VM fails to start due to USB Mapping invalid

RedLab

New Member
Sep 20, 2024
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I set a USB radio to passthrough proxmox to my Home Assistant VM. This works fine, but sometimes I have to remove it. If I try to start the VM without the USB device plugged in, the VM will NEVER start, with this message:

TASK ERROR: USB Mapping invalid (hardware probably changed): usbdevice '10c4:ea60' not found
This makes no sense to me. Why wouldn't it just keep booting after this? It is not a boot device or a necessary device. It is not necessary for the VM to start in any way. It's not like it tries to boot the OS and fails or hangs, either. The VM flat out will not start.

Is there a setting I can use to have it boot anyway? With the nature of USB and what it is designed for, it is kinda ridiculous that the VM won't start if a passthrough device isn't there. Imagine an OS not booting if you unplugged a mouse or headset while it was off.
 
PVE cannot know whether the device is vital or not. but it might make sense to have a flag to indicate that? please file an enhancement request at https://bugzilla.proxmox.com