Hey,

I was able to reboot my machine and run some tests tonight. From my
side, I am following the template in the following link:
https://github.com/ohthehugemanatee/win10vm. Same company, same
limitations - I am just skipping the networking part for now.

First, your command looks good:

ubuntu@ubuntu:~$ sudo qemu-system-x86_64 -nodefaults -S -display none -monitor 
stdio -tpmdev passthrough,id=tpm0,path=/dev/tpm0 -device tpm-tis,tpmdev=tpm0
QEMU 5.2.0 monitor - type 'help' for more information
(qemu) 

For my VM, I do get past tpm (yey!), but I am stuck on this other issue.
I am attaching the results of the commands bellow with LIBVIRT_DEBUG=1.
Sorry, I am really just guessing that this is the debugging info needed.

ubuntu@ubuntu:~$ virsh start win10.2 
error: Failed to start domain win10.2
error: Could not open TPM device /dev/tpm0: Permission denied

ubuntu@ubuntu:~$ sudo virsh start win10.2 
error: failed to get domain 'win10.2'


** Attachment added: "virsh_start.log"
   
https://bugs.launchpad.net/launchpad/+bug/1903864/+attachment/5457539/+files/virsh_start.log

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https://bugs.launchpad.net/bugs/1903864

Title:
  qemu-system-x86_64: -device tpm-tis,tpmdev=tpm-tpm0,id=tpm0: Property
  'tpm-tis.tpmdev' can't find value 'tpm-tpm0'

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