Mac OS X
Q: 2015 iMac Fails to detect external monitors when using Thunderbolt to HDMI
2015 iMac running ProPresenter 6
Front Monitors
Thunderbolt to HDMI > HDMI Splitter > Two HDMI xmitters via cat6 to two receivers > HDMI to Projectors.
Stage Monitor
Thunderbolt to HDMI > HDMI Cat6 Baluns > HDMI to Projector.
The system has been running flawlessly up until this morning before church.
Generally the iMac was not detecting the external displays. Normally when you start the computer all connected displays fire up.
For a while the rear stage display would work, eventually that went completely out.
SMC and PRAM reset several times. HELP, HELP HELP...
iMac, iOS 10.0.2
Posted on Oct 2, 2016 5:03 PM