2015 macbook pro 15 detects external monitor but LCD screen is black
This is the second same model laptop with this issue.
When I boot the laptop the apple boot screen shows on the Dell monitor. The MacBook display is black. If I do Detect Display, Command F2, NVRAM Reset Command - Option - R- P, the display comes back on and works great. If I shutdown and restart, the same thing happens again.
Model N
Setup information: The laptop is connected to a Dell 2408WFP DVI to Mini Display adapter. (This monitor has worked on all my other MacBook Pro's)
Model Name: MacBook Pro
Model Identifier: MacBookPro11,5
Processor Name: Intel Core i7
Processor Speed: 2.8 GHz
Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 6 MB
Memory: 16 GB
Boot ROM Version: MBP114.0172.B00
AMD Radeon R9 M370X
I have tried everything I can find anything on the internet. Nothing seems to work. I'm not real thrilled about going to the Genius Bar.
MacBook Pro (Retina, 15-inch, Mid 2015), OS X Yosemite (10.10.3)
