This has been the case since day 1 of Unity on the desktop. See bug #1307618. Not sure why we never added unity8 to that bug, so let's dupe that bug to this one.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unity8 in Ubuntu. https://bugs.launchpad.net/bugs/1644237 Title: unity8 fails to start as guest user Status in lightdm package in Ubuntu: Confirmed Status in unity8 package in Ubuntu: Incomplete Status in unity8-desktop-session package in Ubuntu: Confirmed Bug description: This is shown in unity8.log: [2016-11-23 15:59:25.820868] mirserver: Starting ERROR: /build/mir-JY573_/mir-0.24.1+16.10.20160928/src/server/graphics/default_configuration.cpp(132): Throw in function mir::DefaultServerConfiguration::the_graphics_platform()::<lambda()> Dynamic exception type: boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<std::runtime_error> > std::exception::what: Exception while creating graphics platform ERROR: /build/mir-JY573_/mir-0.24.1+16.10.20160928/src/server/graphics/nested/mir_client_host_connection.cpp(245): Throw in function mir::graphics::nested::MirClientHostConnection::MirClientHostConnection(const string&, const string&, const std::shared_ptr<mir::shell::HostLifecycleEventListener>&) Dynamic exception type: boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<std::runtime_error> > std::exception::what: Nested Mir Platform Connection Error: Failed to connect to server socket: Permission denied [2016-11-23:15:59:35.820] ERROR: QMirServer - Mir failed to start initctl: No such variable: UNITY_MIR_SOCKET running current zesty, but I had the same problem on yakkety too. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1644237/+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
