Flickering Screen with macOs 10.12.4

Hi, I had this issue too, and after resetting my MacBooks NVRAM I solved the problem. Hold the power button down until the Mac shuts off completely, and then press it again and immediately hold down Command-Option-P-R.

My screen flickers too, since the update. But it's fine on my external monitor.

It mainly flickers in games, youtube-fullscreen videos, mac menu dropdown etc.

edit: I have the flicker on video, but I can only upload pictures. Here's what the flicker looks like for me

Yes. I have a Mac Mini hooked up to a Dell 24" monitor via Thunderbolt. I upgraded from 10.12.3 to 10.12.4 and now my screen is turning black periodically. I'm also seeing white lines going from right to left. I've posted about it in another thread.

I recommend reporting the bug to Apple at http://www.apple.com/feedback

Hopefully if Apple gets enough reports, they will work on a fix.

Hi,

Mine is a MacBook pro 13" with retina display (and just a little bit of background information i have had to have the screen replaced due to a widespread issue amongst the specific MacBook pro's- there was a repair programme put up for this even though before the programme was put up i tried to replace the screen for free as it was within warranty but apple had refused to do this. the repair programme was only put up due to many MacBook pro users complaining about the same issue and created a website about this! Additionally, i have had random issues with the laptop switching off and not coming back on although when connect to an external monitor i could see the MacBook was switched on.

Anyway on to this issue... I have had exactly the same problem! I notice this especially when I'm watching a video on youtube for example i have little lines across the video (multicoloured) thought i was going crazy but i noticed it after the update. I would try to screen shot the issue but it happens quite randomly.

I tried the above of resetting the NVRAM which helped for a few days but then the issue came back. So after this i wiped the whole laptop and set the MacBook up as new again (after backing up my files of course). However, this has not worked either. If anyone has any other solutions then please let us know!

So, I contacted apple and told them the above issues and their response was that it most likely does not sound like a software issue but rather a hardware issue. For me this is frustrating as I have treated my MacBook with such care and after paying so much for it i would not expect issues such as this especially just because i updated the MacBook. I mentioned that the problem I was having with the visuals which occurred after updating the MacBook and the response from customer service was that after an update sometimes an underlying hardware issue that has always been there may surface...

Why should an underlying hardware issue be there in the first place if i paid for a brand new perfect macbook?

My warranty ran out in January so i have no apple care left which I also explained to customer service and they simply stated that i would have to pay for any repairs and to take it in to the genius bar.

Upon doing some research I saw that there is a repair programme for MacBook users for the issues that we all seem to be having. However...this is only applicable for the older model MacBooks (2012-2013). I have inserted the link so you can see!

MacBook Pro Repair Extension Program for Video Issues - Apple Support

The problems that the link above mentions seems to largely resonate with a lot of the MacBook users in this thread.

I can also see that over 200 people have the same question too. For this reason I propose creating a website of some sort, like 'staingate' if Apple is not willing to repair without charge. As i do not intend to pay for repairs when there has been underlying issues with the MacBooks that was not our fault in the first place.

Sorry for the long message (first time posting!). Please let me know what you all think and if you have any other possible solutions.

I have the same problem on my MacBook Pro screen, but external screen is working fine.

This started to happen after I made update to macOS 10.12.4.

Mostly I see white random lines in Terminal app when pressing keyboard buttons.

If I open Terminal app in fullscreen mode, then it works fine.

I have a 13" macbook pro which is connected to external screen. I experience the flickering on both screens. But I cannot reproduce it any time. Sometimes it is gone. Sometimes only youtube videos are flickering very heavily.

This is strange. And annoying.

Did resetting the NVRAM help at least for a few days?

Change of hw could be an option to take. But I think this is more software related, since it seems to be introduced with the 10.12.4 update. Hoping that Apple will fix this with 10.12.5

Unfortunately, flickering was happened again at 3 days after replacing the motherboard. So I think it is 100% all about the macOS 10.12.4. But from the conversation between Genius and me, Apple has not confirm this os problem yet.

Eagerly await the fix updates...

Thank you for the update. If Apple isn't working on a fix and 10.12.5 is in Beta 4, it could happen that a fix could be expected not before 10.12.6. Looks like downgrading to 10.12.3 becomes a more feasible option.

The first reset did solve the problem for a few days and the flickering came back. After the second reset the problem didn't come back until now. The second reset is now 2 weeks ago. Hopefully, it is solved at least.

I started getting this flickering screen today on 10.12.5. Started up after I connected to a TV via HDMI. Reset the NVRAM and the issue didn't go away -- right away that is. About 10 mins after resetting NVRAM it did go away. Very strange.

edit: ok now it's back. It's something to do with Chrome I think. It went away then came back after using Chrome (59) for a few minutes.

I bought a MacBook Pro 13" 2017 Retina two weeks ago, and today the screen started flickering, brand new, just 2 weeks...,

I called to apple care and we made some tests, I erased the disk and nothing fix the problem, I have to go back to the store with my mac.

I have the screen flickering like it wants to give me an epilepsy attack. I believe the screen is working perfectly, this flickering only happens when I have a white background opened like google, or safari, or any app with white background. I am unfortunately off warranty for 2 months now and I called support and they told me they will replace the screen for $1000 on $1500 computer with I believe it´s absolutely barbaric.

As a workaround I have inverted the colors on my macbook and it doesn't flicker as long as it doesn't see white background. It was working perfectly last night. I will tell you what happened that night.

I decided to download Xcode and Visual Studio that night and each app was 5gb each. I lowered the screen display to the minimum all night to avoid the mac to get ever heated due to the downloads. So, when I woke up the computer hadn't dropped more than 5% of battery and it started doing that (the flickering).

I called Apple and then they said the repair was expensive, however my screen is working perfectly in a color inverted display, so my verdict is that the screen is absolutely fine.

I removed the downloads I did last night and I reinstalled the Sierra OS X update, I am running the latest 10.12.6. I haven´t had any luck.

Please help I don´t have $1000 to fix this.

I have this exact same issue but am on a Late-2013 15" MacBook Pro.

Resetting PRAM helps for a little but resurfaces in a few days to few weeks. The Apple Support specialist I talked to says it's a faulty Video Card but I've also read of many people also struggling with this issue.

Replacing the motherboard would replace the video card.

Very frustrating and seems like Apple is trying to force me to upgrade.

I will try disabling spaces on external monitors and report back.

Anyone have any permanent software (not hardware) fixes?

I am experiencing flickering and color dominated screen after macbook pro is left idle. This causes screen flash a different color, sometimes it is abstract fractals on the screen at those flashes. I am worried about if it gets more of those. This issue arised after upgrading to High Sierra on Macbook pro 2015 MF841