For one of my two new 24.04 machines, the connection is from hdmi out through a dvi adaptor to an older monitor. that machine has no problem with fully blanking the monitor. maybe it is some sort of hdmi audio handshake that results in waking up the new IPS monitors and ends with them having their backlights lit?
The only display port connections I have are USB-C, so I would need a usb-c to full size display port adapter or cable, which I do not have on hand. But I will try this: https://askubuntu.com/questions/1165209/disable-hdmi-audio-on-ubuntu-studio-19-04 because dvi has no audio, unlike hdmi. I use an outboard USB DAC and headphone amplifier on both my machines, not the HDMI audio. But I am not going to reboot this machine immediately to test it out. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-settings-daemon in Ubuntu. https://bugs.launchpad.net/bugs/1971434 Title: Display powersave only blanks, but does not turn off To manage notifications about this bug go to: https://bugs.launchpad.net/mutter/+bug/1971434/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
