Red Hat Bugzilla – Bug 746016
Lenovo Y450 Screen Brightness
Last modified: 2011-11-07 19:17:45 EST
Description of problem:
The shortcut key to change brightness of the the screen on Lenovo Y450 is recognised, however the screen brightness does not change. The shortcut key is Fn + Up Arrow/Down Arrow.
The same problem on Lenovo Ideapad S205.
Do you have problem described here?
When you switch off/on the backlight, the system crashes.
This is likely a duplicate of 748210 as Václav suggested. If a kernel with that fix comes out and you still have issues, please reopen.
*** This bug has been marked as a duplicate of bug 748210 ***
(In reply to comment #0)
> Description of problem:
> The shortcut key to change brightness of the the screen on Lenovo Y450 is
> recognised, however the screen brightness does not change. The shortcut key is
> Fn + Up Arrow/Down Arrow.
You may have installed the proprietary nVIDIA driver. You need to modify the xorg.conf.
First execute nvidia-xconfig as root, and then edit /etc/X11/xorg.conf, change the Device section like this:
VendorName "NVIDIA Corporation"
Option "RegistryDwords" "EnableBrightnessControl=1"
(Notice the "Option" line)
(This is NOT a bug)