2018 Mac mini static after sleep mode

I had this problem a few years ago. In my case, it turned out that the HDMI cable I was using was failing. Try swapping out the HDMI cable with a couple of others and see if that changes anything. Also see whether any of the cables are HDMI 2.0, or an older version. I bought and installed a new HDMI 2.0 cable, and that immediately solved the problem for me. Good luck!

I am turning off/on my display when waking mac mini, that works. It's display handshaking with mac mini bugged, seems like display is waked earlier than mac mini, thus this handshaking issues.

Did you file a Bug Report to Apple.

https://bugreport.apple.com/web/?draftID=752413

I have same kind of problem with the Mac mini 2011 model. I have PC and Mac mini same place and connect to same monitor (AOS). Only the Mac cause problems. So it is enough, if I take sleeping mode away? But it doesn't explain everything because, if I turn on bathroom light in the same electrical conductor, my monitor start making white noise and signal is gone. I have also Mojove.

I have this same problem. Static after waking. I'm using an HDMI cable. I wasn't having this issue on my MacBook Pro. I got a new Mac mini and had this problem out of the box

I also have this issue. I have one monitor (ASUS) and both it and the HDMI cables work fine with all my other devices/computers. There are a lot of posts around the web (including on Apple support communities) about monitor-related issues (for the Mac Mini 2018) and none of them appear to be resolved. It's been an issue for this particular model at least since November (when the computer was released?).

I called support and they told me to reset the SMC and then to reset the NVRAM/PRAM. I thought that was supposed to fix it, but it continues to happen. I have used that method several times since contacting support, but I just can't do this every time this happens i.e. every time my computer goes into sleep mode. Already I have to do it several times a week - and it usually takes numerous tries - sometimes as many as 50 or more. I can't believe Apple would expect me to set aside several hours a week to starting and restarting the computer. Clearly that's not normal. I'm about the call support here in a little while because this time I can't get it to come back on and I've been trying for a long time.

Curious if turning the monitor off (and then immediately back on) works for you? I've experienced an (intermittent) static screen from the get go with my 2018 Mac mini, and that was the solution that worked for me. Also, since 10.14.3 update, the static screen after waking from sleep has been far more infrequent (at least for me).

Hi

does the "static" goes away after few seconds ?

If yes, get new HDMI cable.