monitor-brightness

An AutoHotkey script that enables shortkeys to change the brightness of external Dell monitors.

This script was created because my monitor - a Dell Ultrasharp U2515H - has touch buttons which can be difficult to find in low light and require your hands to leave the keyboard.

• This script requires AutoHotkey to run;
• and Dell Display Manager

to function.

It is recommended to enable this script at startup when using an external monitor.

Setup

Enable script at startup

Place a shortcut to the script file in the Windows startup folder.

For all users:
%AllUsersProfile%\Microsoft\Windows\Start Menu\Programs\StartUp

For a single user:
%AppData%\Microsoft\Windows\Start Menu\Programs\Startup

Shortkeys

• ctrl + alt + up arrow
  Increase monitor brightness by 5.

  Changed from 10 to allow more subtle changes.

• ctrl + alt + down arrow
  Decrease monitor brightness by 5.

  Changed from 10 to allow more subtle changes.

• ctrl + alt + [number]
  Set monitor brightness to number × 10.

• ctrl + alt + l
  Set display orientation to landscape (0°).

• ctrl + alt + p
  Set display orientation to portrait (90°).

• ctrl + alt + u
  Set display orientation to inverted landscape (180°).

• ctrl + alt + i
  Set display orientation to inverted portrait (270°).

Known bug

When the monitor brightness is 0, it cannot be incremented. However, it can be set.
This is a bug in the Dell Display Manager software.

This has been fixed!