I have MBP 9,1 2012 i7. Latest Sonoma beta, latest OCLP. All OK, including brightness keys.MBP 9,2 2012 i7.
The brightness keys do not work anymore under Sonoma.
They worked under Catalina, and they still work under Bootcamp windows.
MBP 9,2 i5 works fine.
Even when booting the exact same Sonoma from external HD, it works fine here, but the keys do not work under I7.
Any suggestions or explanations? Thank you.