Laptop backlight not working properly after system sleeps

[Bedna]

Brightness wonkiness on Steam Deck OLED

Curious, does ddcutil also not work correctly? I am on arch, and one of the latest KDE updates regressed back to wonky behavior of brightness/backlight. If you have ddcutil # check that your screen is detected: ddcutil detect # make sure Brightness is a detected capability: ddcutil capabilities | grep "Feature: 10" # You can compare the setting in ddcutil vs what the percentage is on your deck # Check the current brightness level: ddcutil getvcp 10 # Set brightness (in %, ie this example i…