*** This bug is a duplicate of bug 313231 ***
https://bugs.launchpad.net/bugs/313231
** This bug has been marked a duplicate of bug 313231
Backlight control doesn't work anymore on thinkpad
--
screen brightness controls don't work (regression)
https://bugs.launchpad.net/bugs/323405
You
Purely for what it is worth, I have a T61p and the brightness buttons
are working as expected.
$ dpkg -l | grep linux-image
ii linux-image-2.6.27-11-generic 2.6.27-11.27Linux kernel
image for version 2.6.27 on x86
ii linux-image-2.6.27-7-generic 2.6.27-7.16