- May 3, 2012
- Intel DH67BL
- HD 3000
- Mobile Phone
Read brightness guide, post #1, "Problem Reporting".
My touchpad toggle enable/disable button(F6) also stopped working(Synaptics). Previously it was fine and I was able to toggle it, but now it stopped working. This bug is also happening in Linux Ubuntu.
In Linux, I could get my backlight to work with acpi_backlight=vendor.
Did you do a BIOS update or BIOS changes lately?
Also, voodooHDA does not work at all for El Capitan. AppleALC too.
I don't use VoodooHDA. There is advice on using AppleHDA in the FAQ.