Skype on Ubuntu 18.04 issues - doesn't start and logs me out

Solution 1:

You probably aren't using the latest version of Skype. Try installing the Skype snap package with:

sudo snap install skype --classic 

If that doesn't work try installing the latest version of Skype from the insider channel.

sudo snap install skype --classic --channel insider/stable

Solution 2:

This is a known issue with XWayland on Ubuntu 18.04.

It will be fixed with a future HWE update (packages linux-generic-hwe-18.04, xserver-xorg-hwe-18.04, xwayland-hwe-18.04). But it remains unclear when this will actually happen.