I am trying to debug this, this did not use to happen in the past. I do not remember doing anything recently in terms of changes but there have been lots of updates since I last tested this.
My use case is that I have autoreboot set on so that on power failure the system reboots, I did not have autologon set. So it would autoreboot, log in screen would should and then at some period after that if I did not log in the computer would turn off, suspend or whatever (I do not know how to tell the difference).
I have been looking at
* dmesg
* last -x
But nothing obvious is there.
I have been changing settings in dconf and in settings app to try to find anything that could be doing this but nothing is working so far. Testing is *expensive* (wait X minutes after a reboot) so this is not fun.
I will try to work around by setting autologin to ON for now.
I will be away so this is pretty annoying is some setting bug has krept in over the last few years.
I don't think I have updated the firmward recently, so I *do not suspect* hardward is closing things down and it seems to be dependent on Ubuntu state (only for log in screen, not happening when logged in).
This is a DESKTOP.
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