To use Vidyo on a PSB in-room computer, start Firefox and go to https://vidyowebrtc.cern.ch/web/index.html, use portal: https://vidyoportal.cern.ch and login with your CERN account.
Vidyo has stopped releasing new Vidyo Desktop desktop clients for Linux, so as of February 14, 2018, CERN no longer supports Linux desktop client apps. The Vidyo desktop client NO LONGER works on the in-room linux computer in PSB301, and is likely to stop working on the in-room linux computers in PSB308 and PSB470. For more details, see http://information-technology.web.cern.ch/services/fe/howto/users-use-vidyo-linux