Hi tom,
Not sure, I followed the description above, from a fresh buntu-gnome
14.04 install and it still works perfectly.
Do have the radon_bl0 brightness control folder? Check by typing in a
terminal: ls /sys/class/backlight/radeon_bl0
If so what happens if you type into the terminal: sudo bash
I just got a brand new Thinkpad E145 and had the same problem after a
new install of ubuntu-gnome 14.04 (BIOS 2.02).
After trying out all possible combinations of kernel parameters and
drivers I finally found a solution that worked for me.
I had to disable the fglrx drivers and use the X org xser
