I can confirm this bug. Up to Kernel 2.6.27-10 backlight dimming of my Lenovo Thinkpad R500 was ok. After update to 2.6.27-11 it was broken. Starting with previous kernel in Grub the dimming was working.
I can confirm this bug. Up to Kernel 2.6.27-10 backlight dimming of my Lenovo Thinkpad R500 was ok. After update to 2.6.27-11 it was broken. Starting with previous kernel in Grub the dimming was working.