On my laptop Acer (model 4750) I have to pass kernel parameter acpi=off to be able to setup screen brightness via the Fn key. However the screen resolution is then downgrade (to 1024/640 from 1366/768). Why ?
Acer (like many manufacturers) have there own ideas about ACPI standards.
Which solution should I try ?Try Testing - or look for backported acpi packages.Note: I'm using latest Squeeze 6.0.2.1. I tried same thing with Ubuntu 11.04 : it works perfectly as FN keys works without any loss of screen resolution.
Hence the testing/backports suggestion.
Fine for using the backports. But then which packages should I backport ? Bye, Bruno