Created attachment 152680 [details] Stack trace for plasmashell SUMMARY When attempting to switch out displays via xrandr (as in, disabling what's enabled and enabling what's disabled), plasmashell hits a plasma-workspace assertion error and causes a crash+coredump STEPS TO REPRODUCE 1. Have more than one display 2. Have at least one display disabled 3. Switch out the displays via xrandr. For example: ``` xrandr --output DP-2 --off xrandr --output HDMI-1 --mode 3840x2160 --rate 120.00 ``` OBSERVED RESULT Plasmashell crashes EXPECTED RESULT Plasmashell does not crash SOFTWARE/OS VERSIONS Linux/KDE Plasma: (available in About System) KDE Plasma Version: 5.26.80 KDE Frameworks Version: 5.99.0 Qt Version: 5.15.6 ADDITIONAL INFORMATION Kernel Version: 5.19.13-arch1-1 (64-bit) Graphics Platform: X11 Mesa Version: 22.1.7 Attached is the relevant stacktrace, as it's rather long, but here's the initial assertion error: ``` Oct 09 19:50:06 melchior kscreen_backend_launcher[1145]: kscreen.xrandr: Emitting configChanged() Oct 09 19:50:06 melchior plasmashell[4108]: Trying to use rootObject before initialization is completed, whilst using setInitializationDelayed. Forcing completion Oct 09 19:50:06 melchior plasmashell[4108]: kf.service.services: The desktop entry file "" has Type= "Application" but no Exec line Oct 09 19:50:06 melchior plasmashell[4108]: ASSERT: "view->containment()->screen() == id || view->containment()->screen() == -1" in file /home/<username>/.cache/yay/plasma-workspace-git/src/plasma-workspace/shell/shellcorona.cpp, line 800 Oct 09 19:50:06 melchior plasmashell[4108]: 25 -- exe=/usr/bin/plasmashell Oct 09 19:50:06 melchior plasmashell[4108]: 13 -- platform=xcb Oct 09 19:50:06 melchior plasmashell[4108]: 11 -- display=:0 Oct 09 19:50:06 melchior plasmashell[4108]: 20 -- appname=plasmashell Oct 09 19:50:06 melchior plasmashell[4108]: 17 -- apppath=/usr/bin Oct 09 19:50:06 melchior plasmashell[4108]: 9 -- signal=6 Oct 09 19:50:06 melchior plasmashell[4108]: 9 -- pid=4108 Oct 09 19:50:06 melchior plasmashell[4108]: 19 -- appversion=5.26.80 Oct 09 19:50:06 melchior plasmashell[4108]: 19 -- programname=Plasma Oct 09 19:50:06 melchior plasmashell[4108]: 31 -- bugaddress=submit@bugs.kde.org Oct 09 19:50:06 melchior plasmashell[4108]: 12 -- startupid=0 Oct 09 19:50:06 melchior plasmashell[4108]: KCrash: crashing... crashRecursionCounter = 2 Oct 09 19:50:06 melchior plasmashell[4108]: KCrash: Application Name = plasmashell path = /usr/bin pid = 4108 Oct 09 19:50:06 melchior plasmashell[4108]: KCrash: Arguments: /usr/bin/plasmashell --no-respawn Oct 09 19:50:06 melchior plasmashell[4108]: KCrash: Attempting to start /usr/lib/drkonqi Oct 09 19:50:06 melchior kwin_x11[913]: kwin_core: Failed to focus 0x4000b0 (error 3) Oct 09 19:50:06 melchior kwin_x11[913]: kwin_core: Failed to focus 0x4000b0 (error 3) Oct 09 19:50:06 melchior kwin_x11[913]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 14317, resource id: 4194333, major code: 15 (QueryTree), minor code: 0 Oct 09 19:50:06 melchior kwin_x11[913]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 14338, resource id: 4194480, major code: 15 (QueryTree), minor code: 0 Oct 09 19:50:06 melchior kwin_x11[913]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 14346, resource id: 4194423, major code: 15 (QueryTree), minor code: 0 Oct 09 19:50:06 melchior kwin_x11[913]: qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 14353, resource id: 4194365, major code: 15 (QueryTree), minor code: 0 Oct 09 19:50:06 melchior kded5[912]: Service "org.kde.StatusNotifierHost-4108" unregistered Oct 09 19:50:06 melchior kded5[912]: org.kde.plasma.dataengine.geolocation: gpsd not found Oct 09 19:50:06 melchior kded5[912]: "location" Oct 09 19:50:07 melchior plasmashell[4108]: Unable to start Dr. Konqi Oct 09 19:50:07 melchior plasmashell[4108]: Re-raising signal for core dump handling. ```
#0 0x00007f38a94a6688 pthread_sigmask (libc.so.6 + 0x8d688) #1 0x00007f38a9451bfd sigprocmask (libc.so.6 + 0x38bfd) #2 0x00007f38abe24967 _ZN6KCrash15setCrashHandlerEPFviE (libKF5Crash.so.5 + 0x4967) #3 0x00007f38abe257d9 _ZN6KCrash19defaultCrashHandlerEi (libKF5Crash.so.5 + 0x57d9) #4 0x00007f38a9451a00 n/a (libc.so.6 + 0x38a00) #5 0x00007f38a94a164c n/a (libc.so.6 + 0x8864c) #6 0x00007f38a9451958 raise (libc.so.6 + 0x38958) #7 0x00007f38a943b53d abort (libc.so.6 + 0x2253d) #8 0x00007f38a9a9fede _ZNK14QMessageLogger5fatalEPKcz (libQt5Core.so.5 + 0x9fede) #9 0x00007f38a9a9ff3c _Z9qt_assertPKcS0_i (libQt5Core.so.5 + 0x9ff3c) #10 0x000055666a9f00cd n/a (plasmashell + 0x220cd) #11 0x00007f38a9cbd381 n/a (libQt5Core.so.5 + 0x2bd381) #12 0x00007f38a9cbf8df _ZN6QTimer7timeoutENS_14QPrivateSignalE (libQt5Core.so.5 + 0x2bf8df) #13 0x00007f38a9cb04c6 _ZN7QObject5eventEP6QEvent (libQt5Core.so.5 + 0x2b04c6) #14 0x00007f38aa978b1c _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x178b1c) #15 0x00007f38a9c8cb88 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5 + 0x28cb88) #16 0x00007f38a9cd6d53 _ZN14QTimerInfoList14activateTimersEv (libQt5Core.so.5 + 0x2d6d53) #17 0x00007f38a9cd7392 n/a (libQt5Core.so.5 + 0x2d7392) #18 0x00007f38a827081b g_main_context_dispatch (libglib-2.0.so.0 + 0x5581b) #19 0x00007f38a82c6ec9 n/a (libglib-2.0.so.0 + 0xabec9) #20 0x00007f38a826f0d2 g_main_context_iteration (libglib-2.0.so.0 + 0x540d2) #21 0x00007f38a9cd750c _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2d750c) #22 0x00007f38a9c8532c _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x28532c) #23 0x00007f38a9c8fe59 _ZN16QCoreApplication4execEv (libQt5Core.so.5 + 0x28fe59) #24 0x000055666a9f2446 n/a (plasmashell + 0x24446) #25 0x00007f38a943c290 n/a (libc.so.6 + 0x23290) #26 0x00007f38a943c34a __libc_start_main (libc.so.6 + 0x2334a) #27 0x000055666a9f2585 n/a (plasmashell + 0x24585)
Relevant assert: Oct 09 19:50:06 melchior plasmashell[4108]: ASSERT: "view->containment()->screen() == id || view->containment()->screen() == -1" in file /home/<username>/.cache/yay/plasma-workspace-git/src/plasma-workspace/shell/shellcorona.cpp, line 800
Should be fixed in 5.27.0