[SOLVED] Screen dims after a few seconds

aHumanPerson · 2022-04-26 22:08:29

The screen noticeably dims a few seconds after boot.
I'm using KDE, and this is on a desktop. My monitor backlight setting isn't being changed. I have a Nvidia GPU and I'm using proprietary drivers.

journalctl -b

https://gist.github.com/smcbride-ca/103 … 26a5b02eb9

Xorg.0.log
https://gist.github.com/smcbride-ca/cd5 … 9ca6ff6cc9

Thank you in advance!

Last edited by aHumanPerson (2022-05-04 00:08:06)

dogknowsnx · 2022-04-27 07:59:24

Maybe start here

aHumanPerson · 2022-04-27 12:16:10

The monitor's backlight level can only be changed on the monitor itself. The issue isn't that I want to change the backlight, it's that my video output dims after a few seconds

seth · 2022-04-27 13:08:24

Is it the compositor?
SHIFT+Alt+F12 suspends it - does that make the screen brighter?

aHumanPerson · 2022-04-27 23:59:50

Yes, that does make it brighter. It also breaks a few things, which is to be expected.
Are there any log files or configs I should provide? Couldn't find a location for those

seth · 2022-04-28 05:53:36

I don't know what you're perceiving, but could be the colord integration or the dimming of inactive window or the nightcolor plugin - look around in systemsettings.

aHumanPerson · 2022-04-28 12:18:41

Couldn't find anything enabled there that might be related, and disabling colord didn't change anything.
Here's a video showing what happens:
https://drive.google.com/file/d/1VgrQDa … p=drivesdk
I had just enabled compositing again and once I move the mouse it dims. It's less noticeable on the video because of the exposure correction, but you see it.

Last edited by aHumanPerson (2022-04-28 12:20:37)

seth · 2022-04-28 14:43:49

It certainly looks like color correction, https://userbase.kde.org/Color_Manageme … ion_in_KDE but i don't use KDE, so idk whether the config GUI still looks the same.

aHumanPerson · 2022-04-28 21:53:26

I don't have that button, it must require some additional package.

aHumanPerson · 2022-05-01 01:25:55

I've installed "colord-kde" as the wiki says, and tried various colour profiles. No luck

seth · 2022-05-01 06:24:25

qdbus org.kde.KWin /KWin supportInformation

aHumanPerson · 2022-05-01 14:31:08

https://gist.github.com/smcbride-ca/1ef … 9ef45ee9f7

seth · 2022-05-01 14:44:52

Loaded Plugins:
---------------
…
kwin5_plugin_nightcolor

Currently Active Effects:
-------------------------
blur
contrast
…

I'd look there.

aHumanPerson · 2022-05-01 15:33:52

Disabling blur and contrast effects makes no difference, and night colour is already disabled.
From kwinrc:

[NightColor]
Active=false
NightTemperature=6500

aHumanPerson · 2022-05-03 23:57:45

I tried with other system themes, and it seems the issue happens on Breeze too, which is the default. It's just much more extreme, with it turning blue.
https://imgur.com/a/zn3GC1v
This is with breeze after moving the mouse

aHumanPerson · 2022-05-04 00:07:46

I can finally mark this as solved. Turns out the bright blue issue is fairly well known, and it can be easily fixed.
All I had to do was disable "Screen Edge" under desktop effects
https://www.reddit.com/r/ManjaroLinux/c … de_themes/

seth · 2022-05-04 05:48:09

I'd report that upstream - the thing is supposed to show little glowy things in the screen corner(s) to indicate their responsiveness.
MIght be relevant if this is some multiscreen setup.

Arch Linux

#1 2022-04-26 22:08:29

[SOLVED] Screen dims after a few seconds

#2 2022-04-27 07:59:24

Re: [SOLVED] Screen dims after a few seconds

#3 2022-04-27 12:16:10

Re: [SOLVED] Screen dims after a few seconds

#4 2022-04-27 13:08:24

Re: [SOLVED] Screen dims after a few seconds

#5 2022-04-27 23:59:50

Re: [SOLVED] Screen dims after a few seconds

#6 2022-04-28 05:53:36

Re: [SOLVED] Screen dims after a few seconds

#7 2022-04-28 12:18:41

Re: [SOLVED] Screen dims after a few seconds

#8 2022-04-28 14:43:49

Re: [SOLVED] Screen dims after a few seconds

#9 2022-04-28 21:53:26

Re: [SOLVED] Screen dims after a few seconds

#10 2022-05-01 01:25:55

Re: [SOLVED] Screen dims after a few seconds

#11 2022-05-01 06:24:25

Re: [SOLVED] Screen dims after a few seconds

#12 2022-05-01 14:31:08

Re: [SOLVED] Screen dims after a few seconds

#13 2022-05-01 14:44:52

Re: [SOLVED] Screen dims after a few seconds

#14 2022-05-01 15:33:52

Re: [SOLVED] Screen dims after a few seconds

#15 2022-05-03 23:57:45

Re: [SOLVED] Screen dims after a few seconds

#16 2022-05-04 00:07:46

Re: [SOLVED] Screen dims after a few seconds

#17 2022-05-04 05:48:09

Re: [SOLVED] Screen dims after a few seconds

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