The fix is non-trivial and conflated by being just one commit in a merge of unrelated changes:
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/4209/diffs?commit_id=313860e2fab15249337f70d0c298dd02b903c7b9 But if we gain more confidence that this fix in Mutter 48 is the only fix most people need, then it could be backported to Mutter 46 for Ubuntu 24.04. ** Changed in: gnome-settings-daemon (Ubuntu) Status: Fix Released => Invalid ** Tags added: desktop-needs-sru ** Tags added: fixed-in-mutter-48.0 fixed-upstream -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1971434 Title: Display powersave only blanks, but does not turn off Status in GNOME Settings Daemon: New Status in Mutter: New Status in gnome-settings-daemon package in Ubuntu: Invalid Status in mutter package in Ubuntu: Fix Released Bug description: [ Impact ] On some machines when the screen blanks, the LCD backlight stays on. [ Workarounds (reported to work by some people) ] * Configure the monitor (in its own menus) to not auto-switch inputs. * Change from HDMI to DisplayPort cables. * Disable HDMI audio output. [ Test Plan ] 0. Make sure you're using an LCD (not OLED) so you can see if the backlight is on. 1. In Settings -> Power -> Screen Blank, set the inactivity period to 1 minute. 2. Verify after 1 minute that the screen is blank and the backlight is also visibly off. [ Where problems could occur ] [ Other Info ] To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-settings-daemon/+bug/1971434/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp