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Random Screen Flickering on ubuntu and kde (including hdmi second monitor)

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First of all, I am a novice linux user and I really do not want to abandon it. Hi, I have been having screen flickers since I had my laptop, I tried lots of solutions and anything related that can be a solution on the internet and I am still having this issue.(I installed different distributions such as Ubuntu 20.04.3, Ubuntu 21.10 and now I am on kde 21.10 (with plasma 5.22.5) ). My laptop has Windows also, but I really did not have a chance to test it enough whether this problem happens there or not. It happens like in this image for nearly 5 seconds and computer restarts itself. It happens both on wayland and X11. My computer has two graphic processors (Intel UHD Graphics and NVIDIA Geforce GTX 1650 Ti/PCIe/SSE2). I even tried looking at to the syslog file, but I am not qualified to understand the problem. Hence, I can share that file also stating the exact time of the flicker when it happens again. Any help appreciated.

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