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How to adjust brightness on mac with keyboard

Select your startup disk, e.g., Macintosh HD.

Press and hold the power button until the startup options window appears.

Keep holding the Shift key until you see the login screen.

Restart your Mac and immediately press and hold the Shift key.

And wait for your Mac to power off completely. Note: You may go to the Apple menu > About This Mac to figure out if you have a Intel-based or Apple silicon Mac. Simply restarting your Mac in Safe Mode may help you fix your problem. Boot into Safe Mode, test your problem, leave Safe Mode and test your problem again. If resetting NVRAM does not work, you may want to reset the SMC to see if this resolves. Then try to adjust your brightness to see if it starts working. Then release the keys after the second startup sound or the Apple logo appears and disappears for the second time.

Keep holding these keys for about 20 seconds.

Turn on your Mac and immediately press and hold these four keys.

On your keyboard, locate these four keys: Option, Command, P, and R.

You can check this by going to the Apple menu > About This Mac. Note: You can reset NVRAM if your computer is an Intel-based Mac. NVRAM (nonvolatile random-access memory) stores your display settings. If the issue persists then we would recommend you to kindly reach out to Apple support as this may not be an issue related to the keyboard.Resetting NVRAM or PRAM can fix your problem. > You can also try a differnt keyboard on your computer if possible and check if the issue persists. NOTE: By default, the keyboard has direct access to Media Keys. We’ve added a notification to let you know you’ve swapped. Press Fn + Esc to swap between Media keys and F-Keys.

> Make sure the F1 and F2 buttons are not assigned a differnt task on Logitech Options software. Go to the Apple menu > System Preferences > Select Keyboard > Shortcuts > Display > Check the box to decrease and Increase brightness Go to the Apple menu > System Preferences > Select Keyboard > Click on Keyboard Tab > Check the box that describes "Use all F1,F2, etc.

Please follow below steps to check for same: > Make sure the shortcuts to change display brightness is enabled on your Mac. You can check for firmware on your Options software. > Make sure your keyboard's firmware is up to date. You can also install the latest software using the link below: We would recommend you to kindly update your Options software to the latest version. It is to inform you that an updated version of Logitech Options software (version 8.54.147) for macOS has been released.