Comment 31 for bug 1899336

Since I just had the system "drop monitors" while in the UEFI with no OS booted, this might not be an OS issue at all.

It can't be a docking / USB-C issue either, since the system sometimes can't even switch to internal display and it also crashes with an external monitor attached directly via HDMI.

I therefore suspect that either the iGPU in the Ryzen 4000 or the system memory is defective. I will get in contact with Lenovo about the issue and suspect that it will require motherboard replacement.

Just wanted to report back that this was likely observed on defective hardware and the issue might not show up on a "healthy" system.