[Windows/Arm] Multipass fails to create a Hyper V Gen2 VM

[jhueppauff]

Describe the bug When running multipass launch I get the following error

launch failed: The following errors occurred:
prosperous-saury: timed out waiting for response`

When looking in HyperV it looks like there is an issue with the image or boot loader.

The VM is created as Gen 2 VM. Gen 1 is not available. Might be related to Windows 11 on ARM (might be quite an edge case at the moment ;-))

To Reproduce How, and what happened?

1. multipass launch

Logs

[prosperous-saury] [2776] Cmdlet: 'New-VM -Name prosperous-saury -Generation 2 -VHDPath "C:/ProgramData/Multipass/data/vault/instances/prosperous-saury/ubuntu-22.04-server-cloudimg-amd64.vhdx" -BootDevice VHD -SwitchName $switch.Name -MemoryStartupBytes 1073741824' 
[prosperous-saury] [2776] Cmdlet: 'Set-VMFirmware -VMName prosperous-saury -EnableSecureBoot Off'
[prosperous-saury] [2776] Cmdlet: 'Set-VMProcessor -VMName prosperous-saury -Count 1'
[prosperous-saury] [2776] Cmdlet: 'Add-VMDvdDrive -VMName prosperous-saury -Path "C:/ProgramData/Multipass/data/vault/instances/prosperous-saury/cloud-init-config.iso"'
[prosperous-saury] [2776] Cmdlet: 'Set-VMMemory -VMName prosperous-saury -DynamicMemoryEnabled $false'
[prosperous-saury] [2776] Cmdlet: 'Set-VMNetworkAdapter -VMName prosperous-saury -StaticMacAddress "52:54:00:f4:cf:b3"'
[prosperous-saury] [2776] Cmdlet: 'Start-VM -Name prosperous-saury'
[prosperous-saury] Waiting for SSH to be up

Additional info

• OS: Win11 22H2 ARM
  • multipass 1.11.0+win multipassd 1.11.0+win
  • hyperv

[sharder996]

Hey @jhueppauff,

The issue is that Multipass uses images with a kernel compiled for amd64 which isn't going to work on the ARM architecture.

[jhueppauff]

Is there any support planned for ARM on Windows?

[sharder996]

Multipass doesn't look at the host architecture and the use of amd64 images is hardcoded right now. Unfortunately, we don't have any plans at the moment to change this either.