Looks to be a potential regression in Xmir due to the backtrace in the Firefox log. Adding that package to the bug.
** Also affects: xorg-server (Ubuntu) Importance: Undecided Status: New ** Tags added: xmir -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1603904 Title: libertine apps don't work anymore To manage notifications about this bug go to: https://bugs.launchpad.net/libertine/+bug/1603904/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp