taicheng_ wrote:
After updating to Sonoma 14.0 on my MacBook Air M2, the display brightness was behaving erratically in terms of display brightness. So I turned it off from the display settings. Now when I went back to display settings the option to turn on/off Automatic Brightness Adjustment is gone.
Have you shut down and restarted the computer more than once...
no insight—
A SafeBoot Use safe mode on your Mac - Apple Support will sort many anomalies. Log in and test, reboot as normal and test.
no resolve—
Call Customer Support (800) MY–APPLE (800–692–7753)
or on line https://getsupport.apple.com/
Outside the USA—Contact Apple for support and service by phone
See a list of Apple phone numbers around the world.
Contact Apple for support and service - Apple Support