Display brightness adjustment not working
I have Thinkpad W510 and followed the instruction in this page. It solved the problem that you describe and Fn+Home/End are now toggling the brightness of the screen. I hope it will work for you too.
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Comments
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nibot over 1 year
I have Ubuntu 11.04 installed on a Lenovo Thinkpad T410 laptop with nVidia GT218 display controller. I am unable to adjust the display brightness. Pressing Fn-Home and Fn-End brings up the display brightness on-screen display and the indicated level increases or decreases as it should. But the actual display brightness does not change.
Earlier I was able to Ctrl-Alt-F1 over to a text terminal and then do Fn-Home / Fn-End to successfully change the display brightness, and then Ctrl-Alt-F8 back to the Gnome session with the new brightness. But after upgrading to 11.04 the psuedoterminals have disappeared.
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nibot almost 13 yearsUnfortunately, this didn't work.
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nibot almost 13 yearsAh, it did work! It needed a reboot and not just restarting the X server. In case that link goes away, the solution is to add a line saying
Option “RegistryDwords” “EnableBrightnessControl=1″
to theDevice
section of/etc/X11/xorg.conf
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Shervin Asgari over 10 yearsThis change in the xorg.conf made it work for me!