I have run into a bit of an issue with my setup. I have passed through a usb pci card to my windows 10 vm and all is well as long as I do not shut down or restart the vm. Not always but often when I shut down the VM the card is no longer available to the host or the VM. Using lspci cmd the card still shows however at the end it changes from (rev 1) to (rev ff). Once this happens the only way I have found to fix it is to restart the host machine. I have fast start in Windows disabled as well as hibernate and am on high performance power profile.

 

So my first question is if anyone has any ideas on how to correct the issue so that upon restart/shut down, restart the card is always available?

 

Second question is assuming I can not correct the problem is there any way to reset the card from the cmd line without having to restart the whole server? Thus far everything I have tried comes back with permission denied.

 

Thanks in advance.

I am having the same issue.  works fine the first time i start it up. Not sure what to do. 

Thanks

Update: turns out this was an issue with the card itself. Swapped it out and have not had a problem since.