Problem

When you install Microsoft Teams on Linux Ubunut 22.04, screen/desktop sharing doesn't work (v1.5.00.10453)
When you open the sharing tray on the native or the web-client of MS teams, its empty as shown below.

Cause

The origin of this problem is that Linux Ubuntu 22.04 uses Wayland as main communication protocol between a display server and its clients. And the Elektron version that Teams is currently using doesn't support Wayland as it should.

Solution

Source

Solving the screen sharing issue is easily resolved by just disabling Wayland in your display manager

Assuming GDM3 is your default display manager, editing the config can disable Wayland

 sudoedit /etc/gdm3/custom.conf

Uncomment #WaylandEnable=false and save your changes

Restart your device or restart GDM3

 bash
sudo systemctl restart gdm3

After restart, this should resolve the issues with MS Teams screen sharing