Automatic screen resizing for KVM guests no longer works

[NHellFire]

The driver now requires the window manager handles the resize itself, by setting a property that the WM is expected to check and then resize the display to the suggested size.
An explanation of how it works is here: https://bugs.launchpad.net/ubuntu/+source/unity8/+bug/1670713/comments/1

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[ndorf]

Isn't it a little weird for spice-vdagent to suddenly require compliance from every window manager to work properly, when previously, automatic resize used to work completely without regard as to what desktop environment was running?

I tried to raise that question with the devs here: https://bugzilla.redhat.com/show_bug.cgi?id=1290586 But, that bug was just closed due to Fedora 24 EOL, so I'm not sure if it'll get a response.

[ndorf]

Earlier in that ticket, I was pointed at this git commit in Gnome, apparently to support the new screen size property: https://git.gnome.org/browse/mutter/commit/?id=957513242c26be458be7a101b83180e3f59f6a44

Just in case that helps to replicate that functionality in Mate.

[pdemilly]

Problem still exists in Linux Mint Mate 19. Running it inside qemu using spice-vdagent and QXL driver doesn't allow to resize the spice windows. However It works fine with Cinnamon but not Mate.

[aleixpol]

FWIW, I've been chasing this issue as well, we have the same issue in Plasma. :/

[gorky]

Still seeing it with 19.1 Mate.

[flexiondotorg]

Tagging @vkareh

[sej7278]

just seen this with debian buster guest (mate 1.20.4) wow that was a waste of half a day!

[thedarb]

Gah, why!