@jmairey Sorry, but I disagree.
Well, first of all, I have to agree with you on one thing: these
settings are confusing, yes. But I doubt you found the solution to the
problem.
REMINDER: When you do tests, don't forget to "undo" your workaround,
obviously!
1. Blank Screen delay can be adjusted from 2 places:
- Settings > Power settings
- Settings > Privacy & Security > Screen Lock
That's just redundancy for the SAME setting... Try changing it from one
place and you will find an echo in the other place... I agree this can
be confusing...
2. Check your own first screenshot, i.e. Power Saving:
"Screen Blank = Turn the screen off..." It is written right there!
TO REPRODUCE: (see screenshot)
1. Settings > Privacy & Security > Screen Lock:
- Blank Screen Delay: 1 minute
- Automatic Screen Lock: on
- Automatic Screen Lock Delay: Screen Turns Off
2. Wait > 1 minute
3. See? Screen is blank but not off. (Turn off the surrounding lights and look
closer...)
According to you, these steps to reproduce should solve my problem and
turn the screen off. But it doesn't work. Not here, at least. The screen
is blank, and locked, but not off.
And the shortcut for screen lock (🪟+L) gives the same results: locked,
blank, but not off.
Please correct me. Tell me exactly what I have to do to, step-by-step,
to make it work.
Otherwise, let's say it again and for the hundredth time: the only thing
that works is the OP's workaround #1: Configure the monitor (in its own
menus) to not auto-switch inputs. And that's not normal. It looks like
some sort of "feedback loop" between the monitor and the computer...
** Attachment added: "Settings > Privacy & Security > Screen Lock"
https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1971434/+attachment/5833627/+files/Settings-PrivacySecurity-2.png
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https://bugs.launchpad.net/bugs/1971434
Title:
Display powersave only blanks, but does not turn off
Status in Mutter:
New
Status in gnome-settings-daemon package in Ubuntu:
Triaged
Status in mutter package in Ubuntu:
Triaged
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/mutter/+bug/1971434/+subscriptions
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