It’s almost as if the signal for the monitor to turn on is not being sent. MacOS appears to recognize the monitor and resolution, as it is shown in display settings, and Apple Support was able to remove into my computer and see both screens. Secondary monitor (same model) connected via HDMI->DisplayPort adapter (BENFEI), then DisplayPort->USB-C cable no longer works after updating (worked fine on 11.1 before updating). Primary monitor LG Ultrafine 4k (Mac version) connected via Thunderbolt. Upgrading to 11.2 broke my second external monitor connection. This firsthand report from a MacBook owner is from Reddit:
#MACOS BIG SUR 11.2 3 UPDATE#
Apple support had no fix, so I guess I'll wait on 11.3 to fix the 11.2 update which was supposed to fix external monitor issues. I have lost my second monitor and can only use HDMI now.
Warning – Big Sur 11.2 update is breaking USB-C ports for many. And it doesn’t matter if the monitor is connected via an adapter or hub, either. This impacts both HDMI and DisplayPort displays. Apparently it can simply refuse to recognize an external monitor is connected to it. The first issue revolves around the USB-C port. According to the original report, there are two issues that appear to be most common, but it all stems from external display connections. Folks are taking to resources like Reddit, the Apple Support Community, and Twitter to voice their concerns. Apple meant to fix that with a recent software update, but it turns out the issues are still here.Īs noted today by MacRumors, there are some users out there running macOS Big Sur 11.2 –the newest version of the desktop OS– still having external display connection issues. Some MacBook owners have been experiencing issues with external displays.
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