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Level 1

4 points

MBP M1 13" HDMI to TV stopping work (no signal output)

Hi everyone,

my MacBook has no HDMI signal to TV suddenly, I have done many test but still not works.

Device I use

Laptop: MBP M1 13" (Monterey 12.1 macOS)

HUB: CASA Hub A01m USB 3.1 Type-C

TV: PHILIPS TV 43PUH6002/96

And I also test with

The HDMI cable is works well with Nintendo Switch output to TV.
The HUB works well with iPad mini output to TV wiring by HDMI cable.
Plug-in to different HDMI port on the TV.
The TV can be detect on MBP.
Restart MBP.
Try to remove preference file "com.apple.windowserver.displays.plist" and restart.
Try to use different resolution on MBP.

Any idea? thanks!

MacBook Pro 13″, macOS 12.1

Posted on Jan 15, 2022 6:20 AM

Best reply

Level 10

127,567 points

Posted on Jan 15, 2022 7:16 AM

That's a 4K TV with three HDMI ports.

If you reduce the resolution dramatically, such as to 720p, do you get a picture then?

Your Hub appear to be capable of 4K at 30Hz.

what are your HDMI cables rated for?

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