My Hackintosh under Yosemite works great with a Samsung 21-inch screen.
I only use the graphics processor Intel HD Graphics 4600 of my motherboard Gigabyte GA-Z97N-WIFI.
I have another screen 23-inch Apple Cinema HD Display (2002) I changed DVI (before he was ADC port).
It does not work on my Hackintosh but it works on:
- an old mini Mac DVI
- a new mini Mac on HDMI output via HDMI to DVI adapter
- an iMac via mini DVI to DVI adapter.
Is it a motherboard problem, kext files, or whatever other ?
Thank you for your answers.