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External monitor shows part of the window only and black elsewhere

Sometimes when I connect my external monitor with my laptop with HDMI cable, I see the external screen becoming black. The top bar is still visible and if I swipe up the applications, I can see the applications. How do I debug this? I have attached the relevant images. If I restart the mac, it works perfectly. It is not possible to restart whenever this issue happens.

MacBook Pro 16″

Posted on Aug 12, 2023 10:18 AM

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Question marked as Top-ranking reply

Posted on Aug 12, 2023 11:43 AM

That appears to be the Multiple Spaces control bar. Multiple Spaces is something you can get used to, and you may love it. Described inmate detail in this article:


Work in multiple spaces on Mac - Apple Support


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1 reply

External monitor shows part of the window only and black elsewhere

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