I see the same behaviour, and also have no ~/.cache/upstart/indicator- power.log -- the last one (.1.gz) is from before I upgraded to 15.10.
Also noticed that killing the indicator-power-service process causes it to get started again, and then the icon shows up -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1507837 Title: Battery indicator not showing up in system tray at startup To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/indicator-power/+bug/1507837/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs