There are a number of macOS Catalina users who reported that they find an issue where the screen on their Mac flickers when they are scrolling their image files. They reported it in the Apple Support communities page. Are you one of these people who face this issue as well? If you find this issue, then it is annoying and you have to fix it.
If it happens to you, then you are able to try to apply the methods below to fix this issue where the photos flickering on macOS Catalina when you are scrolling it.
1. Adjusting Screen Resolution
One of the methods that you are able to apply to fix this issue is to adjust screen resolution. The display resolution of your Mac determines the size of the objects and text on your screen. However, it is important for you to know that not all screens can support the high resolution settings.
If your graphics card is forced to unsupported high screen resolutions, it will result in malfunction. So, to fix it, you have to lower the display resolution. How to do that? The instructions below will help you to lower your display resolution.
- First, you have to click on the Apple menu icon on your macOS Catalina.
- After that, you need to click on the System Preferences option.
- Now, you must click the Displays option and then select Display. Select Scaled option and then you are able to adjust the value to be able to lower resolution settings on the drop down menu.
2. Adjusting The Display Settings
There is information that this issue comes up after Mac comes back from Sleep mode. So, to fix this issue, you have to disable the feature where the screen automatically turns off during idle time. How to do that? You are able to see the steps below.
- To adjust the display settings, you have to click on the Apple menu and then access the System Preferences of your macOS Catalina.
- After that, you have to click on the Energy Saver option and then click on the Power Adapter tab.
- Here, you have to set the value of Turn Display Off After slider to Never.
- You have to do the same thing in the Battery tab settings.
3. Switching To Graphic Card for Display
If you have done the methods above, but you are not able to get rid of the issue, then you are able to try this method to fix this issue on your macOS Catalina. It is important to note that depending on the Mac version, there is a feature on certain versions which permit you to be able to switch from the external to the onboard graphics card.
This feature is able to help you preserve the battery life, but it has been reported to be a buggy feature for some Mac units. So, you are able to disable it by performing the steps below.
- The first thing that you have to do is to click on the Apple menu icon and then you need to access the System Preferences.
- After accessing the System Preferences, now you have to click on the Energy Saver option and then you have to uncheck the Automatic Graphics Switching checkbox to disable it.
- If then you see that it permits you to be able to choose which graphics card to use, you have to make sure that you select the one which does not trigger the flickering screen issue.
4. Booting in Safe Mode
If you decide to boot your Mac into Safe Mode, it will clear your system and permit the kernel cache to be rebuilt after it boots up. It will be able to permit the corrupted files which cause the issue to be removed. When your macOS does not work properly, it is an important process. So, how to boot Mac in Safe Mode?
- First, you have to make sure that your Mac is off completely.
- After that, you have to hit the Power button to turn it on and then you have to hold the Shift key after you hear the start-up sound.
- When you see a login window and the label Safe Mode on the upper right section, you have to release the key.
- If you find that the issue does not come up when your device is in Safe Mode, you have to check whether your applications are up to date. In addition, you have to delete any accessories which are not important which are connected to your Mac.
5. Using an External Monitor
If your device is a Macbook, it is possible that the issue happens because your LED screen is having a hardware issue. So, you are able to try to connect an external monitor so that you will be able to see your screen from that monitor without any issues. How to do that? The steps provided here will help you to do that.
- The first step, you have to connect your external monitor to your Macbook by using HDMI or DVI cable.
- After that, you have to click on the Apple menu and then choose System Preferences. After that, you need to click on the Displays and then followed by clicking the Arrangement tab.
- Here, you have to make sure that you check the Mirror Displays checkbox to permit the duplicate screen view.
Now, you should be able to see your screen on your external monitor. It is important for you to note that it is a fast fix that you can do if you are in a rush. Or, if you need to work on your Mac as soon as possible, this fixing method can be your choice. If you want to check the hardware issue in your screen, you will need to contact Apple Support for getting help.
You are able to visit the Apple Store which is nearest to your residence to check your Mac. In some countries, there are features which enable you to book a repair appointment online and then you just have to send your Mac to them by using a delivery service. And then, you are able to check the repair status updates online.
On my daily job, I am a software engineer, programmer & computer technician. My passion is assembling PC hardware, studying Operating System and all things related to computers technology. I also love to make short films for YouTube as a producer. More at about me…