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I currently use a Dell U2720QM monitor, which occasionally experiences screen flickering (3 times in 4 years).
I previously thought it was due to unstable voltage or poor connection, which usually resolved after powering off for a while and restarting. However, last night multiple restarts didn’t fix the issue.
After some research, I found that screen flickering seems to be a common issue with Apple M series chips, especially M1 and M2, and BenQ monitors also experience this problem.
There are various proposed solutions, each with their own reasoning:
- Abandon Type-C and switch to HDMI
- Disable freesync
- Turn off True Tone and Auto Adjust Brightness
- Use Colour LCD color profile
- Download Dell Display and Peripheral Manager Application (incompatible with my older monitor)
- Lock resolution to 60Hz
- And more
None of these methods worked for my situation. Finally, activating LCD Conditioning in the monitor’s hardware settings resolved the flickering issue.
Additionally, some users mentioned that the open-source software aiaf/Stillcolor can permanently fix this issue by disabling Temporal Dithering. I’ve installed it as a precaution.