On Sun, Feb 28, 2010 at 2:15 PM, Frank Steinmetzger <war...@gmx.de> wrote: > Am Sonntag 28 Februar 2010 schrieb Xi Shen: >> hi, >> >> my system is gentoo amd64, kde 4.3. my laptop is thinkpad t61. after >> some configure in the kernel, and reboot with the new kernel, i can >> use the Fn+Home, and Fn+End to change the brightness of my lcd. but >> when i tried to change the lcd brightness by dragging the handle on >> the 'power management' tool, nothing happens. what else should i >> configure? > > It has never worked here, though I’m satisfied that I can use Fn+Crsr up/down, > which works on the HW level (even at boot). I don't know if you have an nvidia card. I had the same problem: I was only able to change the brightness from a text console. I solved the problem by installing nvclock (now I no longer need sunglases).
I hope that helps.