Hi AG-Ubrio, the profile that you should check is not the lightdm one, but this:
/var/lib/snapd/apparmor/profiles/snap.firefox.firefox It doesn't matter much, though, since this also has the rule /tmp/** mrwlkix, Can you please check in the logs, if you get some apparmor denials when running firefox? You could run the command journalctl -f -t audit then start firefox, and paste here the output from the first command. Also, if you say that the directory is created, it would be interesting to know what are its permissions. -- You received this bug notification because you are a member of Ubuntu Touch seeded 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/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp