Macbook 2016 HDMI output flickering

I just received my MacBook Pro 15 inch (Late 2016). What a beautiful laptop. This is my first Mac. I'm hoping it can replace my old windows desktop. I connected two 24 inch Dell monitors (U2415, 1080p). Within 20 minutes one screen started going black for a second and then coming back on. I eventually unplugged it. And the remaining monitor started doing the same. I've installed the most recent beta (3) and I still experienced the issue. My last resort was to reset the SMC. I hope this clears the issue.

I'm running the MBP closed with a USB-C to DisplayPort cable.

On update to my previous post, resetting the SMC didn't not fix the issue.

Congratulations on your new shiny MBP!

You mention USB-C to DisplayPort. I do not see any Apple approved adapter to do that. Only USB-C to VGA or HDMI.

Have you tried an Apple certified adapter?

Same problem here. Macbook 2016 original apple AV multiport adapter on different external screens

I wold recommend trying a new 4K hdmi cable. Resolved the issue in my 2016 new Mbp touchbar- using multi port adaptor worked fine with - 4K Samsung, lG and lower res monitors. I did this a Best Buy with the Apple reb in tow. Both were very helpful. I bought the 9 dollar insignia brand 4K cable at Best Buy. Flicker gone!

Hope that helps others

Thanks. I'll give it a try!

Hello I have the same issue. Had it with the dongle, and now also with an Acer 4k USB-C display with no dongle. The only workaround that works for me is resetting the computer every time it sleeps, which is a pain. This is a big issue hope it gets fixed soon. I'm going crazy!

I bought two the USB-C Digital AV Multiport Adapters from Apple. Thank goodness they lowered the price by 30 bucks!

I've been using them with my two 24 inch Dell monitors and so far no more black screen flickering. If something changes, I'll update this thread.

I've had this problem for over a month with my MacBook. Now it's happening with the new PROs and not a peep from apple. Unreal.

I forgot to mention that I upgraded to macOS Sierra Public Beta 3.

same problem here, also usb devices have problem. I will recommend all people not to go for the new macbook usb-c only line.

all my usb devices get unstable connections. hdmi as well. better cable help, pram reset helps, but don't solve the problems.

not sure if it is a firmware problem or if usb-c plug is not stable enough physicaly.

Reporting back. I downloaded and installed the beta on Nov 21 (5 days ago). I've had 2 glitches so far. It's a lot better.. but still.

share your experience in all forums and review comment section. only this way people will avoid buying and apple will have to act. all connections through apple usb-c ports are unstable and have problems, even power charging.

Hey kenofstephen I know that feeling. I've now had total radio silence from my engineer for 2 weeks. I invested a lot of time testing and reporting this, and a not insignificant amount of money buying additional adapters. I feel I'm owed as a minimum at least an update.

As it happens I'm still stable on the devices I need to display on after over a week of use. This is on the beta 3 release. It doesn't sound like it's a perfect fix for some people but the fact some people are having success points towards a software solution being viable. Which is good!

Don't give up yet! Silence + beta software which improves things (or as a minimum changes things) might be our best indicator that Apple are definitely aware of the issue and working to resolve.

Everyone - several people have stated that there are rumours of the new MBP having similar issues. I've had a google and can't find any evidence of this. Can those reporting please provide a reference URL?