Dne 15.5.2019 v 11:46 Oliver Neukum napsal(a):

Most helpful. First, try to replicate this with the iommu disabled.

I am trying this with "iommu disabled" in bios, but system crash too: https://paste.ee/p/wUgHl

Secondly, make a proper bugreport mentioning the affected kernel version (5.1)

How can I do this?

Thirdly, if possible replicate this with the vanilla kernel from kernel.org

I am afraid, that is not possible. My skills is not too good - is there some procedure to how do this?
I made test with mainline kernel 5.1.2 from https://kernel.ubuntu.com/~kernel-ppa/mainline/
but computer crash on boot (kernel panic: unable to mount root fs...).