If you are having a black screen when using Drovio on Linux, here is how to fix it.

What to do if there is a black screen when the session's Host is sharing the screen?

If only the guests are getting a black screen

As the session's host you need to make sure that you are running your desktop environment under X.org and not under Wayland since we are currently supporting only X.org-based desktops.
For a complete guide to switch from Wayland to X.org, please check this article.

If both, the session's host and the guests are getting a black screen

This means that the host's desktop environment does not support transparency. Since our application is using on-screen overlays, a compositor is necessary in order to render transparency and prevent the black screen.
To solve the issue the host needs to install and run the compositor manually, for example, if the host is using i3 (window manager), they will need to apt install picom and run picom&.
The 3 main free compositors are: Compton, Picom and Xcompmgr.
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