- install virt-viewer Windows installer - can be downloaded from virt-manager download page
- download spice-guest-tools from here
- install spice-vdagent on linux vm
sudo apt install spice-vdagent
- start spice-vdagent (check if spice-vdagentd sevice started aswell)
sudo systemctl start spice-vdagent
- enable SPICE in vm settings Hardware -> Display section
sudo lvresize -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv
sudo resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv