How to Fix Screen Flickers after High-Sierra Update?

Even though Apple promises a lot of advantages after updating to macOS High Sierra of the latest version, the users continue reporting about different annoying problems that take place over and over again. One of them is the screen flickers. Well, it is not actually a single problem. As a rule, a Mac owner faces two problems in one. They are:

  1. Issues with Bluetooth keyboard and mouse;
  2. Screen flickers.

Speaking of the first one, the users discover that they lose Bluetooth keyboard and mouse connection. Some users cannot restore the connection until the reboot.

As for the screen flickers, it appears to be a harsher issue. The users face this problem transferring between desktops (a.k.a. Parallels Desktop) as well as on some built-in Apple tools. It may barely take place, but trust us – it is rather irritating!

Some users believe it may be caused by the fact the CUDA driver update request appears after the update. It says that Update is Required, but is it really the key? Besides, the Install CUDA Driver option is unavailable in most cases like that.

User-Recommended Solutions

Those who have problems with Bluetooth Keyboard & Mouse recommend unpairing the devices and pairing them again.

It also matters which applications are causing most of the discomfort. One of them is Slack. Sometimes, the app’s support must help instead of the Apple official support. The Slack support said that most probably, there is an error with Chromium as some apps apply it in the underlying framework. This bug conflicts with macOS High Sierra 10.13 and NVIDIA graphics processing units.

remove chromium

It seems like Chromium has patched the error in the most recent version. The developers along with the Apple support usually do their best to solve the problem, but it is not always possible as the primary cause is difficult to detect.

If the matter becomes too annoying, try giving the problematic app a go on a browser.

Advanced Methods That Experts Recommend

Another thing you can do is attempt to resolve the issue with the help of Terminal. Mind that it might be risky. Experts suggest that only experienced users should try that method.

  1. Launch Terminal on the target Apple computer. To enable the Terminal window, move this way: Finder → Go →
  2. Copy-paste the offered command EXACTLY the way you see it:

cd /Applications/ ./ And then put in –disable-gpu-rasterization

Whenever you meet Slack, replace this name with the target application that drives you mad. It is important not to make a single mistake when typing as the smallest typo may harm the system.

While the third-party app developers are actively analyzing the problem of screen flickers trying to find a solution, look at one more option that may help.

Another Simple Solution to the Screen Flickers on macOS High Sierra

If you face flickering of some images when browsing the Internet, it is obvious you would like to stop this irritating visual effect as it is not fun at all. The last resort is a grey or blue screen. It is a sign that something is going wrong with the entire Mac-to-display connection.

The primary thing to do is reset your computer’s NVRAM. It is a type of memory that is non-volatile compared to a common RAM. In other words, this sort of memory saves data even when the Apple computer is switched off. That is why switching off the device and turning it on again will not help. Still, the fix you may see below is the fastest one.

  • Switch your computer off. When switching Mac again, keep holding Command + Option + P + R keys during the startup process. Wait until you hear a couple of chimes or until the screen blinks two times.
  • Make sure to reset the System Management Controller (SMC) as well.
  • Switch off the Apple device once again. Push and keep holding the Shift + Control + Option + Power buttons. Wait for ten or fifteen seconds.

We hope, at least one of methods described above will help you resolve the screen flickers issue on your Mac.