Macbook 2016 HDMI output flickering

Gotcha. But others are having this issue with just straight Mac OS right? I am.

I *only* use Mac OS and I have this same problem.

Yes, I only run macOS (Sierra Public Beta/GM and El Capitan both have the issue).

Been chatting with a lot of advisers at Apple. They have all told me they are unaware of an issue or any sort of fix. The next step is for me to take it into the Genius Bar and they're going to run diagnostics...

Saddening 😟

So, have you made any further progress with Apple support? Have they asked you to perform any other tests? I'm long since out of the 30 day support period, so I can't even file an issue - only recourse would be to drive to an Apple store and hope the problem would manifest.

Apple won't be able to fix anything over the phone. The advisors I spoke with were very patient but they didn't seem overly convinced about the issue. I don't blame them -- I can't even reproduce the problem on certain displays...

I will take my Mac to the genius bar this weekend and keep you all posted on what the tests they run.

I have been told by multiple advisors, however, that they have no information about this sort of error. It took them all by surprise.

I mentioned this thread and I was told that sometimes multiple people can have the same symptom but doesn't necessarily mean we all have the same problem.

What I told the advisors:

a. HDMI output display cuts out periodically anywhere from every 5 minutes to every hour.

b. Soft rebooting the OS solves the problem, until the computer goes to sleep again.

c. I've tried third party adapters and the official Apple adaptor. I've also tried multiple HDMI cables. I cannot reproduce the problem on my TV at home (Toshiba); however, my display at work (Sharp) has the issue.

d. I've tried resetting the SMC and PRAM and reinstalling OS. None of these have helped.

If they say they are unaware of the issue, ask them to look up Apple Care Case # 1184045304

I've been working for over a month with them do diagnose / debug. I've sent countless logs, screenshots and even photographs/videos. I've re-imaged the device, I've reset PRAM/SMC, I've tried all sorts of different cables/adapters/monitors. As they say... "NOT IN OUR HEADS" ... this is a real issue.

-ambanmba

Is anyone still experiencing this issue under the public release of Sierra?

I upgraded this morning and have been using my 2016 MacBook for the last eight hours without a single case of flickering or the screen blacking out.

This is compared to almost constant flickering under El Capitan.

I'm using my previously mentioned LG 27UD88-W connected via the USB-C port. It is also now running at 60 hz instead of 30 hz under El Capitan.

The problem seems to be unaffected by the macOS Sierra upgrade. Used Sierra all through the public beta process, and yesterday, did a clean install with the release version. Seems to have no effect on the issue - yesterday, after rebooting my MacBook, no problems. After letting the MacBook sleep overnight, I'm getting the flicker again today.

Running the latest developer beta, specifically 10.12.1 build 16B2327e, appears, based on a day of normal usage with plenty of plugging and unplugging and sleeping and two different external displays, one with the apple dongle, the other with an Anker one.... not to be exhibiting the problem.

I'll give it a couple of days to be sure, but this feels like hope.