Basically same problem from vanoudt/KOHAExtra
Tried all their steps nothing. Checked journalctl nothing that I could see.
sudo shutdown, systemctl poweroff all have the same effect, the computer turn off (rgb and fans spin down) then a second later it starts powering on again.
Neo Fetch output
OS: Fedora Linux 35 (KDE Plasma) x86_64
Host: Alienware Aurora Ryzen Edition 2.2.4
Uptime: 3 mins
Packages: 2351 (rpm), 5 (flatpak)
Shell: bash 5.1.8
CPU: AMD Ryzen 7 3700X
GPU: NVIDIA GeForce RTX 3060
Thanks for your help!