Toggle for Nexus 7 (grouper) SmartDimmer/PRISM power-saving feature.

[devnullity]

echo '0' > /sys/devices/tegradc.0/smartdimmer/enable to disable; 1 for enable (default).

The feature "seamlessly" saves battery by decreasing backlight brightness while increasing contrast when a majority of the screen is displaying darker colors. This washes out the color on anything but a dark movie scene.

Disabling this feature is the primary function of any kernel app I use.

Thanks for the great app. :)

[devnullity]

The Tegra SmartDimmer dynamically drops the brightness while increasing contrast which saves battery. Sadly, it does not adapt quickly, so many prefer it disabled.

File location. /sys/devices/tegradc.0/smartdimmer/enable

Writing "1" or "0" to the file gets immediate results. "1" = enabled (default) "0" = disabled