Actually going to answer my own question here.

So the libvirt version used by Qubes R4 is too old to accept `none` as `video-model`. However I 
can force stop a display window by creating a custom .xml in 
`/etc/qubes/templates/libvirt/xen/by-name` and commenting out/removing `<graphics 

Sorry to clutter the mailing list, hopefully Qubes R4.1 has a newer libvirt 


On 7/24/21 10:45 PM, Thomas Clarke wrote:
Greetings fellow Qubes enthusiasts,

I find myself often in a situation where I often do not need the display window 
of an StandaloneVM. This is often because I have opted to SSH or RDP into it 
from another AppVM. Obviously one solution is just to keep the window 
minimised, however I would like to completely disable it for a given 

The only thing I found which I thought would work was `qvm-features {nameOfQube} video-model none` 
but contrary to the docs on `qvm-features` stating "For available values see libvirt 
documentation about <video><model type=…> element:"; it appears there is a check enforced 
somewhere that only accepts certain values. Running the Qube after setting `video-model` to `none` 
returns `Start failed: unsupported configuration: unknown video model 'none', see 
/var/log/libvirt/libxl/libxl-driver.log for details` (it is worth noting also, that no error message 
is logged to that file).

Any input on achieving my goal would be greatly appreciated.

Kind regards,

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