Host lost iGPU & Network after guest reboots

[AkiMisaka]

CPU: Intel i7-7700
GPU: Intel Graphics HD 630 & NVIDIA Geforce GT 730
Motherboard: ASUS Prime Z270-P
Disk: WD SN750 & SKHynix PC711

I set IOMMU on and passed-through GT 730, NVMe PC711 and 3 USB Ports to a Windows 10 LTSC guest machine. Whenever I reboot my guest machine, the iGPU of host will stop output and host & guest will both lose thier network connection while the network controller itself is not down (signal light still flickering). Could anyone help? Thx.

Attached is the report generated by pve.

 

[leesteken]

I set IOMMU on and passed-through GT 730, NVMe PC711 and 3 USB Ports to a Windows 10 LTSC guest machine. Whenever I reboot my guest machine, the iGPU of host will stop output and host & guest will both lose thier network connection while the network controller itself is not down (signal light still flickering). C

This is usually a sign that one (or more) of the PCI(e) devices that you pass through does not reset properly and takes the whole host down. Either use a different device or find a work-around (on the internet) for the reset issue for that device.