Bastien Nocera authored Apr 17, 2018 and Jonas Ådahl committed Jul 18, 2018

Monitor whether UPower is running ourselves. That allows us to keep the
same value for "lid-is-closed" throughout the process of UPower
restarting, preventing unwanted monitor re-configuration through the process.

Fixes another screen black out when UPower restarts and the laptop lid
is closed.