If you’ve recently updated your Mac to macOS 15.2, you might have noticed something strange happening when you try to connect to an external display: the dreaded mirroring glitch. Your external monitor may be stuck showing the same image as your Mac screen, or it could be acting up in a way that leaves you scratching your head.
Don’t worry! You’re not alone. The update has caused a widespread issue with external displays, and users everywhere are reporting this frustrating bug. But before you dive into panic mode, let’s break down what’s going on, why it happens, and how you can fix it.
When you plug in an external monitor to your Mac after the macOS 15.2 update, you might notice that your display doesn’t work the way it should. Instead of extending your desktop, macOS 15.2 seems to mirror your laptop screen, showing the same content on both the Mac and the external monitor. This isn’t just annoying—it can be a total productivity killer, especially if you need to use the extra screen real estate.
But don’t fret—this isn’t an intentional feature. It’s a glitch that has been affecting a lot of users since the update, and thankfully, Apple is already working on a fix.
The issue seems to be related to how macOS 15.2 handles display connections. It looks like the update has caused a miscommunication between your Mac’s graphics card and the external display. Instead of recognizing that you want to extend your screen, macOS is mistakenly treating your external monitor as if it should mirror the laptop’s display.
This bug is especially prevalent for users with multiple monitor setups or those connecting through docking stations or adapters. But it’s not just about the hardware—the software glitch seems to be tied to the new features and optimizations in macOS 15.2, which may have inadvertently broken the connection between your Mac and the display.
While we wait for an official patch from Apple, here are a few workarounds you can try to fix the issue:
A: While many users are reporting this bug, not everyone is affected. It seems to be more common for those using multiple displays or connecting via adapters and docks.
A: Yes! Apple is aware of the issue, and it’s likely that a fix will come with the next minor macOS update. Stay tuned for announcements from Apple.
A: No! This is purely a software issue, and it won’t cause any lasting damage to your Mac or external display. It’s just an annoying inconvenience for now.
A: Yes, you can! The glitch doesn’t prevent you from using the display, but it does limit functionality by mirroring your screen rather than extending it. It’s more of a visual nuisance than a complete dealbreaker.
A: Downgrading is a drastic step and not recommended unless you absolutely need to fix the issue urgently. The simplest option is to wait for a software update from Apple that should address the bug.
In the world of tech, bugs happen—even with the most well-loved operating systems like macOS. If you’ve run into the macOS 15.2 external display mirroring glitch, just know you’re not alone. Try out the troubleshooting tips above, and don’t forget to keep an eye out for an official fix from Apple. Until then, hang in there—it’ll be sorted soon enough!
Got more questions? Drop them in the comments below, and we’ll help you out!