No Network Adapter in fresh Windows Server after Upgrade to Proxmox 7

[t.lamprecht]

Thanks for the heads up, appreciated!

 

[fiona]

Hi,
thank you for the report!

Now, there is some talk in these threads about 8.1 not working again.

Yes, we can confirm it's broken again in pve-qemu-kvm >= 8.1.2-1.

I haven't tested this, but if I had to take a wild guess, I'd guess that this commit breaks it again
x86: acpi: workaround Windows not handling name references in Package properly - https://github.com/qemu/qemu/commit/44d975ef340e2f21f236f9520c53e1b30d2213a4

This is indeed the culprit. Since that commit was only fixing a cosmetic issue, pve-qemu-kvm >= 8.1.2-2 will include a revert to avoid the breakage until there is a proper fix.

 

[JonKohler]

Great! Happy to help. We're all in same boat here, so we're happy to collaborate on making sure this is smooth for all QEMU based folks. Oddball bugs like this are never fun.

Good thing is that I think we've at least got this bug cornered, so now its just a matter of "who dun it?" in between what QEMU fixups can be made vs what Microsoft might need to engage on to fixup their side.

 

[d4ch5]

Hello,
after diging around with the same issue and testing many ideas from the forum and the www, here is what worked for me.

1. Install Windows and start it up as usual
2. Mount the VirtIO Drivers Disc
3. Install Virtio-Win-Gt
4. Install Virtio-Win-Guest Tools
5. Open the Device-Manager and Deinstall the ReHat Virtio Ethernet Adapter (Select Delete Driver Files)
   
6. Seach for changed hardware
   
7. Ethernet-Controller will appear
8. Right click, install drivers and select the mounted disc as source for drivers (Make sure to include subfolders)
   
9. Windows will install the drivers from the disc and the eth-adpater should be usable

 

[justinKocian]

The issues disappear when using the q35 hardware model. Everything is working fine now.

The issues disappear when using the q35 hardware model. Everything is working fine now.

So I tried to test this. First, I stopped the machine > changed the machine type (OS Type in the hardware settings) from q35 to the default i440fix. That didn't seem to help. I also tried creating a new machine with the correct settings, and that fixed it!!!

Thanks!