Secondary monitor not working on hackintosh. How to identify the problem?

Question

hackintosh

Colleagues, welcome!
The next problem: after a year of work, the monitor was released and decided to make it additional, respectively, the main one works from the motherboard on DVI, there is also a VGA and HDMI input, plugged it into VGA, when restarting the hackintosh, it works for some time (new monitor, additional), approximately under the end of the download when the apple logo hangs, it is cut down.
Tried to boot with the -v switch, nothing suspicious in the logs.
Please help me to find the cause of his chopping. Where exactly to dig? Thank you.

Answer 1

Probably in kexts vidyuhi or clover settings. You can try through another connector, I used to get a picture on HDMI on a TV set, but not on a monitor. The vidyuha is probably not set up well enough.