[Bug 1973467] Re: [Wayland] Backlight stays on with black screen when monitor should be sleeping
*** This bug is a duplicate of bug 1971434 *** https://bugs.launchpad.net/bugs/1971434 ** This bug has been marked a duplicate of bug 1971434 Display powersave only blanks, but does not turn off -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1973467 Title: [Wayland] Backlight stays on with black screen when monitor should be sleeping To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1973467/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1973467] Re: [Wayland] Backlight stays on with black screen when monitor should be sleeping
** Changed in: mutter (Ubuntu) Importance: Undecided => Medium -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1973467 Title: [Wayland] Backlight stays on with black screen when monitor should be sleeping To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1973467/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1973467] Re: [Wayland] Backlight stays on with black screen when monitor should be sleeping
The problem persists with 23.04 and now with 23.10 as well from what I see. The only difference is that if I turn off the HDMI screen, the notebook screen can disable backlight over time. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1973467 Title: [Wayland] Backlight stays on with black screen when monitor should be sleeping To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1973467/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1973467] Re: [Wayland] Backlight stays on with black screen when monitor should be sleeping
Removing the nvidia-wayland tag because the bug clearly isn't specific to Wayland on Nvidia. Also the duplicate bugs don't have Nvidia at all. ** Tags removed: nvidia-wayland -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1973467 Title: [Wayland] Backlight stays on with black screen when monitor should be sleeping To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1973467/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1973467] Re: [Wayland] Backlight stays on with black screen when monitor should be sleeping
This also affects me, with a dual-monitor - laptop screen + one external monitor - setup (it's harder to tell if it also happens without the second monitor but I can check that if useful.) The second monitor is connected by either HDMI direct or HDMI via a thunderbolt dongle, and it happens in both cases. The only GPU in this laptop is i915, and it's running Ubuntu 22.04. It's maybe notable that in some but not all cases, I'll return and the mouse pointer is visible on the otherwise black screen. Also, it's not smooth. If I lock with super-L: * I get the lock screen * after a second, the lock screen fades to black, the laptop screen goes blank (maybe DPMS-off, it's hard to tell) and the external monitor reports "no signal" and turns itself off after a short moment * they remains off for a few seconds * they then wake up again and show the lock screen * after some time (20 seconds maybe) the external says "no signal" again and then powers off, laptop screen goes blank * it wakes up again, back at the lock screen * it settles on on with the lock screen showing, no change for a few minutes That's where I stopped, but I suspect that after some time the screen blanker turns the display blank but doesn't power things off. I can get a more precise sequence if it'd be useful. I ran these with both colour profiles and nightlight disabled, though they were previously enabled. My hypothesis is that the monitor turning off causes some event that causes Gnome to wake it up (in the past I've noticed windows moving from one screen to another, as if it were unplugged, but I haven't seen that recently), and then some other "let's not repeatedly power cycle things" check stops it happening too much. But that's 100% speculation. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1973467 Title: [Wayland] Backlight stays on with black screen when monitor should be sleeping To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1973467/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1973467] Re: [Wayland] Backlight stays on with black screen when monitor should be sleeping
Interesting thing is that I've reinstalled Kubuntu recently, then added Wayland. Plasma on Wayland seem to disable screens correctly. I've installed `ubuntu-desktop` and switch again to Gnome... and screens remain backlighted. This time I haven't added any extensions. Maybe some studies how Plasma deals with that would help solve this annoying issue? -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1973467 Title: [Wayland] Backlight stays on with black screen when monitor should be sleeping To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1973467/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1973467] Re: [Wayland] Backlight stays on with black screen when monitor should be sleeping
I wonder if this is caused by uncoordinated KMS updates not relating to displaying the primary plane. I imagine some of those will wake the monitor up even though there's no image to display. And even worse; some of them will come from gnome-settings-daemon beyond the control of gnome-shell/mutter (which is fixed in GNOME 43). To mitigate this, please try disabling features that might cause such updates: * Settings > Colour > turn OFF for all screens * Settings > Screen Display > Night Light = OFF * Software-controlled privacy screens on some models of laptop -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1973467 Title: [Wayland] Backlight stays on with black screen when monitor should be sleeping To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1973467/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
[Bug 1973467] Re: [Wayland] Backlight stays on with black screen when monitor should be sleeping
** Summary changed: - [Ubuntu 22.04] [nvidia] [Wayland] Screen Blank: External screen is not turned off in sleep mode + [Wayland] Backlight stays on with black screen when monitor should be sleeping -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1973467 Title: [Wayland] Backlight stays on with black screen when monitor should be sleeping To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1973467/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
