Can't login to my profile when booting Ubuntu. What to do?

Question

ubuntu

When booting Ubuntu 14.04, a problem occurs:
on the user selection screen after entering the password, instead of loading the desktop, only a black screen appears and the inscription

laptop mode enabled, not active [unchanged]

After that, the user selection screen is loaded again.
Tried to turn on - turn off the laptop charging, tried without a battery (I read on the net that this is the charging status, sort of like)
Nothing helps
The guest user enters without problems (now I am writing from under it)
HP probook 470 g1 laptop
Nothing about mine I couldn't find the problem on the internet.
What to do?
UPD : I found the problem myself - Cinnamon was shy. Under Unity, he enters the profile. But now I don’t know how to fix Cinnamon, the update didn’t help

Answer 1

The reason is banal and common: during the next update, something broke, after a week it was fixed during the update.
I didn’t find anything on the Internet on this issue, I didn’t look for ubunts in the bugrteker

Answer 2

dpkg-reconfigure "cinn..."