After being for about 30 seconds inactive at the login screen, my machine suspends to RAM. I can resume resume the session and login without further issues.
Also, the power management options reboot and restart are resulting in suspended (STR) session. Not quite sure if they are related.
I am using the latest MATE 16.04 LTS version on an older Samsung laptop (Samsung X20 XVM 1730 V). I have been reading about the forcepae option, but I am not convinced that this is the issue.
Any comment is very much appreciated.