MacBook Air 2015 Watching youtube full screen with safari will flash
Use some websites to watch videos, use full screen will flash black, use chrome will not, is there anyone like this?
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chris_g1
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Community Specialist
Hello 明章,
Thank you for using Apple Support Communities. It's my understanding that Safari flashes a black screen when watching YouTube videos in full screen on your MacBook Air. You've come to the right place! I'm happy to help.
I recommend testing the issue in safe mode. Starting in safe mode allows your Mac to run certain checks, remove caches, and prevent login items from automatically launching. This can isolate possible third party issues. Use the steps and information in the link below for assistance with safe mode:
Use safe mode to isolate issues with your Mac
If the issue persists, test in another user account. This will help determine if the issue is user specific or system wide.
How to test an issue in another user account on your Mac
Let us know the results. Please include specific error messages and any other troubleshooting steps you may have tried.
Have a nice day!