Found that 'shutdown -h now' makes it restart. 'halt' seems the best way to avoid a 'hot' power off
This command works really well with 'Awesome miner', I've setup an 'Action' button that allows me to shutdown all the miners
without switching them off when hot. I think this might extend the life of the chips as they won't get so hot.
https://i.imgur.com/esjbZbF.pnghttps://i.imgur.com/kiI7L03.png