SUMMARY Scaling up the Konsole w/ ctrl++ and the global KDE scaling settings (display configuration) causes a segfault in libqt when starting Konsole. Not sure yet if the bug could be exploitable. Stacktrace: #0 0x00007f5faf781a90 in ?? () from /usr/lib/libQt5Gui.so.5 #1 0x00007f5fafa1f67c in QRasterPaintEngine::fillRect(QRectF const&, QSpanData*) () from /usr/lib/libQt5Gui.so.5 #2 0x00007f5fafa377f8 in QPainter::fillRect(QRect const&, QColor const&) () from /usr/lib/libQt5Gui.so.5 #3 0x00007f5fad209923 in QtWaylandClient::QWaylandShmBackingStore::beginPaint(QRegion const&) () from /usr/lib/libQt5WaylandClient.so.5 #4 0x00007f5faf95032e in QBackingStore::beginPaint(QRegion const&) () from /usr/lib/libQt5Gui.so.5 #5 0x00007f5fafe6b758 in ?? () from /usr/lib/libQt5Widgets.so.5 #6 0x00007f5fafe822d0 in QWidgetPrivate::syncBackingStore(QRegion const&) () from /usr/lib/libQt5Widgets.so.5 #7 0x00007f5fafeb71cb in ?? () from /usr/lib/libQt5Widgets.so.5 #8 0x00007f5fafe5fb5c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5 #9 0x00007f5faf329f48 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5 #10 0x00007f5faf7bb804 in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () from /usr/lib/libQt5Gui.so.5 #11 0x00007f5faf79a885 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Gui.so.5 #12 0x00007f5fad24aa75 in ?? () from /usr/lib/libQt5WaylandClient.so.5 #13 0x00007f5fad49d82b in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0 #14 0x00007f5fad4f4cc9 in ?? () from /usr/lib/libglib-2.0.so.0 #15 0x00007f5fad49c0e2 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0 #16 0x00007f5faf374c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5 #17 0x00007f5faf3226ec in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5 #18 0x00007f5faf32d219 in QCoreApplication::exec() () from /usr/lib/libQt5Core.so.5 #19 0x000055d9f8623b65 in ?? () #20 0x00007f5faec9e790 in __libc_start_call_main (main=main@entry=0x55d9f8622020, argc=argc@entry=0x1, argv=argv@entry=0x7ffd00463398) at ../sysdeps/nptl/libc_start_call_main.h:58 STEPS TO REPRODUCE 1. Increase font size to 16pt HACK. 2. Scale up to maximum with ctrl++ in Konsole. 3. Additionally in the Display Configuration of KDE Scale up to 150-175% OBSERVED RESULT Konsole crashes ion startup due the scaling issue in libqt. EXPECTED RESULT Konsole should start. SOFTWARE/OS VERSIONS Linux: 5.15.102-1-MANJARO KDE Plasma Version: 5.26.5 KDE Frameworks Version: 5.103.0 Qt Version: 5.15.8 ADDITIONAL INFORMATION
Please re-try with a current Qt 6 based release, there were a lot of Wayland changes in the stack.
Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging If you have already provided the requested information, please mark the bug as REPORTED so that the KDE team knows that the bug is ready to be confirmed. Thank you for helping us make KDE software even better for everyone!
Hi, this seems to be fixed now with the latest Qt 6. Thank you! Kind regards, Martin
This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!