SOLVED.
By removing any acpi options added to the kernel boot parameter lines in
GRUB.
update-grub
probably not needed but also did apt-get update / upgrade
downloaded the 13.10-beta2 amd / catalyst driver from amd.
first try at installing failed, it said something about missing packages
/ fil
tag: kernel-bug-exists-upstream
kernel-bug-exists-upstream
I have had time to install the upstream Kernel, as per jsalisbury
suggestion. It is exactly the same. The controls move the level up/down
but the actual screen brightness does not change.
I am new to this type of forum and don't know how
I to have this bug, I have tried several fixes published about ACPI
kernel settings, none seem to work.
Did anyone try the latest Kernel yet?
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