this post was submitted on 02 Apr 2025
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[✅Fixed]Monitor drops to 30% brightness after suspend (feddit.org)
submitted 2 days ago* (last edited 2 days ago) by instantnudel@feddit.org to c/linux@lemmy.ml
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Hey, I hope someone can help me.

Problem:

When I wake my PC from suspend, my monitor is always set down to 30% brightness for some reason.

These are the brightness settings of the monitor itself, which can only be accessed via the monitor settings using the buttons on the monitor. I do not mean the brightness settings of my desktop environment. These are still set to 100%, even though the monitor is darker.

The problem also arises in a second case. When I lower the brightness in the brightness control of my DE, my monitor brightness is also lowered in the monitor settings down to 30% again. I can then no longer increase the brightness in the DE settings, because 100% in the DE now equals 30% in the monitor. So if I set the brightness to 50% in the DE for example, this is 50% of the 30% set in the monitor. So actually only 15% in real terms

I hope I was able to explain the problem clearly. Please ask if you don't understand something. It's really annoying because I need to turn up my screen brightness with the Buttons on the Monitor every single time I wake up my PC.

Technical data:

  • Nobara Linux 41 (Based on Fedora)
  • KDE Plasma 6.3.3
  • Wayland
  • Desktop PC. So a external monitor. Not a laptop monitor.
  • I have a 2nd monitor on which this does not happen.
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[–] fossphi@lemm.ee 8 points 2 days ago (1 children)

I think this is somewhat of a known issue with Plasma 6. Happens intermittently to me as well. But seemingly the latest versions should have it fixed

[–] instantnudel@feddit.org 6 points 2 days ago (1 children)

latest versions should have it fixed

Well fuck me, I guess xD I had this problem since probably 3 weeks and tried so much shit and yes I also updated many times. BUT NOW when I finally make a post about it, the newest update I just made fixed it. So yea. All working fine again. ✅

[–] fossphi@lemm.ee 3 points 2 days ago

Haha, nice! Happy to hear that! But sometimes it do be like that