This happened consistently, after every reboot. I couldn't identify an event that cause it, even happened if I haven't log in.
In the beginning everything seems fine, and I still have commands like ls and ps, but after a few minutes pass Ubuntu starts to crash. First Gnome looses icon layouts and I can't access ls and ps, because Ubuntu can't find the executables. Then I got to the login screen and I can't login with the message: authentication error.
Then I got to a screen where these messages loops forever(at least for 10 minutes it does, after that I turned off the machine with the power button)
I have a Lenovo ThinkPad L590 with CPU: intel core i7-8565u 1.8 Ghz Mem: Samsung ddr4 16 GB Storage: Intel SSDPEKKF512G8L
I already tried the in-built hardware diagnostics, except the extended memory check(I will do that this night but it estimated it to run for 6 hours, so I thought first I should check other things). From the run tests everything passed.
What can cause this issue?