[SOLVED] Black screen with Dual Monitor connected

[essx]

Another Fix:

Radeon 580 will not support second monitor

SOLVED: This fix is so simple. All You have to do is change Your SMBIOS Version to 6,1 (Mac Pro 2013) This is because if You have a iMac's SMBIOS version (with the built-in display), the system will recognize only one display as the built-in one. If You change the version to the Mac Pro one...

www.tonymacx86.com

Thank you! It works on my configuration. It wokrs without need to turn on the CSM in BIOS. I just turn the SMBIOS coputer model from iMac to Mac pro (late 2013) then it works.

 

[Logic]

Thank you! It works on my configuration. It wokrs without need to turn on the CSM in BIOS. I just turn the SMBIOS coputer model from iMac to Mac pro (late 2013) then it works.

Nice, remember that You will not be able to export files w/ Final Cut Pro X

 

[essx]

Nice, remember that You will not be able to export files w/ Final Cut Pro X

Thanks for your reminder!

 

[Logic]

Thanks for your reminder!

You're welcome! =)