SUMMARY It's likely anyone doing a manual screenlock don't need to see anything on it in the next couple of seconds/minutes, so instead of waiting the timer that turns it off because of idling, locking the screen could just turn off display and keyboard backlight instantly, until a key is pressed. (A bonus could even be to have a way of turning them off from the lockscreen if they were accidentally awaken). SOFTWARE/OS VERSIONS ArchLinux Linux/KDE Plasma: 5.27.0 (available in About System) I'm not seeing an "About System", where should it be looked for? KDE Plasma Version: KDE Frameworks Version: Qt Version:
The lock screen can also function as a screen saver and that would be impaired if we did this. It would be quite weird if you lock your laptop's screen and then it immediately becomes almost illegible but still interactive due to the backlight turning off. If the goal is to save energy, just put the whole system to sleep. No can do, sorry.
You might want to turn the screen off and locked while not putting the system to sleep, for example if you play music/radio on it. For a personal situation, I do so when going to sleep and had such behavior with other lockscreens, I found this pretty handy, and I never saw a situation where I manually lock my screen and… want to watch it after…? Why would one lock its screen to watch a password input after that?
(In reply to Porkepix from comment #2) > You might want to turn the screen off and locked while not putting the > system to sleep, for example if you play music/radio on it. For this use case, you can lock the screen and hit the Esc key to turn off the display completely. > Why would one lock its screen to watch a password input after that? When using the lock screen as an old-school screensaver (e.g. with an animated background) that you like to be able to see. This turns out to be a surprisingly common thing for people to want to do, believe it or not.
(In reply to Nate Graham from comment #3) > (In reply to Porkepix from comment #2) > > You might want to turn the screen off and locked while not putting the > > system to sleep, for example if you play music/radio on it. > For this use case, you can lock the screen and hit the Esc key to turn off > the display completely. So, I just learned it's supposed to do that, but for me it isn't: pressing esc just hide everything else than wallpapers and date/time, but it doesn't turn off the screen, nor does it for the keyboard backlight. > > Why would one lock its screen to watch a password input after that? > When using the lock screen as an old-school screensaver (e.g. with an > animated background) that you like to be able to see. This turns out to be a > surprisingly common thing for people to want to do, believe it or not. So, I didn't knew it could be animated, and I'm sorry if it sounded mean or unfriendly toward people, I didn't mean for that.
Weird, it's supposed to work as of Plasma 5.27. It works for me. Can you upgrade to 5.27.1 and see if that's still broken? If so, please file a new bug report for it. Also, turning off the keyboard backlight when hitting the Esc key to turn the screen off seems reasonable. Can you file a new bug report/feature request for that too?
Still seeing the same thing on 5.27.1, so I filed https://bugs.kde.org/show_bug.cgi?id=466344 and https://bugs.kde.org/show_bug.cgi?id=466345 Also, if the escape key is a toggle on/off for the display, maybe then it could start turned off but then bu turned back on by using the key? Anyway, let's see what happens with those two bugs first.
Thanks!