This week, in our Linux Page (in Spanish) we posted some tips about repairing a bad Linux upgrade.  In fact, it is rare but sometimes, unfortunately, it happens. I mean one or more error during an upgrade installation on Ubuntu. In my case the problem was caused by a blackout and a battery which did not worked properly. When I restarted the PC it worked only in text mode and it asked me the login and the password to enter into the Ubuntu root mode. Obviously, as usual, I typed the requested data and then, after reading how to solve similar problems on internet, I decided to go forward with sudo apt-get update. At this point Ubuntu advised me that something had been wrong during the last update and suggested to try with sudo dpkg –configure -a.  I followed the suggestions and I concluded the “repair session” with  sudo apt-get upgrade –fix-broken. Fifteen minutes later and after rebooting all the “bad upgrade” problems were solved. Recommended!