The reports of problems with the operation of external displays on the new Macs with Apple’s M1 chip persist: buyers of the new Mac mini may see conspicuous pink pixels that appear in different places on external screens. Initially, the error only occurred on the login screen and could easily be ignored there, as users report.
The symptom also shows up later in normal operation, for example in the Finder or in applications, and then becomes correspondingly annoying.
Apple calls a workaround
Apple is aware of the problem: “Pink squares or pixels” can appear on monitors connected to the new Mac mini, as the manufacturer explains in an internal memo to repairers – this is currently still being investigated. According to user reports, the error occurs primarily on screens that are operated via HDMI on the Mac mini.
As a troubleshooting step, Apple recommends putting the Mac mini to sleep, waiting two minutes and waking it up again, then unplugging and reconnecting the monitor and, as a last step, changing the resolution in the system settings for monitors. If the error occurs again after a restart, the procedure should be carried out again, it says in the Macrumors published document.
Screen problems on M1 Macs
The next major update for Big Sur should appear in March or April at the latest.