Gigabyte M27Q KVM monitor stopped detecting Mac Mini after Monterey 12.3 (21E230) update. It shows "USB C No Signal" after several plug-in plug-out it it sometimes works. I've no peripheral connected to Mac Mini, it is connected with the monitor with Thunderbolt Type C cable only. Ay fix for this?
avadheshsharma,
Thank you for letting us know more.
Just to confirm, did you have a chance to go through the steps outlined in the article we previously provided? If your external display isn't detected or appears blurry on your Mac
Since the message you're receiving indicates an issue with the USB-C signal, this information from that article may help:
Check your cable or adapter
Disconnect the cable from your external display from your Mac, then reconnect it. If the cable from your external display doesn't connect to the ports on your Mac, you can use a Thunderbolt 3 or USB-C adapter.
For information about reverting your Mac to a previous macOS version, please check out this link: Revert your Mac to a previous macOS version
If you use Time Machine to back up your Mac, you can easily revert to a previous version of macOS if you experience trouble after installing an update. To select a Time Machine backup from an SMB server, your Mac must have macOS Sierra or later installed.
Important: Reverting erases any changes you made to the files on your Mac since you installed the new version of macOS. To save new or revised files, copy them onto a different disk or back them up before you follow these instructions.
Take care.
Hello avadheshsharma,
Have you been in touch with the manufacturer of the monitor to see if they offer any suggestions for this issue?
Thanks!
The Mac Mini is connected with a thunderbolt cable to the KVM monitor mentioned in the question. Sometimes it shows loader while booting up and disappears with the message "USB C No Signal", it started happening after the (21E230) Monterey update. It was working fine earlier, how to roll back to the previous version?
Yes, the link is not helpful. Are you trying to say the support for this monitor is not there anymore because of the Monterey update? How come it works after plug-in plug-out several times and switching USB-C port, that wasn't the case before this update.
Hi there avadheshsharma,
We'd like to help by providing the steps If your external display isn't detected or appears blurry on your Mac.
Cheers!
Gigabyte M27Q Display stopped detecting Mac Mini after Monterey 12.3 (21E230) update
