Idk if it is related but I found that my LCD monitor dims through the GNOME setting, but just not my OLED.
this post was submitted on 30 Mar 2025
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What laptop? BIOS option?
Star Labs Starbook 7, Coreboot.
You probably have a conflict between your power profiles and gnome settings.
Do you already have the power profile selector in your gnome panel in the top-right menu? Try switching to balanced or performance and see if it stops.
If that doesn't help, check this out.
It looks like you're right - just checked and it only seems to happen when Power Saver is selected in GNOME. Do you know if anything can be done to prevent dimming in this mode?
Check my second point and link.