How do I test the Thunderbolt port, when the Apple Diagnostics believes everything is working?
MacBook Air, OS X Yosemite (10.10.4)
Posted on Jul 21, 2015 7:23 PM
Q: External Monitor has no signal via the Thunderbolt cable
Hi,
Check out Thunderbolt FAQ's > Thunderbolt ports and displays: Frequently asked questions (FAQ)
Video Troubleshooting Internal and External Monitors