--- A - Host stayed, Guest changed --- If that is the case then we can mostly ignore the Host. Never the less knowing the details what is used in the host is helpful.
As mentioned per your uname I assume you have `linux-kvm` used in the guest. That is meant as a reduced kernel for virtual environments. Chances now are high that: 1. the required intel module is no more built for this -kvm kernel 2. the required intel module is built but moved from the base to the extra modules In general please check (and report here) on both guests - lsmod (will show us if a module is missing on the guest without net) - lspci -v (will show us which driver is used - if any - on the passed through intel card. After we have above data, please try to install the kernel that isn't reduced. Should be: $ apt install linux-image-generic $ apt remove linux-image-kvm $ reboot Did the situation now resolve? Does the listing of lsmod and lspci now report an additional driver loaded compared to before? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1892422 Title: Pci passthrough interface not showing up in Ubuntu 20.04 but does show in 18.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1892422/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
