https://bugs.kde.org/show_bug.cgi?id=505379
--- Comment #2 from SDon <[email protected]> --- Hi! I'm using virt-manager with KVM. I did a bit more testing, I can reproduce the issue with virtio GPU, when I have 3D acceleration and opengl turned on. If I turn these 2 off, virt manager tells me on a black screen, Display output is not active. I can also reproduce the issue with BOCHS video, on VGA video I can't reproduce it. On QXL plasma seems to die (when it should lock the screen I hear a notification sound, after that I move the mouse and I get a whole black screen. I can't even switch TTY after that). With my original setup (virtio with acceleration), I get the following log when I leave the VM alone for some time: jún 24 14:17:43 test-standardpc kwin_wayland_wrapper[2775]: file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/lockscreen/LockOsd.qml:10:1: "../osd": no such directory Maybe my installation is somehow in a bad state (I have updated the VM to 6.4 since the report). Later I'll try it with a fresh install. Also let me know what logs should I check. For the QXL video, I have the following, maybe related, maybe it's actually a bug with KVM or my host has some problems, but I'll leave it here, just in case: jún 24 12:52:12 test-standardpc kdeconnectd[1749]: 2025-06-24T12:52:12 kdeconnect.core: No local bluetooth adapter found jún 24 12:52:41 test-standardpc org.kde.KSplash[2563]: org.kde.plasma.waitforname: WaitForName: Service was not registered within timeout jún 24 12:52:41 test-standardpc dbus-daemon[1330]: [session uid=1000 pid=1330 pidfd=5] Activated service 'org.kde.KSplash' failed: Process org.kde.KSplash exited with status 1 jún 24 12:56:03 test-standardpc polkit-kde-authentication-agent-1[1642]: qt.qpa.wayland: There are no outputs - creating placeholder screen jún 24 12:56:03 test-standardpc kded6[1570]: qt.qpa.wayland: There are no outputs - creating placeholder screen jún 24 12:56:03 test-standardpc org.kde.elisa[1948]: qt.qpa.wayland: There are no outputs - creating placeholder screen jún 24 12:56:03 test-standardpc xdg-desktop-portal-kde[2208]: qt.qpa.wayland: There are no outputs - creating placeholder screen jún 24 12:56:03 test-standardpc plasmashell[1608]: kde.plasmashell: requesting unexisting screen available rect -1 jún 24 12:56:03 test-standardpc kdeconnectd[1749]: 2025-06-24T12:56:03 qt.qpa.wayland: There are no outputs - creating placeholder screen jún 24 12:56:03 test-standardpc plasmashell[1608]: kde.plasmashell: requesting unexisting screen available rect -1 jún 24 12:56:03 test-standardpc org_kde_powerdevil[1643]: qt.qpa.wayland: There are no outputs - creating placeholder screen jún 24 12:56:03 test-standardpc plasmashell[1608]: file:///usr/share/plasma/plasmoids/org.kde.plasma.kicker/contents/ui/SideBarSection.qml:18: TypeError: Cannot read property 'horizontalCenter' of null jún 24 12:56:03 test-standardpc plasmashell[1608]: file:///usr/share/plasma/plasmoids/org.kde.plasma.kicker/contents/ui/SideBarSection.qml:18: TypeError: Cannot read property 'horizontalCenter' of null (I have seen the org.kde.KSplash failed message with virtio as well somtimes) -- You are receiving this mail because: You are watching all bug changes.
