Target Display Mode

Dear, I have a MacbookPro 15" 2018 running on Ventura 13,4 and I want to use my iMac 11,3 (2010) High Sierra as a screen.

It previously worked perfectly with MacBookPro 15" from 2014 running on Monterey, I just needed to plug in the MiniDisplayPortCable directly into the MacBook and it worked. I didn't even needed to log in on my iMac.

Now with the MacbookPro 2018 it doesn't seem to work anymore. I am using a cable: MiniDisplayport to HDMI and I contact the HDMI cable through a universal USB-C hub.

I have tested the cable - iMac to other screen via MDP to HDMI and it works. I have tested the universal USB-C hub (HDMI to other screen) and it works also perfectly. So I don't think it is a cable issue.

I have tried the following as wel:

Reboot both machines, disconnect cable, reconnecting, cmd+F2 just gives a small sound coming from the iMac and does nothing.

I was really used to working on the 27" iMac, so I really am desperate to use it again.

Thanks for your advice!

Kind regards,

Jeroen