Now I've installed the Cinnamon desktop. When logging in I get a notification that we're running in software rendering mode. qxl is loaded. Resizing works:
spice-vdagent[2858]: 0x56310d707dc0 connected to /var/run/spice-vdagentd/spice-vdagent-sock spice-vdagent[2858]: Selection window: 18874369 spice-vdagent[2858]: Screen 0 1456x857+0+0 spice-vdagent[2858]: 0x56310d707dc0 sent guest xorg resolution, arg1: 1456, arg2: 857, size 16 spice-vdagent[2858]: net_wm_name: "Mutter (Muffin)", has icons: 0 spice-vdagent[2858]: 0x56310d707dc0 received version, arg1: 0, arg2: 0, size 7 spice-vdagent[2858]: 0x56310d707dc0 received client disconnected, arg1: 0, arg2: 0, size 0 spice-vdagent[2858]: Root size of screen 0 changed to 1480x872 send 1 spice-vdagent[2858]: Screen 0 1480x872+0+0 spice-vdagent[2858]: 0x56310d707dc0 sent guest xorg resolution, arg1: 1480, arg2: 872, size 16
