Macbook 2016 HDMI output flickering

Hi snappath, is this information covered in this message thread or elsewhere? Please provide more info on this exciting news! :)

I have this same issue. I'm running the 2016 Macbook m7 with Sierra 10.12.1.

I've connected a Dell ST2420L via the apple official USB-C Digtal AV Multiport Adaptor, I have one at home and at work and they both flicker after wake from sleep and then intermittently throughout the day. Seems to occur sometimes when closing/opening apps, though this could just be coincidence. When doing a full reboot it seems to settle a little, but then after a few sleep/wakes it starts to play up more.

Having exactly same issue. I took my Macbook to a GeniusBar, they had it for 1 week, did all sorts of testing and came back saying it was normal behavior if I didn't reboot the laptop daily. There was nothing to do and I had to cope with it.

I can't believe Apple is asking me to reboot my laptop every single day. Back to the 90's. Shall I do the same with my iPhone? My iPad? My Apple Watch? I have not rebooted any Apple device in months, other than to upgrade.

I got that too...it does say in the email it's confidential so I can appreciate the censoring. Sadly my link in the email isn't working so have contacted them for help. Fingers crossed, I think there's a fix just around the corner.

I haven't received any email from apple, but will try beta 3 available today to see if it is fixed.

Fingers crossed 🙂.

Issue feels resolved with Apple adapter still exists on OWC and Dell usbc docks. Time will tell if it stays working but so far so good for the last 16 hours.

Hello.

Are you referring to sierra latest beta or something else?

Yes.

Good news indeed! I am downloading now.

I have VGA adapter but issues are almost the same. Will report asap.

How do I get access to this BETA?

Enroll on the public beta testing program on Apple website with your Apple ID. You will have to install a small tool on your mac and then receive updates on App Store.

beta.apple.com

I haven't yet had the chance to connect to external projector, but today morning I will.

I've enrolled and I'm now on Beta 2. No flicker yet but the actual upgrade took a whole lot of reboots and forced power downs so that is as likely to have cleared it temporarily. Let's see.

Will keep you all posted.

I've been using the Fix for 30+ hours with numerous sleep/wake cycles and 10+ unplug/plugs. Seems to be working. Using the apple adapter to run a dell 4k monitor as well as a anker usb3 gigabit adapter/hub with a keyboard and mouse connected.

Using beta3 results (VGA adapter), SMC and NVRAM reset:

- no flicker so far

- after a sleep sometimes image gets blurry on the first couple of seconds but stabilizes (using external projetor several times, on a monitor just once - see picture)

- takes longer for image to reappear after sleep (maybe 2-3 more seconds than before)

- after sleep sometimes the resolution is "lost", after wake up need to go to settings and fix it (again with a projector)

- resolutions up to 1280x768

- lots off sleep/wake cycles to test this out

I believe the projector issues may be related to it being "public" and cable may not be in the best condition.

I am seeing weirdness the first 2-3 seconds after plugging in the hdmi adapter as well. Looks like the monitor and adapter syncing up. As long as the screen doesn't go black every 10 seconds I'm happy... how sad Is that...