macOS Sequoia and External Display Issues: What You Should Know
We want to make you aware of a known issue that some users are experiencing with the new macOS Sequoia operating system. When connecting an external display to a Mac, particularly on models with M-series/Apple Silicon processors, the display may not be detected or may fail to connect properly. External displays include both external desktop monitors and classroom projection systems.
This is a widespread problem that has been reported across various platforms and is often occurring after the macOS Sequoia update. While this can be a frustrating issue, there are effective solutions available to address it.
If you encounter this issue, please contact the appropriate support team for assistance.
- For RIT-owned devices: Please contact your designated College/Departmental IT support team.
- For personal devices: For official assistance and troubleshooting for personal computers, we recommend contacting Apple Support directly.
The following external resources provide detailed information and potential solutions that may be helpful for your IT support teams:
- How to Fix macOS Sequoia Not Detecting Second Display - MacReports
- How to fix your Mac not detecting second (external) monitor issue - Setapp
- Mac (Sequoia) Not Recognizing External Monitor - Dr.Buho
- Apple Support Communities
We appreciate your understanding and cooperation as we work to ensure a smooth technological experience in our learning environments.
For more information please refer to our Knowledge Base article on this topic.