MacBook Pro recognizes the Projector but no display

On a projector I have used successfully in the past year:

Mack book pro m2 2022 USBC, running Sonoma, using Apple AV adapter works to display on a connected monitor, either mirror or extended. However the same configuration when connected to a Projector recognizes the projector, but will not display on the projector. In extended mode the mouse pointer is not displayed on either projector( which shows blue screen) or laptop screen initially. When I slide the track pad down the mouse pointer appears on the laptop screen and is functional. But cannot get anything to the projector screen, still blue.

When I switch to “mirror” mode, still nothing on the projector screen.

MacBook Pro 13″, macOS 14.0

Posted on Oct 20, 2023 8:47 AM

Top-ranking reply

EruditeLuddite

Level 1

8 points

Posted on Mar 19, 2024 1:45 PM

Just an update on how I solved this in case it’s of use to anyone else.

In my specific context I was lecturing and the wooden podium I was using had connections for VGA and HDMI available.

However I started to suspect that behind the HDMI connector on the podium was something that actually was trying to convert that to a VGA signal. So there was not a “pure” HDMI connection straight to the projector.

According to the venue organisers PC laptops don’t tend to have problems with their projector but Macs do. It’s my suspicion that Macs assume that they can do proper HDMI things with an HDMI cable connected and that PC laptops don’t try to be so clever. And/or that the (hidden and assumed) HDMI to VGA converter was interfering with the Mac to projector signal in some way.

I resolved this in the end by purchasing a USB-C to VGA adaptor from Apple for an extortionate sum and just using the VGA connector on the podium. This is the one - USB-C VGA Multiport Adapter…

https://store.apple.com/uk/xc/product/MJ1L2ZM/A

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MacBook Pro recognizes the Projector but no display

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