Anyone else find their tablet turns itself off occasionally if it's not connected to the charger for a few hours, especially overnight? I sometimes pick mine up and it's off, but when I boot it there's plenty of charge left. It's also a bit unwilling to come on, and connecting it to a charger seems to help.
Just saw this... were you at/near around 50% battery percentage?
[nemo@Jolla ~]$ vi /var/log/systemboot.log 20160302_005749 Received: dsme internal state USER 20160305_113717 Startup: androidboot.mode=main 20160305_113717 Received: dsme internal state USER