After updating to Catalina, Mac Mini 2018 does not send any HDMI signal.
It was working fine today, until the Catalina update.
Can not enter safe mode nor recovery mode.
Tried resetting NVRAM, no change.
Just in case, I tried another cable and I also tried connecting it to AVR, but still no signal.
Mini is connected to 4K TV, I don’t have any other option (except USB-C to HDMI adapter which I don’t have).
Mac mini 2018 or later
cwanke72 mentioning lower res displays led me to workaround.
I dismissed it at first because I do not have any other displays except Sony 4K TV.
Then I remember Sony has two "30Hz non HDR" HDMI ports.
I connected Mac Mini to one of those, had to shutdown Mini (it was powered when I changed connection) and after I turned it on - signal was finally reaching TV.
Now I need to figure out how to make it work on 60Hz HDR port.
Yes, but private store, just kept the name here in our local town
I bought a J5 Create usb c to HDMI adapter from Staples of all places and it supports and works great at 3840 x 2160 at 60Hz .
Reset PRAM worked. First time, it did not, then I disconnected the laptop from the ac power and tried again. It worked.
Tried it on MacBook Pro -- no luck
Tried that -- worked before Catalina and for awhile after -- then clunk! Won't even show mouse pointer. And just HD, not even 4K!
No HDMI signal after update
