MSI Monitor Not Displaying MacBook (Works Elsewhere, Black Screen at Home)

[natgreenonlin158e02de]

Subject: MSI Monitor Not Displaying MacBook (Works Elsewhere, Black Screen at Home)

Hi everyone,

I’m running into a really confusing issue with an MSI monitor and hoping someone here has seen something similar.

Setup:

• MSI monitor (recent purchase, still under warranty)
• MacBook Pro (Apple silicon, latest macOS)
• Connecting via USB-C → HDMI cable
• Monitor only has HDMI input (no USB-C)

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The issue​

The monitor powers on and detects an HDMI signal, but the screen stays completely black.

What’s strange is that everything does work under certain conditions:

• The monitor works perfectly when connected to other computers (tested at the store with both Windows and Mac)
• My MacBook works perfectly with a TV (no issues)
• My phone connects to the monitor via USB-C and displays fine
• I even had it working once at home briefly

But now, at home:

• The monitor detects HDMI input
• Occasionally flickers when changing resolution
• But never actually displays an image

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What I’ve already tried​

• Multiple HDMI cables (including ones provided/tested at the store)
• Different USB-C ports on my MacBook
• Different wall outlets (multiple rooms)
• Full power cycles (monitor + Mac)
• Changing resolutions and refresh rates in macOS
• “Show all resolutions” and testing lower resolutions (e.g. 1080p, 720p)
• Restarting macOS display system
• Clamshell mode (closing laptop to force external display)
• Disconnecting/reconnecting in different sequences

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Key observations​

• Monitor clearly receives a signal (does not say “No Signal”)
• Screen stays black despite signal detection
• Same exact setup works in-store but not at home
• Phone → monitor works reliably
• Mac → TV works reliably

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Question​

Has anyone experienced a similar issue where:

• A MacBook works with a monitor in one environment but not another?
• The monitor detects signal but shows a black screen?

Could this be:

• A compatibility issue between macOS and this monitor model?
• Something related to signal format (RGB vs YCbCr, etc.)?
• A firmware issue on the monitor?

Any ideas or things I haven’t tried would be really appreciated.

Thanks in advance

 

[FlyingMog]

Hi, What MSI monitor are you using? Do not sure whether the issue is caused by your USB-C to HDMI adapter cable. Please try using the Apple USB-C Digital AV Multiport Adapter (https://support.apple.com/en-euro/119850) for testing.