[Bug 1318584] Re: qt crashed when switching video out mode to external or internal only mode
** Changed in: qt Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318584 Title: qt crashed when switching video out mode to external or internal only mode To manage notifications about this bug go to: https://bugs.launchpad.net/checkbox-gui/+bug/1318584/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1318584] Re: qt crashed when switching video out mode to external or internal only mode
I'm setting this as WONTFIX since we're deprecating checkbox-gui. ** Changed in: checkbox-gui Status: Confirmed => Won't Fix -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318584 Title: qt crashed when switching video out mode to external or internal only mode To manage notifications about this bug go to: https://bugs.launchpad.net/checkbox-gui/+bug/1318584/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1318584] Re: qt crashed when switching video out mode to external or internal only mode
This should finally be fixed in Qt 5.4.2 that is now in wily (Ubuntu 15.10). There are some indications though that the problem is complex and some of the crasher cases are only fully addressed in Qt 5.5.0. This is on route to wily too although it might take time. See https://wiki.ubuntu.com/Touch/QtTesting on how to test Qt 5.5 if you still experience this problem on current wily's Qt 5.4.2. ** Changed in: qtbase-opensource-src (Ubuntu) Status: Confirmed = Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318584 Title: qt crashed when switching video out mode to external or internal only mode To manage notifications about this bug go to: https://bugs.launchpad.net/checkbox-gui/+bug/1318584/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1318584] Re: qt crashed when switching video out mode to external or internal only mode
** Changed in: oem-priority Status: Confirmed = Won't Fix ** Changed in: oem-priority/trusty Status: New = Won't Fix -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318584 Title: qt crashed when switching video out mode to external or internal only mode To manage notifications about this bug go to: https://bugs.launchpad.net/checkbox-gui/+bug/1318584/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1318584] Re: qt crashed when switching video out mode to external or internal only mode
** Changed in: checkbox-gui Assignee: Zygmunt Krynicki (zkrynicki) = (unassigned) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318584 Title: qt crashed when switching video out mode to external or internal only mode To manage notifications about this bug go to: https://bugs.launchpad.net/checkbox-gui/+bug/1318584/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1318584] Re: qt crashed when switching video out mode to external or internal only mode
It seems it's not completely stalled, there's activity in another bug report linked from the first one, and a claimed partial fix. I don't have a 14.04 machine to test on right now, so could someone else test: sudo apt-add-repository ppa:canonical-qt5-edgers/qt5-proper sudo apt update sudo apt dist-upgrade Notes: - The patch needed changes especially for 14.04's Qt 5.2.1, I'm not sure if it's functional still or if I broke something in the process - The qtbase for 14.10 (which I could have tested) failed one unit test with a crash, which could be caused by the patch since it has not happened before. - We will eventually get the fix anyway with 5.3.2 to 14.10 or 15.04 since it was included in upstream's 5.3.2 branch, after which a backport to 14.04 LTS is feasible even if we wouldn't cherry pick it for current 5.3.0 - See the builds and patches for 5.3.0 and 5.2.1 respectively at https://launchpad.net/~canonical-qt5-edgers/+archive/ubuntu/qt5-proper/+packages - feel free to get the original upstream patch (https://codereview.qt-project.org/#/c/93402/) and try backporting yourself in case some of my choices were erronous -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318584 Title: qt crashed when switching video out mode to external or internal only mode To manage notifications about this bug go to: https://bugs.launchpad.net/checkbox-gui/+bug/1318584/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1318584] Re: qt crashed when switching video out mode to external or internal only mode
@Marteen It seems the QT bug is stalled on their end. Is there some triage that's happening without updates to https://bugreports.qt- project.org/browse/QTBUG-40174 ? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318584 Title: qt crashed when switching video out mode to external or internal only mode To manage notifications about this bug go to: https://bugs.launchpad.net/checkbox-gui/+bug/1318584/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1318584] Re: qt crashed when switching video out mode to external or internal only mode
Timo, Marteen, any updates on this bug? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318584 Title: qt crashed when switching video out mode to external or internal only mode To manage notifications about this bug go to: https://bugs.launchpad.net/checkbox-gui/+bug/1318584/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1318584] Re: qt crashed when switching video out mode to external or internal only mode
I've now enough of Qt 5.3.1 (qtbase+qtxmlpatterns+qtdeclarative in qt5 -beta-proper ppa) to test also with a system-wide Qt installation: no difference in this crash compared to 5.3.0. Maarten's upstream bug report: https://bugreports.qt-project.org/browse/QTBUG-40174 Did Chris also contact upstream? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318584 Title: qt crashed when switching video out mode to external or internal only mode To manage notifications about this bug go to: https://bugs.launchpad.net/checkbox-gui/+bug/1318584/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1318584] Re: qt crashed when switching video out mode to external or internal only mode
(edit: yes he did, commented at https://bugreports.qt- project.org/browse/QTBUG-38326) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318584 Title: qt crashed when switching video out mode to external or internal only mode To manage notifications about this bug go to: https://bugs.launchpad.net/checkbox-gui/+bug/1318584/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1318584] Re: qt crashed when switching video out mode to external or internal only mode
Ok, I can reproduce the crash pretty easily here. Let's see what I can shake out with a full debug stack. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318584 Title: qt crashed when switching video out mode to external or internal only mode To manage notifications about this bug go to: https://bugs.launchpad.net/checkbox-gui/+bug/1318584/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1318584] Re: qt crashed when switching video out mode to external or internal only mode
So, the relevant madness appears to be: …snip all the glib detritus… ==30400== Invalid read of size 8 ==30400==at 0xE8587FB: QGLXContext::makeCurrent(QPlatformSurface*) (qglxintegration.cpp:333) ==30400==by 0x6339772: QOpenGLContext::makeCurrent(QSurface*) (qopenglcontext.cpp:812) ==30400==by 0x4F9626A: ??? (in /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5.3.0) ==30400==by 0x4F96F1D: ??? (in /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5.3.0) ==30400==by 0x6301448: QWindow::event(QEvent*) (qwindow.cpp:1956) ==30400==by 0x4FC0D72: QQuickWindow::event(QEvent*) (in /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5.3.0) ==30400==by 0x5B2E6DB: QApplicationPrivate::notify_helper(QObject*, QEvent*) (qapplication.cpp:3504) ==30400==by 0x5B33455: QApplication::notify(QObject*, QEvent*) (qapplication.cpp:3287) ==30400==by 0x6BDB9D4: QCoreApplication::notifyInternal(QObject*, QEvent*) (qcoreapplication.cpp:935) ==30400==by 0x62FABC5: QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) (qcoreapplication.h:240) ==30400==by 0x62FB724: QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) (qguiapplication.cpp:1566) ==30400==by 0x62E2427: QWindowSystemInterface::sendWindowSystemEvents(QFlagsQEventLoop::ProcessEventsFlag) (qwindowsysteminterface.cpp:579) ==30400== Address 0xe1a8f90 is 16 bytes inside a block of size 192 free'd ==30400==at 0x4C2C2BC: operator delete(void*) (vg_replace_malloc.c:503) ==30400==by 0xE83611A: QXcbConnection::updateScreens() (qxcbconnection.cpp:258) ==30400==by 0xE836814: QXcbConnection::handleXcbEvent(xcb_generic_event_t*) (qxcbconnection.cpp:928) ==30400==by 0xE837A0A: QXcbConnection::processXcbEvents() (qxcbconnection.cpp:1232) ==30400==by 0x6C0B5B5: QObject::event(QEvent*) (qobject.cpp:1241) ==30400==by 0x5B2E6DB: QApplicationPrivate::notify_helper(QObject*, QEvent*) (qapplication.cpp:3504) ==30400==by 0x5B33455: QApplication::notify(QObject*, QEvent*) (qapplication.cpp:3287) ==30400==by 0x6BDB9D4: QCoreApplication::notifyInternal(QObject*, QEvent*) (qcoreapplication.cpp:935) ==30400==by 0x6BDD826: QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (qcoreapplication.h:237) ==30400==by 0x6C33242: postEventSourceDispatch(_GSource*, int (*)(void*), void*) (qeventdispatcher_glib.cpp:279) ==30400==by 0x849FDE3: g_main_context_dispatch (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.4101.0) ==30400==by 0x84A0027: g_main_context_iterate.isra.24 (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.4101.0) ==30400== ==30400== Invalid read of size 8 ==30400==at 0xE858525: QGLXContext::swapBuffers(QPlatformSurface*) (qglxintegration.cpp:392) ==30400==by 0x6339A71: QOpenGLContext::swapBuffers(QSurface*) (qopenglcontext.cpp:906) ==30400==by 0x4F96A8B: ??? (in /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5.3.0) ==30400==by 0x4F96F1D: ??? (in /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5.3.0) ==30400==by 0x6301448: QWindow::event(QEvent*) (qwindow.cpp:1956) ==30400==by 0x4FC0D72: QQuickWindow::event(QEvent*) (in /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5.3.0) ==30400==by 0x5B2E6DB: QApplicationPrivate::notify_helper(QObject*, QEvent*) (qapplication.cpp:3504) ==30400==by 0x5B33455: QApplication::notify(QObject*, QEvent*) (qapplication.cpp:3287) ==30400==by 0x6BDB9D4: QCoreApplication::notifyInternal(QObject*, QEvent*) (qcoreapplication.cpp:935) ==30400==by 0x62FABC5: QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) (qcoreapplication.h:240) ==30400==by 0x62FB724: QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) (qguiapplication.cpp:1566) ==30400==by 0x62E2427: QWindowSystemInterface::sendWindowSystemEvents(QFlagsQEventLoop::ProcessEventsFlag) (qwindowsysteminterface.cpp:579) ==30400== Address 0xe1a8f90 is 16 bytes inside a block of size 192 free'd ==30400==at 0x4C2C2BC: operator delete(void*) (vg_replace_malloc.c:503) ==30400==by 0xE83611A: QXcbConnection::updateScreens() (qxcbconnection.cpp:258) ==30400==by 0xE836814: QXcbConnection::handleXcbEvent(xcb_generic_event_t*) (qxcbconnection.cpp:928) ==30400==by 0xE837A0A: QXcbConnection::processXcbEvents() (qxcbconnection.cpp:1232) ==30400==by 0x6C0B5B5: QObject::event(QEvent*) (qobject.cpp:1241) ==30400==by 0x5B2E6DB: QApplicationPrivate::notify_helper(QObject*, QEvent*) (qapplication.cpp:3504) ==30400==by 0x5B33455: QApplication::notify(QObject*, QEvent*) (qapplication.cpp:3287) ==30400==by 0x6BDB9D4: QCoreApplication::notifyInternal(QObject*, QEvent*) (qcoreapplication.cpp:935) ==30400==by 0x6BDD826: QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (qcoreapplication.h:237) ==30400==by 0x6C33242: postEventSourceDispatch(_GSource*, int (*)(void*), void*)
[Bug 1318584] Re: qt crashed when switching video out mode to external or internal only mode
So, it looks like there's a race between the destruction of an QXcbScreen in response to a RANDR event in handleXcbEvent and (a) expose handling and (b) some timer. I'll forward this upstream and might let someone more familiar with Qt take over. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318584 Title: qt crashed when switching video out mode to external or internal only mode To manage notifications about this bug go to: https://bugs.launchpad.net/checkbox-gui/+bug/1318584/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1318584] Re: qt crashed when switching video out mode to external or internal only mode
On utopic when I disable the active screen I get the following backtrace: pure virtual method called terminate called without an active exception Program received signal SIGABRT, Aborted. 0x74e4c117 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56 56 ../nptl/sysdeps/unix/sysv/linux/raise.c: Bestand of map bestaat niet. (gdb) bt #0 0x74e4c117 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56 #1 0x74e4d808 in __GI_abort () at abort.c:89 #2 0x75453285 in __gnu_cxx::__verbose_terminate_handler() () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6 #3 0x754510f6 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6 #4 0x75451141 in std::terminate() () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6 #5 0x75451c8f in __cxa_pure_virtual () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6 #6 0x75ef6efa in QPlatformScreen::physicalSize (this=optimized out) at kernel/qplatformscreen.cpp:139 #7 0x75f30772 in QScreen::physicalSize (this=this@entry=0x6620c0) at kernel/qscreen.cpp:243 #8 0x75f30819 in QScreen::physicalDotsPerInch (this=this@entry=0x6620c0) at kernel/qscreen.cpp:166 #9 0x778343d2 in QQuickScreenAttached::screenChanged (this=0x2e16f20, screen=0x6621b0) at items/qquickscreen.cpp:315 #10 0x759f391e in QMetaObject::activate (sender=sender@entry=0x7fffe7b0, signalOffset=optimized out, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fffd9a0) at kernel/qobject.cpp:3680 #11 0x759f3dd7 in QMetaObject::activate (sender=sender@entry=0x7fffe7b0, m=m@entry=0x765125c0 QWindow::staticMetaObject, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fffd9a0) at kernel/qobject.cpp:3546 #12 0x75f0b78f in QWindow::screenChanged (this=this@entry=0x7fffe7b0, _t1=_t1@entry=0x6621b0) at .moc/moc_qwindow.cpp:623 #13 0x75f0e160 in QWindowPrivate::setScreen (this=0x8aa3a0, newScreen=0x6621b0, recreate=optimized out) at kernel/qwindow.cpp:372 #14 0x75f0e2e2 in QWindow::screenDestroyed (this=0x7fffe7b0, object=optimized out) at kernel/qwindow.cpp:1637 #15 0x759f391e in QMetaObject::activate (sender=sender@entry=0x6620c0, signalOffset=optimized out, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fffdb60) at kernel/qobject.cpp:3680 #16 0x759f3dd7 in QMetaObject::activate (sender=sender@entry=0x6620c0, m=m@entry=0x75e1bf20 QObject::staticMetaObject, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fffdb60) at kernel/qobject.cpp:3546 #17 0x759f3e6f in QObject::destroyed (this=this@entry=0x6620c0, _t1=_t1@entry=0x6620c0) at .moc/moc_qobject.cpp:202 #18 0x759fb308 in QObject::~QObject (this=0x6620c0, __in_chrg=optimized out) at kernel/qobject.cpp:901 #19 0x7624faf7 in ~QScreen (this=0x6620c0, __in_chrg=optimized out) at .moc/../kernel/qscreen.h:64 #20 QScreen::~QScreen (this=0x6620c0, __in_chrg=optimized out) at .moc/../kernel/qscreen.h:64 #21 0x75ef70aa in QPlatformScreen::~QPlatformScreen (this=0x65b8e0, __in_chrg=optimized out) at kernel/qplatformscreen.cpp:65 #22 0x7fffedf51a99 in QXcbScreen::~QXcbScreen (this=0x65b8e0, __in_chrg=optimized out) at qxcbscreen.cpp:209 #23 0x7fffedf4511b in QXcbConnection::updateScreens (this=this@entry=0x6492b0) at qxcbconnection.cpp:258 #24 0x7fffedf45815 in QXcbConnection::handleXcbEvent (this=this@entry=0x6492b0, event=event@entry=0x7fffe4003490) at qxcbconnection.cpp:928 #25 0x7fffedf46a0b in QXcbConnection::processXcbEvents (this=0x6492b0) at qxcbconnection.cpp:1232 #26 0x759f45b6 in QObject::event (this=0x6492b0, e=optimized out) at kernel/qobject.cpp:1241 #27 0x768e66dc in QApplicationPrivate::notify_helper (this=this@entry=0x63cce0, receiver=receiver@entry=0x6492b0, e=e@entry=0x7fffe4004260) at kernel/qapplication.cpp:3504 #28 0x768eb456 in QApplication::notify (this=0x7fffe750, receiver=0x6492b0, e=0x7fffe4004260) at kernel/qapplication.cpp:3287 #29 0x759c49d5 in QCoreApplication::notifyInternal (this=0x7fffe750, receiver=0x6492b0, event=event@entry=0x7fffe4004260) at kernel/qcoreapplication.cpp:935 #30 0x759c6827 in sendEvent (event=0x7fffe4004260, receiver=optimized out) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:237 #31 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x63ce40) at kernel/qcoreapplication.cpp:1539 #32 0x759c6e58 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1397 #33 0x75a1c243 in postEventSourceDispatch (s=0x6ca730) at kernel/qeventdispatcher_glib.cpp:279 #34 0x73beade4 in g_main_context_dispatch () from
[Bug 1318584] Re: qt crashed when switching video out mode to external or internal only mode
For completeness sake, here's mine on Latitude D630 (Intel 965GM graphics), also inside qglxintegration.cpp but slightly different. Program received signal SIGSEGV, Segmentation fault. 0x7fffee0aa81c in QGLXContext::swapBuffers (this=0x81d790, surface=0x638450) at qglxintegration.cpp:392 (gdb) bt #0 0x7fffee0aa81c in QGLXContext::swapBuffers (this=0x81d790, surface=0x638450) at qglxintegration.cpp:392 #1 0x7641cd92 in QOpenGLContext::swapBuffers (this=0x6c6b60, surface=optimized out) at kernel/qopenglcontext.cpp:906 #2 0x77990a8c in QSGGuiThreadRenderLoop::renderWindow ( this=this@entry=0xb44110, window=0x7943c0) at scenegraph/qsgrenderloop.cpp:381 #3 0x77990f1e in QSGGuiThreadRenderLoop::exposureChanged ( this=0xb44110, window=0x7943c0) at scenegraph/qsgrenderloop.cpp:414 #4 0x763e4769 in QWindow::event (this=this@entry=0x7943c0, ev=ev@entry=0x7fffd8a0) at kernel/qwindow.cpp:1956 #5 0x779bad73 in QQuickWindow::event (this=0x7943c0, e=0x7fffd8a0) at items/qquickwindow.cpp:1339 #6 0x76b3a6dc in QApplicationPrivate::notify_helper ( this=this@entry=0x616560, receiver=receiver@entry=0x7943c0, e=e@entry=0x7fffd8a0) at kernel/qapplication.cpp:3504 #7 0x76b3f456 in QApplication::notify (this=0x7fffddc0, receiver=0x7943c0, e=0x7fffd8a0) at kernel/qapplication.cpp:3287 #8 0x75e999d5 in QCoreApplication::notifyInternal (this= 0x7fffddc0, receiver=receiver@entry=0x7943c0, event=event@entry=0x7fffd8a0) at kernel/qcoreapplication.cpp:935 #9 0x763ddee6 in sendSpontaneousEvent (event=0x7fffd8a0, receiver=0x7943c0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:240 #10 QGuiApplicationPrivate::processExposeEvent (e=0x62f080) at kernel/qguiapplication.cpp:2528 #11 0x763dea45 in QGuiApplicationPrivate::processWindowSystemEvent ( e=e@entry=0x62f080) at kernel/qguiapplication.cpp:1566 #12 0x763c54d8 in QWindowSystemInterface::sendWindowSystemEvents ( flags=...) at kernel/qwindowsysteminterface.cpp:579 #13 0x7fffee0ad000 in userEventSourceDispatch (source=optimized out) at eventdispatchers/qeventdispatcher_glib.cpp:78 #14 0x74512de4 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #15 0x74513028 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #16 0x745130cc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #17 0x75ef06bc in QEventDispatcherGlib::processEvents (this=0x6ece20, flags=...) at kernel/qeventdispatcher_glib.cpp:426 #18 0x75e978eb in QEventLoop::exec (this=this@entry=0x7fffdb60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212 #19 0x75e9ef46 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188 #20 0x763d60cc in QGuiApplication::exec () at kernel/qguiapplication.cpp:1436 #21 0x76b38e05 in QApplication::exec () at kernel/qapplication.cpp:2749 #22 0x00404301 in main (argc=2, argv=optimized out) at main.cpp:548 I also added one more patch to the qt5-beta1 PPA's qtbase: https://qt.gitorious.org/qt/qtbase/commit/075c36e39beedb33ec4b239d57075f54acb21acf Since Maarten experienced a trace that also concerned qtdeclarative (Qt Quick), it's worth mentioning there's an updated 5.3 branch snapshot build of qtdeclarative (made compatible with 5.3.0) soon finished building at: https://launchpad.net/~canonical- qt5-edgers/+archive/ubuntu/qt5-proper -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318584 Title: qt crashed when switching video out mode to external or internal only mode To manage notifications about this bug go to: https://bugs.launchpad.net/checkbox-gui/+bug/1318584/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1318584] Re: qt crashed when switching video out mode to external or internal only mode
It seems display driver is not important, I always hit this bug it seems, on nvidia, nouveau, radeon and intel. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318584 Title: qt crashed when switching video out mode to external or internal only mode To manage notifications about this bug go to: https://bugs.launchpad.net/checkbox-gui/+bug/1318584/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1318584] Re: qt crashed when switching video out mode to external or internal only mode
I think it only depends on whether opengl acceleration is enabled whether you get the former or latter behavior. ** No longer affects: libxcb (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318584 Title: qt crashed when switching video out mode to external or internal only mode To manage notifications about this bug go to: https://bugs.launchpad.net/checkbox-gui/+bug/1318584/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1318584] Re: qt crashed when switching video out mode to external or internal only mode
** Also affects: libxcb (Ubuntu) Importance: Undecided Status: New ** Description changed: - checkbox-gui crashed with following console outputs: pure virtual method called terminate called without an active exception Aborted (core dumped) Steps to reproduce: 1. open checkbox-gui 2. connected external display 3. switch video output mode, usually by using the common video output switch hotkey. Expected result: checkbox-gui still running when switching back to extended desktop video out mode. Actual result: checkbox-gui crashed + + --- + https://bugreports.qt-project.org/browse/QTBUG-39663 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318584 Title: qt crashed when switching video out mode to external or internal only mode To manage notifications about this bug go to: https://bugs.launchpad.net/checkbox-gui/+bug/1318584/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1318584] Re: qt crashed when switching video out mode to external or internal only mode
Unfortunately the two patches I cherry-picked for qtbase do not seem to fix the problem for me on that Dell laptop where I'm able to reproduce the problem. I also included updated libxcb since I saw http://cgit.freedesktop.org/xcb/libxcb/commit/?id=be0fe56c3bcad5124dcc6c47a2fad01acd16f71a mentioned in a bug report and the bug might be something fixable there too. For now I'm out of ideas. An X.org expert would be welcome to investigate, since most probably the bug is either in libxcb itself or the Qt's xcb plugin. ** Changed in: qtbase-opensource-src (Ubuntu) Assignee: Timo Jyrinki (timo-jyrinki) = (unassigned) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318584 Title: qt crashed when switching video out mode to external or internal only mode To manage notifications about this bug go to: https://bugs.launchpad.net/checkbox-gui/+bug/1318584/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1318584] Re: qt crashed when switching video out mode to external or internal only mode
I resurrected my 7 year old Dell and I was able to see the crash there. I've pushed a build to PPA where I grabbed some potential patches from upstream git: https://launchpad.net/~canonical-qt5-edgers/+archive/qt5-beta1 It's currently building, but it can be tested later. It requires Ubuntu 14.10, since we need to have a fix there first. What I did was that I checked out http://qt.gitorious.org/qt/qtbase , and searched around in both 5.3.1 and dev branches in files mentioned in the various backtraces: git log --decorate --stat ./src/plugins/platforms/xcb/qglxintegration.cpp git log --decorate --stat ./src/gui/kernel/qplatformscreen.cpp git log --stat --decorate src/plugins/platforms/xcb/qxcbwindow.cpp git log --stat --decorate ./src/gui/painting/qbackingstore.cpp git log --stat --decorate ./src/gui/kernel/qscreen.cpp If you can think of any other patches worth testing, please tell. I didn't find anything else that would sound like worth trying out. Upstream has not yet reacted specifically to the newly filed bug report, but regarding Zygmunt's findings in other upstream bug reports: https://bugreports.qt-project.org/browse/QTBUG-37327 - might be related https://bugreports.qt-project.org/browse/QTBUG-32681 - should be fixed already in 5.2.0 https://bugreports.qt-project.org/browse/QTBUG-32973 - still open, but at least the specific comment regarding a new function being implemented in Cocoa, it's nowadays also in XCB https://bugreports.qt-project.org/browse/QTBUG-38326 - might be related -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318584 Title: qt crashed when switching video out mode to external or internal only mode To manage notifications about this bug go to: https://bugs.launchpad.net/checkbox-gui/+bug/1318584/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1318584] Re: qt crashed when switching video out mode to external or internal only mode
** Changed in: oem-priority Status: New = Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318584 Title: qt crashed when switching video out mode to external or internal only mode To manage notifications about this bug go to: https://bugs.launchpad.net/checkbox-gui/+bug/1318584/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1318584] Re: qt crashed when switching video out mode to external or internal only mode
reported to upstream: https://bugreports.qt-project.org/browse/QTBUG-39663 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318584 Title: qt crashed when switching video out mode to external or internal only mode To manage notifications about this bug go to: https://bugs.launchpad.net/checkbox-gui/+bug/1318584/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1318584] Re: qt crashed when switching video out mode to external or internal only mode
--- core dump of the comment #30 --- ubuntu@201108-8941:~/lp1318584-qt$ gdb /usr/lib/x86_64-linux-gnu/qt5/bin/qmlscene --core=core GNU gdb (Ubuntu 7.7-0ubuntu3) 7.7 Copyright (C) 2014 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type show copying and show warranty for details. This GDB was configured as x86_64-linux-gnu. Type show configuration for configuration details. For bug reporting instructions, please see: http://www.gnu.org/software/gdb/bugs/. Find the GDB manual and other documentation resources online at: http://www.gnu.org/software/gdb/documentation/. For help, type help. Type apropos word to search for commands related to word... Reading symbols from /usr/lib/x86_64-linux-gnu/qt5/bin/qmlscene...Reading symbols from /usr/lib/debug/.build-id/5d/4471e44e258195b8860b8205330baa1def8312.debug...done. done. [New LWP 2632] [New LWP 2624] [New LWP 2626] [New LWP 2627] [New LWP 2631] [New LWP 2625] [New LWP 2623] [Thread debugging using libthread_db enabled] Using host libthread_db library /lib/x86_64-linux-gnu/libthread_db.so.1. warning: the debug information found in /usr/lib/x86_64-linux- gnu/dri/r200_dri.so does not match /usr/lib/x86_64-linux- gnu/dri/i965_dri.so (CRC mismatch). Core was generated by `/usr/lib/x86_64-linux-gnu/qt5/bin/qmlscene helloworld.qml'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x7f407c4ff282 in QGLXContext::makeCurrent (this=0x14112d0, surface=0x1535270) at qglxintegration.cpp:335 335 qglxintegration.cpp: No such file or directory. (gdb) thread apply all bt Thread 7 (Thread 0x7f408615b780 (LWP 2623)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x7f4083f4d7fa in wait (time=18446744073709551615, this=0x158d5f0) at thread/qwaitcondition_unix.cpp:136 #2 QWaitCondition::wait (this=optimized out, mutex=0x15538c0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208 #3 0x7f4085b2f3b1 in QSGThreadedRenderLoop::polishAndSync (this=this@entry=0x1589810, w=w@entry=0x12f0810) at scenegraph/qsgthreadedrenderloop.cpp:1112 #4 0x7f4085b2fee3 in QSGThreadedRenderLoop::handleExposure (this=this@entry=0x1589810, w=w@entry=0x12f0810) at scenegraph/qsgthreadedrenderloop.cpp:944 #5 0x7f4085b304c3 in QSGThreadedRenderLoop::exposureChanged (this=0x1589810, window=0x158aa40) at scenegraph/qsgthreadedrenderloop.cpp:881 #6 0x7f4084647a29 in QWindow::event (this=this@entry=0x158aa40, ev=ev@entry=0x7fffbc2702d0) at kernel/qwindow.cpp:1921 #7 0x7f4085b3 in QQuickWindow::event (this=0x158aa40, e=0x7fffbc2702d0) at items/qquickwindow.cpp:1292 #8 0x7f4084ce7c8c in QApplicationPrivate::notify_helper (this=this@entry=0x12936a0, receiver=receiver@entry=0x158aa40, e=e@entry=0x7fffbc2702d0) at kernel/qapplication.cpp:3486 #9 0x7f4084cece56 in QApplication::notify (this=0x7fffbc2707f0, receiver=0x158aa40, e=0x7fffbc2702d0) at kernel/qapplication.cpp:3236 #10 0x7f4084121c2d in QCoreApplication::notifyInternal (this=0x7fffbc2707f0, receiver=receiver@entry=0x158aa40, event=event@entry=0x7fffbc2702d0) at kernel/qcoreapplication.cpp:881 #11 0x7f4084641ea6 in sendSpontaneousEvent (event=0x7fffbc2702d0, receiver=0x158aa40) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:235 #12 QGuiApplicationPrivate::processExposeEvent (e=0x29fd3a0) at kernel/qguiapplication.cpp:2401 #13 0x7f4084642995 in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x29fd3a0) at kernel/qguiapplication.cpp:1473 #14 0x7f408462b858 in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:575 #15 0x7f407c5015b0 in userEventSourceDispatch (source=optimized out) at eventdispatchers/qeventdispatcher_glib.cpp:78 #16 0x7f4082811e04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #17 0x7f4082812048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #18 0x7f40828120ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #19 0x7f408416e98c in QEventDispatcherGlib::processEvents (this=0x1354fe0, flags=...) at kernel/qeventdispatcher_glib.cpp:426 #20 0x7f408412096b in QEventLoop::exec (this=this@entry=0x7fffbc270580, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212 #21 0x7f40841270e1 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1134 #22 0x7f408463a11c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1343 #23 0x7f4084ce6605 in QApplication::exec () at kernel/qapplication.cpp:2711 #24 0x00404111 in main (argc=2, argv=optimized out) at main.cpp:537 Thread 6 (Thread 0x7f406f164700 (LWP 2625)): #0 0x7f40835d7fbd in poll () at ../sysdeps/unix/syscall-template.S:81 #1
[Bug 1318584] Re: qt crashed when switching video out mode to external or internal only mode
I noted this bug could be reproduced not only in the external-only mode but also internal-only mode. Try this by 'System Settsings--Display to switch the mode from any status to external-only or internal-only mode. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1318584 Title: qt crashed when switching video out mode to external or internal only mode To manage notifications about this bug go to: https://bugs.launchpad.net/checkbox-gui/+bug/1318584/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1318584] Re: qt crashed when switching video out mode to external or internal only mode
--- core dump of the comment #28 --- ubuntu@201401-14529:~/lp1318584-qt$ gdb /usr/lib/x86_64-linux-gnu/qt5/bin/qmlscene --core=core GNU gdb (Ubuntu 7.7-0ubuntu3) 7.7 Copyright (C) 2014 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type show copying and show warranty for details. This GDB was configured as x86_64-linux-gnu. Type show configuration for configuration details. For bug reporting instructions, please see: http://www.gnu.org/software/gdb/bugs/. Find the GDB manual and other documentation resources online at: http://www.gnu.org/software/gdb/documentation/. For help, type help. Type apropos word to search for commands related to word... Reading symbols from /usr/lib/x86_64-linux-gnu/qt5/bin/qmlscene...Reading symbols from /usr/lib/debug/.build-id/5d/4471e44e258195b8860b8205330baa1def8312.debug...done. done. [New LWP 14911] [New LWP 14903] [New LWP 14904] [New LWP 14905] [New LWP 14906] [New LWP 14910] [New LWP 14902] [Thread debugging using libthread_db enabled] Using host libthread_db library /lib/x86_64-linux-gnu/libthread_db.so.1. warning: the debug information found in /usr/lib/x86_64-linux- gnu/dri/r200_dri.so does not match /usr/lib/x86_64-linux- gnu/dri/i965_dri.so (CRC mismatch). Core was generated by `/usr/lib/x86_64-linux-gnu/qt5/bin/qmlscene helloworld.qml'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x7f93e79c8f22 in QGLXContext::makeCurrent (this=0x2532d90, surface=0x2680e70) at qglxintegration.cpp:335 335 qglxintegration.cpp: No such file or directory. (gdb) (gdb) thread apply all bt Thread 7 (Thread 0x7f93f1620780 (LWP 14902)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x7f93ef4157fa in wait (time=18446744073709551615, this=0x265a7b0) at thread/qwaitcondition_unix.cpp:136 #2 QWaitCondition::wait (this=optimized out, mutex=0x26a61a0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208 #3 0x7f93f0ff6140 in QSGThreadedRenderLoop::releaseResources (this=optimized out, window=optimized out, inDestructor=optimized out) at scenegraph/qsgthreadedrenderloop.cpp:1061 #4 0x7f93f0ff737a in QSGThreadedRenderLoop::hide (this=0x26aca20, window=0x26b2ba0) at scenegraph/qsgthreadedrenderloop.cpp:840 #5 0x7f93efb0fb61 in QWindow::event (this=this@entry=0x26b2ba0, ev=ev@entry=0x7c0b5c10) at kernel/qwindow.cpp:1929 #6 0x7f93f101c553 in QQuickWindow::event (this=0x26b2ba0, e=0x7c0b5c10) at items/qquickwindow.cpp:1292 #7 0x7f93f01afc8c in QApplicationPrivate::notify_helper (this=this@entry=0x23a26a0, receiver=receiver@entry=0x26b2ba0, e=e@entry=0x7c0b5c10) at kernel/qapplication.cpp:3486 #8 0x7f93f01b4e56 in QApplication::notify (this=0x7c0b6a40, receiver=0x26b2ba0, e=0x7c0b5c10) at kernel/qapplication.cpp:3236 #9 0x7f93ef5e9c2d in QCoreApplication::notifyInternal (this=0x7c0b6a40, receiver=receiver@entry=0x26b2ba0, event=event@entry=0x7c0b5c10) at kernel/qcoreapplication.cpp:881 #10 0x7f93efb0e6fe in sendEvent (event=0x7c0b5c10, receiver=0x26b2ba0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:232 #11 QWindow::setVisible (this=this@entry=0x26b2ba0, visible=visible@entry=false) at kernel/qwindow.cpp:451 #12 0x7f93efb0e85a in QWindow::destroy (this=this@entry=0x26b2ba0) at kernel/qwindow.cpp:1499 #13 0x7f93efb0eace in QWindowPrivate::setScreen (this=0x26b4e50, newScreen=0x0, recreate=optimized out) at kernel/qwindow.cpp:357 #14 0x7f93efb0ec22 in QWindow::screenDestroyed (this=0x26b2ba0, object=optimized out) at kernel/qwindow.cpp:1605 #15 0x7f93ef6112a6 in QMetaObject::activate (sender=sender@entry=0x28fb4a0, signalOffset=optimized out, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7c0b5e30) at kernel/qobject.cpp:3569 #16 0x7f93ef6117d7 in QMetaObject::activate (sender=sender@entry=0x28fb4a0, m=m@entry=0x7f93efa1ff80 QObject::staticMetaObject, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7c0b5e30) at kernel/qobject.cpp:3444 #17 0x7f93ef61186f in QObject::destroyed (this=this@entry=0x28fb4a0, _t1=_t1@entry=0x28fb4a0) at .moc/moc_qobject.cpp:202 #18 0x7f93ef618853 in QObject::~QObject (this=0x28fb4a0, __in_chrg=optimized out) at kernel/qobject.cpp:807 #19 0x7f93efdab4b7 in ~QScreen (this=0x28fb4a0, __in_chrg=optimized out) at .moc/../kernel/qscreen.h:64 #20 QScreen::~QScreen (this=0x28fb4a0, __in_chrg=optimized out) at .moc/../kernel/qscreen.h:64 #21 0x7f93efaf9ca9 in QPlatformScreen::~QPlatformScreen (this=0x2405440, __in_chrg=optimized out) at kernel/qplatformscreen.cpp:65 #22 0x7f93e79b4429 in QXcbScreen::~QXcbScreen (this=0x2405440, __in_chrg=optimized out) at qxcbscreen.cpp:209
