Turning off power to display while logged onto EOS

General system Kernel, boot, graphics & hardware
1

Is there a way to have EOS re engage with a display, (in my case it’s a oled 4k tv), if it’s been turned off and turned back on say two hours later?

2

Following.

I had this happen to me a little bit ago. My main display (a 4K OLED TV) powered off. When I sat back down and turned the display back on, EOS wouldn’t display to it (even though it “was there”), until I went on my other normal monitor and disabled/re-enabled the TV display.

3

I’m not sure I understand.

While not OLED, I’m using a 32" 4K Samsung smart TV / Monitor. If I leave for any length of time, and the PC goes to sleep, all I have to do is hit any key on the keyboard and the TV / Monitor turns on and I see the login screen. If I actually turn the TV / Monitor off manually and come back later and turn the TV / Monitor back on, I hit any key on the keyboard and the login screen is there. Should be normal behavior.

4

That’s definitely the expected behavior. And preferred if I’m honest lol. But it for sure jacks up my display like I described. Not sure if the OP is experiencing this same problem though and I don’t want to completely hijack the thread lol

5

I do this (on purpose) all the time, but it’s not a 4K OLED TV. Just a 1080p LED TV. I don’t have to do anything special. I disabled automatic screenlock, but I think the same applies when that’s on, too.

6 
kscreen-doctor --dpms off

Turns my laptop screen off, you could try something like:

#!/bin/bash
kscreen-doctor --dpms off 
sleep 20m
kscreen-doctor --dpms on

But any keyboard or mouse movement will override.

7

I have sleep disabled. When its enabled, and it goes to sleep the same thing happens. The display will not display.

8

Yea I’ve disabled sleep as well. Sounds like we are experiencing the same issue then.