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I use systemd-boot. My PC outputs video to monitor when in UEFI settings or in bootloader, but when kernel is booted monitor recieves no signal.
It started happening from nothing, I was able to temporarily fix it by booting to Arch Linux installed on my USB drive(everything worked there) and then rebooting to main nvme Arch Linux installation.
Now it does not output anything to screen no matter what I am booting(I tried same USB drive, Arch Linux ISO from ventoy, Windows 11, main installation but with linux-zen and all the fallback initramfs).
I can get monitor output by using software rendering by adding "nomodeset" kernel parameter but it gives terrible performance and low screen resolution.
Also I can ssh into my PC while it is running Arch Linux but does not output anything to monitor, furthermore, I can run llms utilizing my RX6600 using ollama-rocm package with Environment="HSA_OVERRIDE_GFX_VERSION=10.3.0" set in it's service file.
I installed my old Nvidia GTX 1650 SUPER and it works with nouveau drivers.
My RX6600 is only 1 year old and I am careful with it.
Here is dmesg: https://pastebin.com/raw/V6i6MF2w
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