Vulkan API

I have recently been told about this repository which helps to add Vulkan support to your Ubuntu installed.  I must say I don't know how much difference it make to my install, but I guess it also does no harm.

https://github.com/lutris/lutris/wiki/Installing-drivers

Getting Skype

Skype can be setup and update periodically by including the

deb http://download.skype.com/linux/repos/debian/ stable non-free

in the sources.list