might indded also fix this bug, since i couldn't reproduce please have a try and update information on the bug.
Thanks.

Ok, will backport the commit and report if works asap.

After applying this commit, the issue reported here cannot be reproduced anymore, so you can close the bug.

=D

Many thanks for testing.