![]() ![]() Then, uncheck the boxes that read ‘Change brightness automatically when lighting changes’ and ‘Help improve battery by optimizing the content shown and brightness.’ Step 3: Click on the arrow next to Brightness to expand it. ![]() Step 2: On the System tab, click on Display. Step 1: Click the Start menu icon and select on the gear-shaped icon to launch the Settings app. If it is, your laptop might not let you adjust brightness manually. Next, you can check if the auto-brightness is enabled on your PC. Step 2: Use the slider under Brightness to adjust the screen brightness. #Brightness keys windowsStep 1: Press Windows key + I to launch the Settings app. Press Windows key + A to launch the Action Center on Windows 11 and use the slider next to brightness to modify it.Īlternatively, you can modify brightness from the Settings app. If you can’t seem to adjust the screen brightness with the function keys on your keyboard, then you can turn to alternative means to achieve the same. Change Brightness from Action Center or Settings App Here are 7 handy troubleshooting tips that should help fix the brightness not working issue on Windows. #Brightness keys softwareUsing an USB-C to HDMI adapter should work fine, though.While your laptop may have a physical key to adjust brightness, it’d be futile to mash it if the software isn’t responsive. #Brightness keys macYou can enable reading the brightness from the display in the app's preferences, but do so at your own risk.Īdditionally, it seems the HDMI port on the 2018 Mac Mini does not work with the DDC/CI interface. Because of that, reading the initial brightness of the display is disabled by default, and when changing the brightness of a display for the first time, its initial brightness is set to 50%. There are some issues with certain Mac models which freeze when attempting to read the current brightness of the external display. Unfortunately, there is not much that can be done to remedy the situation. Most displays do, but there are some issues with Samsung displays (and possibly others), which do not implement the standard correctly. For the app to work, your display needs to support the DDC/CI standard properly. CompatibilityĮxternalDisplayBrightness uses the DDC/CI standard commands to control the brightness of external displays. This behavior is also customizable in the app's preferences. There is also an option to control the brightness of all connected displays simultaneously, by default triggered by using the keyboard shortcut in combination with the Command modifier. When pressing the keyboard shortcut in combination with Option + Shift, the brightness changes in smaller increments, just like on a real Mac. You can customize the keyboard shortcuts for the brightness actions to any of the F1 - F20 keys or the brightness keys on the Magic Keyboard (listed as MK_BDN and MK_BUP in the preferences).īy default the application takes over the default brightness keys on a Mac keyboard, which are mapped to F14 and F15, respectively. ![]() To completely quit the app, use the Quit button in the window. the app keeps listening for keyboard shortcuts when you close the preferences window. to access the preferences, simply launch the app again using Launchpad or any other method, and the preferences window will open. The app runs as a hidden agent app, silently listening for keyboard shortcuts. Grant the permission and relaunch the app for the change to take effect. Usageĭuring the first launch, the app will request permission to use accessibility services on your Mac to listen for keyboard shortcuts. #Brightness keys downloadTo install, download the latest release, open it and drag ExternalDisplayBrightness.app to your Applications folder. InstallationĮxternalDisplayBrightness supports macOS 10.13 High Sierra and newer. I wanted to make something simple which would Just Work™ and you could forget it's even there. There are a bunch of similar projects available, but they feel hard to use and are cluttered with too many options. This is a small summer project which I did to get some practice with developing Mac apps. GitHub repo DownloadĮxternalDisplayBrightness is a small utility which allows you to change the brightness of external displays connected to your Mac using keyboard shortcuts, just as you would change the brightness of the built-in display on a Macbook. ExternalDisplayBrightness | František Nesveda František Nesveda Projects About Contact ExternalDisplayBrightnessĪ Mac app to control the brightness of external displays using keyboard shortcuts. ![]()
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