Home › Forums › CAC-1070 and 1170 HDMI 2.0 adapter feedback topic. › RE: CAC-1070 and 1170 HDMI 2.0 adapter feedback topic.
Slightly interesting problem: CAC-1170 is working well at 4K60Hz for me, but it prevents my Mac Pro from booting up. I get a black screen and no startup chime. I can get it to boot by unplugging the HDMI but leaving the adapter plugged in. It doesn’t matter if the TV is on or off. Here’s my details:
Mac Pro 5,1 OS X 10.11.3
Sapphire Radeon HD 7950 Mac Edition
CAC-1170 on mDP w/ AmazonBasics 18Gbps HDMI cable
Again, the video works great, just doesn’t like booting up anymore. I’ll send this message to support as well so I can try the new firmware. Thanks!