After lots of testing and troubleshooting, it seems it's a hardware and software combo. I'd be interested if one of you tried the latest Public Beta release on one of the machines for testing to see what results you get. As I've burned through beta releases of MacOS Sierra, I have had success and improvements in my external monitor performance. I'm wondering if the issue is just more common in the 2016 models. My brother has a 2015 model and has the flickering issue across OS X/ MacOS releases. Same here! Ok on 2015 model, broken on 2016 model! I'm beginning to believe there is some sort of hardware issue involved here and am considering returning the product. This was occurring with same OS revision and therefore software issue likelihood is reduced. I purchased a new Macbook 12" Fall 2016 and the problem persists with same USB-C adapter and monitor that worked fine before. 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. #Usb to hdmi adapter for apple mac#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. Windows: 10/8.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. SMOOTH HD VIDEO - Minimum i5 Core 2+ GHz CPU to prevent video lag NOT BI-DIRECTIONAL - Adapter only operates from USB to HDMI/DVI SEPARATE CABLE REQUIRED – An HDMI or DVI cable is not included Create more space around your desktop by connecting a 3 foot Cable Matters USB 3.0 Extension cable. Connect a display with DVI using the included HDMI to DVI adapter for video only. Arrange the connected monitor in primary, extended, or mirror mode. Add a monitor to a computer without HDMI or add an additional display when the other video ports on your computer are occupied. The Cable Matters USB 3.0 to HDMI Adapter is an easy way to connect a display with HDMI to a computer with an available USB port. Connect More with Cable Matters A/V Adapter Products
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