If your Mac screen has flickering lines, you can get rid of them by enabling the color filter. Switch to DisplayPortĬonsider switching to a DisplayPort cable if your Mac mini is connected to an external display with the HDMI cable. If you are running a Mac mini and having green vertical lines on the right side of your monitor, lower down the native resolution to something like 1080p, then switching it back is a potential fix. Given that the graphics card driver is included in the macOS update, you can go to the Apple menu > System Preferences > Software Update to check the available macOS version and follow the onscreen instructions to update the driver. Since the horizontal or vertical lines on Mac could be a result of outdated graphics card drivers, it makes sense to get the driver updated. Wake up Mac from sleep modeĪnother trick you can try is to put your Mac to sleep, wait for some time, then press any key to wake it up. You can also close the lid then open the lid. Move your Mac screen to different positionsĪ quick fix to resolve the horizontal lines on Mac caused by the connection issues between the internal hardware and the display is to slowly change the angle of your Mac's screen until the lines vanish. In which case, you can close the lid and let it rest for enough time (hours or a day) to see if the lines disappear. The horizontal lines on top and bottom of your screen are also likely to show under heavy usage and when doing tasks that require video processing. If your Mac is overheating or you live in hot weather, you should get an external cooling pad or a nifty app that increases fan speed to cool down your Mac. sudo powermetrics -samplers smc |grep -i "CPU die temperature" Type in the following command and hit Enter.Open Finder > Applications > Utilities > Terminal.Resetting the NVRAM and SMC are often on the top of the solution list to resolve the "green vertical lines on MacBook Pro screen" issue, especially for those appearing at startup.
SMC(System Management controller) stores crucial hardware settings such as thermal management, video switching, power functions, etc. NVRAM( Non-volatile Random Access Memory) is a small amount of memory on Mac that stores settings such as display resolution, startup disk selection, and recent kernel panic information. Move your Mac screen to different positions.Don't forget to check if the lines are gone after a solution. Again, these solutions also apply to vertical or horizontal lines on Mac with different colors. This section describes solutions to fix the green lines on MacBook Pro/MacBook Air/Mac mini/iMac and ways to figure out what caused the green lines on MacBook Pro screen & other Mac models.
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