Host cannot enter hibernate or standby mode USB Passthrough enabled for guest

[DNS]

Hello,

Whenever I have a running guest with USB passthrough enabled for it, the Host doesn't properly enter standby or hibernation. The result is a limbo state where the host freezes up in the middle of entering a power saving state - never succeeding to complete the operation. This needs to be resolved with a hard shutdown. This behavior is independent of all guest types I have worked with. It is the same whether a blank device filter was used or not.

The USB functionality itself is working great with no issues whatsoever. I am using the EHCI controller as I do not have any legacy peripherals.

I didn't think a Guest log was relevant but will attach one if necessary.

[Frank Mehnert]

Duplicate of #10021, let's continue the discussion there.