That was firefox packaged as a deb, right? This issue is specifically with snaps.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/1593407 Title: Guest session cannot run snaps Status in Light Display Manager: Confirmed Status in Snappy: Confirmed Status in Ubuntu MATE: Confirmed Status in Desktop: New Status in firefox package in Ubuntu: Confirmed Status in lightdm package in Ubuntu: Confirmed Status in snapd package in Ubuntu: Confirmed Status in firefox source package in Xenial: Confirmed Status in lightdm source package in Xenial: Confirmed Status in snapd source package in Xenial: Confirmed Bug description: I'm using Ubuntu 16.04. The guest session cannot execute snaps, because of a permission error. The LightDM's guest session AppArmor profile is not allowing access to /snap and other needed files and folders. To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1593407/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp