Kernel 6.8.6-2.g114e4b9-vanilla unable to set brightness on MCP79 (nvidia 9400) MacBook 5.1
I spotted this issue like months ago, however some RL issues prevented me from posting a proper bug report. The Macbook 5.1 brightness buttons doesn't work.
brightnessctl output: Device 'input10::capslock' of class 'leds': Current brightness: 1 (100%) Max brightness: 1
I am attaching dmesg, current video rom, hwinfo output and related package versions.
This is a rolling release OS so I could only go back to 6.7.x kernel series however I can go back to 6.6.x or earlier manually. I believe it happened months ago though.
Edited by Ilgaz Öcal