title: x2go issue with XFCE and Ubuntu 20.04
body: <p>When I connect x2go with XFCE Ubuntu 20.04 (KVM VM) after ~10 minutes of idle time, x2go will lose its mouse focus and keyboard focus and there is no way to grab control of the session. Even restarting x2go will not bring the focus back.</p>
  <p>The XFCE VM is still running because I can see the top output in the console.</p>
  <p>I tried several key combinations to bring the focus back but it does not. I tried LXDE and it does not have this issue. I tried XFCE desktop 20.04 on its running in a KVM VM. I also tried installing Ubuntu server 20.04 and load Xubuntu-desktop (KVM VM) - the same issue. After ~10 minutes the x2go session-focus is lost.</p>
  <p>What brings the session focus back is if I reboot the VM and then connect to the VM again using x2go. as I mentioned just restarting x2go will not bring the session focus back.</p>
  <p>I tried uninstalling the screensaver and the power management features in XFCE but that did not fix this issue.</p>