https://bugs.kde.org/show_bug.cgi?id=505379
--- Comment #6 from SDon <[email protected]> --- I have updated to version 6.5.1 (by adding the backports PPA). Problem still persists (as a reminder, this is in virt-manager (KVM) virtual machine, with virtui GPU, 3D acceleration enabled). But there is a bit more nuance I think: While updating the original system (which took quite a long time) I was checking on it, and sometimes it actually worked (screen went fully black), but it was kinda rare. Now with the newest version, it does the same, sometimes it works, most of the times it doesn't. The level of dimming seems different, sometimes nearly all the way, sometimes not that much. So I think it could be a timing issue. Under X11 session it works the same as in the Wayland session. Under an old (2022) version of Ubuntu with X11 Gnome, it works fine, even though the transition is slower. However, turning off the screen instantly from the command line with this command: xset -display :0.0 dpms force off The screen contents stay on the screen without updating. So turning off the screen must not work properly in virt-manager (or maybe this is how it's supposed to, I'm not sure). (This command does the same thing under X11 Plasma as well.) Under Plasma wayland I found this comamnd to turn off the screen: qdbus6 org.kde.kglobalaccel /component/org_kde_powerdevil invokeShortcut "Turn Off Screen" Alternatively, this does the same: kscreen-doctor --dpms off But this just triggers the same turning off dimming animation, it's not instant. It's easier to test with at least. Is there a setting that makes the dimming faster (or instant)? -- You are receiving this mail because: You are watching all bug changes.
