Created attachment 154058 [details] Wayland core dump SUMMARY I have 2 AsusTek display port monitors connected to a Radeon 6600XT graphics adapter via DisplayPort. Everything is fine, unless I leave the machine until the lock screen displays and the monitors power off. When I come back and move the mouse, kwin_wayland crashes and all closed apps dissapear. After this the session is pretty much unsable and is just a blank black screen. STEPS TO REPRODUCE 1. Connect 2 display port monitors to a Radeon graphics adapter 2. Leave the machine until the monitors power off after the lock screen is displayed 3. Move the mouse, kwin_wayland core dumps OBSERVED RESULT kwin_wayland core dumps on monitor wakeup EXPECTED RESULT No core dumping and safe wakeup. SOFTWARE/OS VERSIONS Linux/KDE Plasma: ArchLinux $ pacman -Q | grep -e plasma -e kde kde-cli-tools 5.26.3-1 kde-gtk-config 5.26.3-1 kde-system-meta 22.08-2 kdeclarative 5.100.0-1 kdecoration 5.26.3-1 kded 5.100.0-1 kdegraphics-mobipocket 22.08.3-1 kdegraphics-thumbnailers 22.08.3-1 kdelibs4support 5.100.0-1 kdenetwork-filesharing 22.08.3-1 kdeplasma-addons 5.26.3-1 kdesu 5.100.0-1 libblockdev 2.28-1 plasma-browser-integration 5.26.3-1 plasma-desktop 5.26.3-1 plasma-disks 5.26.3-1 plasma-firewall 5.26.3-1 plasma-framework 5.100.1-1 plasma-integration 5.26.3-1 plasma-meta 5.25-1 plasma-nm 5.26.3-1 plasma-pa 5.26.3-1 plasma-sdk 5.26.3-1 plasma-systemmonitor 5.26.3-1 plasma-thunderbolt 5.26.3-1 plasma-vault 5.26.3-1 plasma-wayland-session 5.26.3-1 plasma-workspace 5.26.3-1 plasma-workspace-wallpapers 5.26.3-1 polkit-kde-agent 5.26.3-1 qt5-base 5.15.7+kde+r176-1 qt5-declarative 5.15.7+kde+r23-1 qt5-location 5.15.7+kde+r3-1 qt5-multimedia 5.15.7+kde+r1-1 qt5-quickcontrols2 5.15.7+kde+r6-1 qt5-speech 5.15.7+kde+r1-1 qt5-svg 5.15.7+kde+r9-1 qt5-tools 5.15.7+kde+r1-2 qt5-wayland 5.15.7+kde+r55-1 qt5-webchannel 5.15.7+kde+r3-1 xdg-desktop-portal-kde 5.26.3-1 ADDITIONAL INFORMATION Attached some logs.
Created attachment 154059 [details] eglinfo
Created attachment 154060 [details] kscreen outputs
Created attachment 154061 [details] randr output
I've tested this from a clean installation just to make sure nothing I had done caused it.
Pasting backtrace inline for searchability: Nov 26 21:10:53 nkukard-desktop2.lan systemd-coredump[30026]: Process 1750 (kwin_wayland) of user 11000 dumped core. Stack trace of thread 1750: #0 0x00007f45e67b5ebb _ZNK4KWin6Output9vrrPolicyEv (libkwin.so.5 + 0x1b5ebb) #1 0x00007f45e67b68a0 _ZNK4KWin19OutputConfiguration14constChangeSetEPNS_6OutputE (libkwin.so.5 + 0x1b68a0) #2 0x00007f45e67b697d _ZN4KWin19OutputConfiguration9changeSetEPNS_6OutputE (libkwin.so.5 + 0x1b697d) #3 0x00007f45e69b07ad n/a (libkwin.so.5 + 0x3b07ad) #4 0x00007f45e25094f6 n/a (libffi.so.8 + 0x74f6) #5 0x00007f45e2505f5e n/a (libffi.so.8 + 0x3f5e) #6 0x00007f45e2508b73 ffi_call (libffi.so.8 + 0x6b73) #7 0x00007f45e3900ada n/a (libwayland-server.so.0 + 0x8ada) #8 0x00007f45e3905010 n/a (libwayland-server.so.0 + 0xd010) #9 0x00007f45e39039e2 wl_event_loop_dispatch (libwayland-server.so.0 + 0xb9e2) #10 0x00007f45e6996e4a _ZN14KWaylandServer7Display14dispatchEventsEv (libkwin.so.5 + 0x396e4a) #11 0x00007f45e4ebda51 n/a (libQt5Core.so.5 + 0x2bda51) #12 0x00007f45e4ebf904 _ZN15QSocketNotifier9activatedE17QSocketDescriptorNS_4TypeENS_14QPrivateSignalE (libQt5Core.so.5 + 0x2bf904) #13 0x00007f45e4ebfa48 _ZN15QSocketNotifier5eventEP6QEvent (libQt5Core.so.5 + 0x2bfa48) #14 0x00007f45e4578b1c _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt5Widgets.so.5 + 0x178b1c) #15 0x00007f45e4e8cf98 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5 + 0x28cf98) #16 0x00007f45e4ed690c _ZN27QEventDispatcherUNIXPrivate23activateSocketNotifiersEv (libQt5Core.so.5 + 0x2d690c) #17 0x00007f45e4ed7a01 _ZN20QEventDispatcherUNIX13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5 + 0x2d7a01) #18 0x0000559e7240e952 n/a (kwin_wayland + 0x12c952) #19 0x00007f45e4e8573c _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5 + 0x28573c) #20 0x00007f45e4e90269 _ZN16QCoreApplication4execEv (libQt5Core.so.5 + 0x290269) #21 0x0000559e7232f611 n/a (kwin_wayland + 0x4d611) #22 0x00007f45e3e3c290 n/a (libc.so.6 + 0x23290) #23 0x00007f45e3e3c34a __libc_start_main (libc.so.6 + 0x2334a) #24 0x0000559e72330c95 n/a (kwin_wayland + 0x4ec95)
I fixed a bunch of similar issues with https://invent.kde.org/plasma/kwin/-/commit/20b94c90251719729d1ac42edae92ecc4da0e098, so I assume this is fixed. If it's still happening for you, please reopen this