Originally Posted by Melanie78
I really have no idea, why I have these problems.
Well there is nothing that looks obviously wrong a few things you can try:
1. Pass iommu=soft to the kernel (should be fine on AMD systems though).
echo >> options nvidia NVreg_EnableMSI=1 > /etc/modprobe.d/nvidia.conf
3. Try disabling cool n quite in the BIOS.