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:


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?

  • 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 at 22:02
  • @galexite indeed I use scaling, but I'd like to stick with virt-manager Aug 15 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? Aug 16 at 9:24
  • @ChristianEhrhardt nothing happens, stays the same Aug 16 at 14:23

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!


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