[arch-general] Nvidia backlight control - acpi_video0/brightness changes - display doesn't?

[Ralf Mardorf]

On Sun, 20 Nov 2016 03:08:12 -0600, David C. Rankin wrote:
>    if [ $UID -eq 0 ]; then
>        echo $(luminance) > "$dest"/brightness

Are you using the "helper script" because

  sudo echo $(luminance) > "$dest"/brightness

doesn't work? If so, then consider to use

  echo $(luminance) | sudo tee "$dest"/brightness

to get rid of the "helper script".

Regards,
Ralf