Created attachment 1560828 [details] systemd logs close to the moment where kwin wayland crashes Description of problem: Whenever the system has no connected monitor kwin_wayland segfaults. For example it is triggered when: - all the monitors are plugged off - the existing monitors are put into sleep mode by plasma - the monitors are turned off (this is not reproducible with all my monitors just with one) If you have two or more monitors applying the previous steps to all but one monitor does not lead to the crash. Version-Release number of selected component (if applicable): 5.15.4 How reproducible: always Steps to Reproduce: 1. Start a wayland plasma session 2. Unplug all the monitors 3. Plug back at least one monitor Actual results: kwin segfaults and you are greeted with a black screen. The system is also not in a recoverable state (can't access any tty to restart plasma or take any action) the only option is to forcefully reboot it. Expected results: kwin should not segfault Additional info: Mesa 19.0.3-1 Plasma 5.15.4 KF5 5.57.0-2 (but reproducible also with 5.55 which is the current stable) kernel 5.0.9-301 wayland 1.17.0-1 Graphic card: AMD Radeon RX 580 The attached systemd logs were reproduced with a single monitor which has then been unplugged leading to the segfault (note the part that says "requesting unexisting screen -1"): May 01 16:14:27 localhost.localdomain kernel: Code: 00 00 d0 ef 05 4e 7f 7f 00 00 80 eb 05 4e 7f 7f 00 00 40 eb 05 4e 7f 7f 00 00 00 00 00 00 00 00 00 00 51 00 00 00 00 00 00 00 <c0> 6b f1 90 58 55 00 00 00 00 00 00 00 00 00 00 00 12 4c 91 58 55 May 01 16:14:27 localhost.localdomain kernel: kwin_wayland[1884]: segfault at 555891595120 ip 0000555891595120 sp 00007ffc72288f98 error 15 May 01 16:14:27 localhost.localdomain audit[1884]: ANOM_ABEND auid=1000 uid=1000 gid=1000 ses=1 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 pid=1884 comm="kwin_wayland" exe="/usr/bin/kwin_wayland" sig=11 res=1 May 01 16:14:27 localhost.localdomain plasmashell[2063]: requesting unexisting screen -1 May 01 16:14:27 localhost.localdomain plasmashell[2063]: file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:146:19: QML Loader: Binding loop detected for property "height" May 01 16:14:27 localhost.localdomain plasmashell[2063]: file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:146:19: QML Loader: Binding loop detected for property "height" May 01 16:14:27 localhost.localdomain plasmashell[2063]: trying to show an empty dialog May 01 16:14:27 localhost.localdomain plasmashell[2063]: qt.qpa.wayland: Wayland does not support QWindow::requestActivate() Let me know if you need anything else. Thanks
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Fedora 30 changed to end-of-life (EOL) status on 2020-05-26. Fedora 30 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed.