SUMMARY System becomes unresponsive (hard restart required) after disconnecting the third display (via hdmi switch). Coredump created on this occasion. STEPS TO REPRODUCE 1. Disconnect third display (via hdmi switch - probably irrelevant) 2. Remaining two displays (connected via DVI) should refresh and show the reconfigured desktop - but they remain black - and no keyboard response can bring the system back. OBSERVED RESULT System hang and coredump created. EXPECTED RESULT System remains functional on a two display setup. SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: Manjaro 21.1.0 (available in About System) KDE Plasma Version: 5.22.4 KDE Frameworks Version: 5.85.0 Qt Version: 5.12.2 ADDITIONAL INFORMATION Seems to have started happening after the latest rolling update was applied. - How to provide the below file from /var/lib/systemd/coredump/ (file size limit of 4M)? -rw-r-----+ 1 root root 100M 30. srp 08.13 core.plasmashell.1000.3cad9d81173a4a84a9372a991fc17b9d.1330.1630304010000000.zst
Short of providing the coredump - this is what the journal contains: systemd-coredump[108225]: [🡕] Process 1330 (plasmashell) of user 1000 dumped core. Stack trace of thread 1330: #0 0x00007f1e49d92d22 raise (libc.so.6 + 0x3cd22) #1 0x00007f1e4c270064 _ZN6KCrash19defaultCrashHandlerEi (libKF5Crash.so.5 + 0x5064) #2 0x00007f1e49d92da0 __restore_rt (libc.so.6 + 0x3cda0) #3 0x00007f1e3f488fbb n/a (libGLX_nvidia.so.0 + 0x4dfbb) #4 0x00007f1e3f4c3fbe n/a (libGLX_nvidia.so.0 + 0x88fbe) #5 0x00007f1e47a01e03 n/a (libGLX.so.0 + 0x13e03) #6 0x00007f1e47a07715 n/a (libGLX.so.0 + 0x19715) #7 0x00007f1e440721ab n/a (libqxcb-glx-integration.so + 0xb1ab) #8 0x00007f1e4406f763 n/a (libqxcb-glx-integration.so + 0x8763) #9 0x00007f1e4a823b62 _ZN14QOpenGLContext6createEv (libQt5Gui.so.5 + 0x181b62) #10 0x00007f1e4be0d941 n/a (libQt5Quick.so.5 + 0x209941) #11 0x00007f1e4a7e83f5 _ZN7QWindow5eventEP6QEvent (libQt5Gui.so.5 + 0x1463f5) #12 0x00007f1e4b0e8ff6 _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x15aff6) #13 0x00007f1e4a3fd1aa _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5 + 0x2c31aa) #14 0x00007f1e4a7dd044 _ZN22QGuiApplicationPrivate18processExposeEventEPN29QWindowSystemInterfacePrivate11ExposeEventE (libQt5Gui.so.5 + 0x13b044) #15 0x00007f1e4a7b0b15 _ZN22QWindowSystemInterface22sendWindowSystemEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Gui.so.5 + 0x10eb15) #16 0x00007f1e44d06800 n/a (libQt5XcbQpa.so.5 + 0x63800) #17 0x00007f1e486ee10c g_main_context_dispatch (libglib-2.0.so.0 + 0x5410c) #18 0x00007f1e48741b99 n/a (libglib-2.0.so.0 + 0xa7b99) #19 0x00007f1e486eb871 g_main_context_iteration (libglib-2.0.so.0 + 0x51871)
*** This bug has been marked as a duplicate of bug 414805 ***