Eventually your batt is going to begin losing capacity with continued.
Mac powerbook pro retina with external monitor pro#
My fear is that I may have to abandon the rMBP and revert to my old clunker DELL, due only to this one major issue issue. MacBook Pro (Retina, 15-inch, Mid 2015), macOS Sierra (10.12) Using it with an external monitor and the power adapter plugged in would be no different than using it without the monitor, and there is no battery drain when the power adapter is plugged in, so no worries. I am going to experiment with various settings I have found on other posts and forums, but most are specific to a fixed setup, whereas I need plug&play and don't have the time to fiddle with settings before each presentation. I have formatted the laptop and reinstalled software but it made no difference. This issue is only present on the Retina display, on external monitor, everything is fine. Usually after 2 minutes after the startup. It happening randomly, seems like the display is not synchronizing.
![mac powerbook pro retina with external monitor mac powerbook pro retina with external monitor](https://cdn.mos.cms.futurecdn.net/GkuEfHrgFXKw6xfXS5x8mn.jpg)
Recently my retina display started flickering. Without the screen plugged in the display is completely distorted and unusable. MacBook Pro 2015 A1398 i7-4770HQ R9 M370X screen flickering. However, now that I have higher resolution the image is blurry much like the OP but even worse and not usable. As the title says, the screen on my A1502 MacBook Pro only works with an external display plugged in. I finally found a solution with an "active" VGA adaptor from Cirago: Most are VGA and and most do not work with the Apple TB-VGA because it sees them as 640x480. I have to often hook up to an external projector at various companies for presentations and I never know which type of projector they will have.
![mac powerbook pro retina with external monitor mac powerbook pro retina with external monitor](https://appletoolbox.com/wp-content/uploads/2020/04/About-This-Mac-window-from-Mac.jpg)
Otherwise, it's a fantastic computer for running Windows (required for work) and Mac, my preference. I have a new rMBP 15 and I am having a major problem with hooking up to external projection systems.