Comment 7 for bug 1355892

OK, so current investigation results indicate that this is probably an issue (race?) in our start-up scripts. The start-up wizard should be setting MIR_SOCKET=/run/user/32011/wizard_socket in the upstart environment [1], and restoring the previous value when shutting down [2].

However it seems that occasionally something goes wrong at the cleanup phase and the environment variable is not restored, or unity8 manages to start before the cleanup phase is performed.

[1] https://bazaar.launchpad.net/~system-settings-touch/ubuntu-system-settings/rtm-14.09/view/head:/wizard/ubuntu-system-settings-wizard.conf
[2] https://bazaar.launchpad.net/~system-settings-touch/ubuntu-system-settings/rtm-14.09/view/head:/wizard/ubuntu-system-settings-wizard-cleanup.conf