Furthemore, these log entries seem to be courtesy of the session init itself (so, the output of upstart) and running init with -q does not suppress the messages. So yeah, this is an upstart bug after all.
** Package changed: ubuntu-touch-session (Ubuntu) => upstart (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1201865 Title: upstart on nexus4 is frequently writing :sys:power_supply-device- changed event messages To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/upstart/+bug/1201865/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs