I had a similar problem a few posts lower. The install that was fine on v33 and v34, now no longer “wakes up” the monitor that I am using for my arcade.
I have tried several solutions to no avail, but the install works perfectly on my TV and on other spare monitors that I have. For some reason, After the splash screen it no longer “handshakes” my arcade monitor and I have to manually select the monitor input each time.
The weird thing is that the monitor does not go to sleep, nor does it say no input found on HDMI, it just stays lit but black until I hit input. After manually pointing to HDMI, everything works fine.
If I figure anything out, I will post here and in my thread.