raveenb

If your external monitor is flickering after your connect your apple mac that has apple silicon. And it didnt flicker if you connect an intel or other pc's. I have a solution for you

Problem

1. the issue is due to the how apple silicon gpu's render images on certain monitors.
2. i recently upgraded my old intel based mac book pro with m4 mac mini - great upgrade
3. but the external monitors that were working properly earlier with the intel cpu mac was now showing flickering.
4. the problem is that this flicker is not constant but it flickers when there are some shading of gray or transparency
5. the issue i found out after a lot of research is that its because of how the apple gpu's render.
6. apple gpu's use some tech call DCI dithering, which works great on apple monitors like the one on the laptop or apple's own monitor or some apple supported ones like LG Ultrafine.
7. but on mine like BenQ, this dithering makes it look very strange and uncomfortable to view

raveenb

If your Mac is not supported by the latest MacOS version. Worry not, you can use this open source software that will let you extend the life of your otherwise healthy and functioning Mac machines by installing the latest OS.

Visit OpenCore Legacy Patcher here https://dortania.github.io/OpenCore-Legacy-Patcher/ and follow the instructions.

My Macbook was stuck at Ventura, but now I am able to run Sonoma. All my tools, homebrew and casks and other softwares now work and dont complain about deprecation.