The comment in <a href="https://bugs.launchpad.net/ubuntu/+source/xfce4-power-manager/+bug/1303736/comments/56">#56</a> worked for me too, although I've still got the <a href="https://bugs.launchpad.net/ubuntu/+source/xfce4-power-manager/+bug/1319598">Power manager no longer suspends 'power manager not authorised</a> bug to contend with?!?
The comment in <a href="https:/ /bugs.launchpad .net/ubuntu/ +source/ xfce4-power- manager/ +bug/1303736/ comments/ 56">#56</a> worked for me too, although I've still got the <a href="https:/ /bugs.launchpad .net/ubuntu/ +source/ xfce4-power- manager/ +bug/1319598">Power manager no longer suspends 'power manager not authorised</a> bug to contend with?!?