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I'm trying to use virgil OpenGL acceleration on ubuntu 20.04.2 both host and guest, but I get only 1/4 of the screen no matter what I do:

ation

It's an intel i7 11th gen, Iris Xe GPU (Dell XPS 13)

UPDATE: as pointed out below, the problem is with scaling. How can I make this work with scaling on?

Guerlando OCs
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  • It's probably an issue of scaling. Your laptop screen uses a (maybe 2x?) HiDPI scaling setting, yet `virt-manager` does not seem to support this. Maybe you should try GNOME Boxes? – galexite Aug 15 '21 at 22:02
  • @galexite indeed I use scaling, but I'd like to stick with virt-manager – Guerlando OCs Aug 15 '21 at 22:12
  • I guess the acceleration needs to paint directly which makes the later scaling incompatible. What does happen if you bump up the resolution in the guest - does it get bigger then? – Christian Ehrhardt Aug 16 '21 at 09:24
  • @ChristianEhrhardt nothing happens, stays the same – Guerlando OCs Aug 16 '21 at 14:23

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Check this link; How to use OpenGL/3D acceleration in virt-manager with ubuntu?

It looks like they were having a similar issue and they found a work around. Good luck!

Erniemenendez
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