macOS Big Sur - How do I disable keyboard backlight permanently? I don't need the keyboard backlighting on MacBooks, and yet every time I turned it off, it's automatically turned on again after waking up from sleep / reboots.
How do I turn off backlighting permanently on MacBooks running macOS Big Sur?
Edit: Add my current settings in Sys Prefs:


Yes, Adjust keyboard brightness in low light is unchecked.
Backlighting is always automatically turned on after the Mac wakes up from a sleep of more than 6 hours, the keyboard brightness won't change as long as I keep using the Mac / the Mac is not put to a sleep for more than a few hours.
This bug exists in Catalina too, before I upgraded to Big Sur.
You need to uncheck the &quot;Adjust keyboard brightness in low light&quot; setting in the &quot;Keyboard&quot; pane of System Preferences. Then, adjust the backlight to zero by pressing F5 (or tapping the setting on the Touch Bar).

(image from https://support.apple.com/en-us/HT202310)