---
slug: "mac-hdmi-display-freeze"
title: "My Mac Freezes When I Connect an HDMI Display"
description: "The cause is unknown, but sometimes when I connect a display to my Mac using an HDMI cable, it freezes."
url: "https://www.ytyng.com/en/blog/mac-hdmi-display-freeze"
publish_date: "2018-01-18T10:40:20Z"
created: "2018-01-18T10:40:20Z"
updated: "2026-02-26T23:43:04.548Z"
categories: ["mac"]
keywords: ""
featured_image_url: "https://media.ytyng.com/resize/20240629/4898a24aa9b247c3a665cffd162d0688.png.webp?width=768"
has_video: false
has_music: false
video_urls: []
music_urls: []
lang: "en"
---

# My Mac Freezes When I Connect an HDMI Display

<p>The cause is unknown, but sometimes when I connect a display to my Mac using an HDMI cable, it freezes.</p>
<p>In my case, it is reproducible. If I launch a browser (either Chrome or Firefox) and then connect the HDMI display, it freezes.</p>
<p></p>
<p>Environment</p>
<p>・macOS High Sierra</p>
<p>・"Displays have separate Spaces" option is OFF</p>
<p></p>
<p>There is no problem if I connect the HDMI cable without launching a browser.</p>
<p>It freezes when I launch a browser and then connect the HDMI cable.</p>
<p></p>
<p>I imagine that it might be trying to restore the browser window position and freezing because it can't.</p>
<p>The definitive solution is unknown.</p>