I installed the whole Ubuntu Mate. Everything went well. I gave total liberty so the installer could do whatever it wanted on the disks just asked form encryption (as the laptop will be traveling frequently with me).
Then, I regret my decision: The boot process halts on the first screen and stands there. I just press escape and there is a prompt for my crypto password. Then I am asked a second time on this boot. But that is not nice, but ok.
The problem is that under the initial system update, I saw a package asking for the password too. While I was installing Docker, It just hanged for ages. I suppose due to the same problem, but the App Central don’t have a terminal screen to follow the installation process.
There is something to be done to help me with this problem?