To answer Matt's question, yes, it is up to the nVidia driver to control the brightness control.
I've a T530 running Fedora and the backlit display works after resume. I'm using the nVidia proprietary driver and added the following line under the "Device" section in the Xorg conf file (/etc/X11/xorg.conf)
To answer Matt's question, yes, it is up to the nVidia driver to control the brightness control.
I've a T530 running Fedora and the backlit display works after resume. I'm using the nVidia proprietary driver and added the following line under the "Device" section in the Xorg conf file (/etc/X11/ xorg.conf)
Option "RegistryDwords" "EnableBrightne ssControl= 1"
Hope that helps!
-Andrew