A new version of Web Launcher, 1.3.x, is out now with the following major improvements:
- support for Lubuntu 18.04
- Wake-on-LAN capabilities to wake up Viewers from sleep (or even better manage Viewers which don't support WOL)
- improved auto-discovery of viewers, especially for the mouse
- support for automatically switching audio to an HDMI output
For more information, see the Web Launcher page or view the code directly: