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I need to do this https://forum.zorin.com/t/my-monitor-gives-a-black-screen-when-i-change-the-refresh-rate/46547/6
Zorin Forum
my monitor gives a black screen when I change the refresh rate
✅ [FIXED] Black screen on external monitor at 120Hz+ with NVIDIA 550+ Linux drivers (Zorin OS) If you're using NVIDIA drivers version 550 or newer on Linux (e.g., Zorin OS, Ubuntu-based systems) and your external monitor shows a black screen or "no signal" when selecting 120Hz or higher, this guide will help you fix it. 🎯 Problem Monitor...
rpm-ostree kargs --append=<kernelargument>