Sometimes I see my battery indicator and sometimes I don't. I've attempted every fix in this thread with no results. I might have found the source of the problem, though. When I run
/usr/lib/x86_64-linux-gnu/indicator-power/indicator-power-service
I get the output
Indicator-Power-Message: exiting: service couldn't acquire or lost ownership of busname
I'm running Ubuntu 14.10 on a Macbook Pro 8,3