I have a second monitor thats usually set to 60 Hertz but after the latest update it keeps defaulting to 30 Hertz. Also, It doesn't even give me the option to change the refresh rate anymore unless I restart the computer. This started happening after the latest OS update. Please help.
MacBook Pro 16″, macOS 12.1
Thanks for getting back to us about your display refresh rate, Jimmy,
Since the refresh rate settings were working as expected in safe mode, that could indicate there are login items interfering with the refresh rate. If you have not already, follow the steps below from How to use safe mode on your Mac on what to do:
"If the issue doesn't continue in safe mode
If the issue doesn't continue while in safe mode, leave safe mode by restarting your Mac normally. Then test for the issue again. The issue might be resolved.
If the issue returns after leaving safe mode, startup items are probably at fault. Apps can install such items in numerous places, and they aren't always easy to find or recognize. For that reason, you should first make sure that you've installed any available updates for your Apple software and third-party apps.
If updating your software doesn't help, try any of these solutions:
If you have followed those steps and still are experiencing an issue with the refresh rate settings, please get in touch with Apple Support directly: Get Support.
Enjoy your weekend!
Thanks for getting back to us about your display refresh rate, Jimmy,
Since the refresh rate settings were working as expected in safe mode, that could indicate there are login items interfering with the refresh rate. If you have not already, follow the steps below from How to use safe mode on your Mac on what to do:
"If the issue doesn't continue in safe mode
If the issue doesn't continue while in safe mode, leave safe mode by restarting your Mac normally. Then test for the issue again. The issue might be resolved.
If the issue returns after leaving safe mode, startup items are probably at fault. Apps can install such items in numerous places, and they aren't always easy to find or recognize. For that reason, you should first make sure that you've installed any available updates for your Apple software and third-party apps.
If updating your software doesn't help, try any of these solutions:
If you have followed those steps and still are experiencing an issue with the refresh rate settings, please get in touch with Apple Support directly: Get Support.
Enjoy your weekend!
Hi there, Jimmy,
Thanks for visiting the Apple Support Communities. If we understand, the refresh rate for your external display keeps reverting from 60 Hertz to 30 Hertz on its own. We are happy to help!
Based on everything you've told us, we'd suggest seeing if the issue can be duplicated while in safe mode: How to use safe mode on your Mac, and a new user account: Set up users, guests, and groups on Mac - Apple Support
Don't hesitate to respond back if you still need help. If you do, please let us know what display you are using with your MacBook Pro.
Cheers!
Thanks for your reply. The problem did not occur when I restarted in Safe Mode. However, in regular mode after waking up from sleep it still reverts back to 30 Hertz. It doesn't even show the option to switch back to 60 Hertz. The option somehow disappears until I restart it again.
The display im using is the 24inch LG Ultrafine I purchased from the Apple Website.
Thanks!
Adjusting Refresh rate on second monitor
