This means that if your Mac is older than 2012 it won't officially be able to run Catalina or Mojave. In the case of Catalina that includes all the old-style Mac Pro models, pre-'trash can'.

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Change your display's refresh rate

The 16-inch MacBook Pro has a Retina display with an adjustable refresh rate.

1. Press the Power (Eject) key to boot your MacBook Pro On MacBook Pro with Removable Battery 1. Unplug your MacBook Pro from the power supply 2. Remove its battery 3. Press and hold down the Power button for 5 seconds 4. Release the Power button 5. Place the battery back in 6. Re-connect to the power supply 7. Press the Power button to boot.
2. Question: Q: 10.13.3 MacBook Pro won´t update! When trying to update from OS high Sierra 10.3.2 to the latest 10.3.3 my Macbook pro mid 2012 won´t do it. First it says ”some updates need to finish dowloading before they are installed.
3. One user has reported an issue opening the Screenwriter 6.5 installer.DMG (disk image) after they upgraded to macOS 10.13 High Sierra. The symptom is that after double-clicking the.dmg, the FInd.

Use the Touch Bar

The Touch Bar shows you intuitive shortcuts and app controls when you need them.

Use Touch ID on MacBook Pro

With Touch ID on your MacBook Pro, you can quickly unlock your Mac and make purchases using your Apple ID and Apple Pay — all with your fingerprint.

Find adapters for Thunderbolt 3 (USB‑C) ports

If the cable from your external display, hard drive, camera, or other device doesn't connect to your Mac, you might need an adapter.

Use the Force Touch trackpad

Learn about the Force Touch trackpad, its features, and how to use it.

Check your startup security

Use Startup Security Utility to make sure that your Mac always starts up from your designated startup disk, and always from a legitimate, trusted operating system.

Use True Tone

True Tone makes the images on your Retina display appear more natural.

Get AppleCare+ for Mac

With AppleCare+, you’re covered. Get accidental damage coverage and 24/7 priority access to Apple experts.

Resources

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Many MacBook Pro users have had a camera issue occurring on their notebook. The built-in camera on their MacBook Pro is not working properly. The camera is not functioning (even though the green indicator light may be on) when they’re using programs such as FaceTime or Skype. And the program tells them there’s no connected camera.

This is a frustrating issue. You can’t use apps requiring your camera because of this issue. But don’t worry. It can be fixed…

Fixes to try

These are the methods that have helped many MacBook Pro users fix their camera. You don’t have to try them all; just work your way down the list until you find the one that works for you.

Method 1: Restart your MacBook Pro

There may be temporary corruption issues on your MacBook Pro so you can’t use the built-in camera. These issues can be fixed by a restart of your notebook. Try restarting your MacBook Pro and see if this fixes your camera. If it does, you’ve solved your problem. But if not, there are still some fixes for you to try…

Method 2: End all the processes that are using the camera

There may be some processes that are using your MacBook Pro camera and won’t allow you to use it on other programs. You should close all the processes that are using the camera to see if this fixes the issue for you. To do so:

1) Click Launchpad.

2) Click Other.

3) Click Terminal.

4) Type “sudo killall vdcassistant” and press Enter on your keyboard.

5) Type your password (the password you use to log in to your MacBook Pro) and press Enter.

6) Wait until the system closes all the processes. Then check to see if you are able to use your camera.

Hopefully it does. But if not, there are three more fixes for you to try.

Method 3: Reset the SMC on your MacBook Pro

The SMC (System Management Controller) is handling some hardware functions, including those related to your camera, on Intel-based Mac computers. You will fix your camera by resetting the SMC if it is this component that causes your trouble. To reset the SMC:

1) Shut down your MacBook Pro.

2) Press the leftShift, Control, Option keys on your keyboard and the power button and then hold them for 10 seconds. After that release those keys.

You’ve reset the SMC on your MacBook Pro. Turn on your MacBook Pro and check to see if this resolves your problem. If it does, great! But if it doesn’t, you may need to…

Method 4: Have your MacBook Pro serviced

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If none of the methods above fixes your camera issue, contact an Apple authorized service provider or an Apple retail store and have your MacBook Pro serviced. Please note that you may lose your data on your notebook when you are having it serviced. So make sure you back up your personal data before doing so.