• ×
    Information
    Need Windows 11 help?
    Check documents on compatibility, FAQs, upgrade information and available fixes.
    Windows 11 Support Center.
  • post a message
  • ×
    Information
    Need Windows 11 help?
    Check documents on compatibility, FAQs, upgrade information and available fixes.
    Windows 11 Support Center.
  • post a message
Guidelines
Stuck on a Black Screen? Quick Fixes for Your HP Desktop! Click here for the details.
Locked

‎10-29-2021 11:04 AM

HP Recommended
Product: iMac Retina 5k, 2019, 27"
Operating System: macOS 10.15 Catalina

I use an HP27f as an extended monitor for both my 5k iMac and my work HP laptop.

 

For the iMac I connect using an HDMI cable with a Thunderbolt-to-HDMI adapter, and set the refresh rate to 60Hz. This works well most of the time, but 1-in-3 times I wake up my Mac there are refresh rate syncing issues, and I need to reset the refresh rate in the Settings Displays control panel to get it to work properly. My iMac is running MacOS Big Sur 11.6, but had the same issue with previous revisions of MacOS.

 

Any suggestions on what this might be and how I can fix it?

 

Thanks in advance!!  😁

Warning
Be alert for scammers posting fake support phone numbers and/or email addresses on the community.
If you think you have received a fake HP Support message, please report it to us by clicking on "Flag Post".
† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the Terms of Use and Rules of Participation.
Didn't find what you were looking for? Ask the community
† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the <a href="https://www8.hp.com/us/en/terms-of-use.html" class="udrlinesmall">Terms of Use</a> and <a href="/t5/custom/page/page-id/hp.rulespage" class="udrlinesmall"> Rules of Participation</a>.