Lenovo T410 display dim

[neorej]

Hi All,

I've got a Lenovo T410 with a nvm3100 nvidia card. i am using the nvidia driver from the rpmfusion repo.
Everything works fine but when on battery power the display cannot be dimmed with the normal dim buttons.
The screen is allways at max power, and battery is quickly emtpy.

anyone knows a fix for this?

---------- Post added at 11:30 AM CDT ---------- Previous post was at 07:43 AM CDT ----------

Solved it!
Add the following line in /etc/X11/org.conf

Option  "RegistryDwords" "EnableBrightnessControl=1"

Add it in the "Device" section.

so mine looks like:

Section "Device"
    Identifier     "Videocard0"
    Driver         "nvidia"
    Option "RegistryDwords" "EnableBrightnessControl=1"
EndSection

[David Batson]

xvattr might do it for you. Do some searches on xvattr and brightness.

[eacosta]

Hi All,

I've got a Lenovo T410 with a nvm3100 nvidia card. i am using the nvidia driver from the rpmfusion repo.
Everything works fine but when on battery power the display cannot be dimmed with the normal dim buttons.
The screen is allways at max power, and battery is quickly emtpy.

anyone knows a fix for this?

---------- Post added at 11:30 AM CDT ---------- Previous post was at 07:43 AM CDT ----------

Solved it!
Add the following line in /etc/X11/org.conf

Option  "RegistryDwords" "EnableBrightnessControl=1"

Add it in the "Device" section.

so mine looks like:

Section "Device"
    Identifier     "Videocard0"
    Driver         "nvidia"
    Option "RegistryDwords" "EnableBrightnessControl=1"
EndSection

This solution also worked in my new Sony Vaio vpcf13yfx....thank u.