![]() ![]() I had a Macbook 12" purchased Fall 2015 with USB-C HDMI adapter and it worked fine. as the problem is also in the 2015 12" MacBooks edited October 2016 PS I have the exact same machine as tskwara, but we figured out in our support thread that it's not tied to a particular processor, RAM, assembly line, etc. A technician (or the original power management problem with the USB C / HDMI functionality) fried my power hardware in the first machine. This past week, my local Apple store had to replace my machine after they replaced my I/O cable trying to fix the problem (didn't fix it). ![]() For most people the type of adapter, monitor, and/or cable (above HDMI 1.4b) used, does not fix the problem - though some setups have a more tolerable user experience. Problem increases when resource heavy tasks happen like loading video, plugging USB devices into the adapter, etc. I've had varying success with Sierra Public Beta releases. Here's the thread I'm in: Īfter over a month of troubleshooting, consensus is it's probably going to require a software or firmware related fix. No one I've talked to from Apple had ever heard of it. There are 3-4 threads for the same problem - no one from Apple stores to phone support to corporate have acknowledged this problem. Thanks for the write up AppleInsider! It'd be great to have some advocacy on this with some further press. Still others said the problems persist -?and in some cases are even worse -?when using alternative third-party adapters for external displays, further suggesting the problems could be related to the MacBook itself, and not the adapter. Some said the problems appear to be worse when the MacBook returns from sleep mode. Others, however, had no luck with that method. Some users said they were able to fix the problem by blowing into and clearing out the USB-C port. Users posting on the thread said the problem affects MacBooks running both macOS and Windows, including the latest Mac operating system, Sierra. Notably, the issue does not appear to affect the previous-generation 2015 MacBook, just the latest model. Specifically, the screen displays noticeable flickering when connected to the thin-and-light notebook via Apple's USB-C Digital AV Multiport Adapter. In a growing thread at Apple's official support website, users continue to report problems with the 2016 MacBook when used with an external HDMI display. ![]()
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