Re: [PATCH 1/3] ui/gtk: skip drawing guest scanout when associated VC is invisible

[Daniel P . Berrangé]

On Thu, Feb 01, 2024 at 06:48:58PM +0000, Kim, Dongwon wrote:
> Hi Marc-André,
> 
> Thanks for your feedback. Yes, you are right, rendering doesn't stop on 
> Ubuntu system
> as it has preview even after the window is minimized. But this is not always 
> the case.
> Some simple windows managers don't have this preview (thumbnail)
> feature and this visible flag is not toggled. And the rendering stops right 
> away there
> when the window is minimized.

This makes me pretty uncomfortable. This is proposing changing QEMU
behaviour to workaround a problem whose behaviour varies based on
what 3rd party software QEMU is running on

What you say "window managers" are you referring to a traditional
X11 based host display only, or does the problem also exist on
modern Wayland host display ?

If the problem is confined to X11, that would steer towards saying
we shouldn't try to workaround it given that X11 is very much
obsolete at this point.

With regards,
Daniel
-- 
|: https://berrange.com      -o-    https://www.flickr.com/photos/dberrange :|
|: https://libvirt.org         -o-            https://fstop138.berrange.com :|
|: https://entangle-photo.org    -o-    https://www.instagram.com/dberrange :|