Marc Cayuela's questions

I have a fresh installation of Kubuntu 16.04.1 (kernel 4.13.0-32-generic). The home folder is encrypted (installation option).

The OS keeps asking for the encrypted swap partition password in two cases:

1. On boot, before the log in screen it always asks for the password for cryptswap.
2. On sudo apt-get upgrade see image:

This causes two major usability problems:

1. One I already asked here. Still no answer.
2. The other is that the GUI software center does not automatically detect updates, it does only after I do sudo apt-get update. Also, it "hangs" when updating from GUI (I suspect that it is waiting for the cryptswap password that from the terminal I can write but not in the GUI).

I have a fresh installation of Kubuntu 16.04.1 (kernel 4.13.0-32-generic). The home folder is encrypted (installation option).

My computer shuts down normally if the session is never suspended.

Nonetheless, if Kubuntu was suspended at some point, then the powering off does not work (only if sudo poweroff -f is used). If powered off from the GUI the system seems to log off (log in screen appears).

If I do sudo poweroff then I get:

Failed to start poweroff.target: Transaction is destructive.
See system logs and 'systemctl status poweroff.target' for details.

It didn't use to happen on my previous Kubuntu 16.04.1 installation where the home folder was not encrypted.

My guess is that the suspending leaves some "information" behind that the system does not want to erase with the powering off. But it is a guess and I wouldn't know how to fix it.

If I have a file with permissions and ownership like: -rw------- 1 root root, is this file encrypted?

I am asking this because I am wondering how the file is really protected against being read as plain bytes and then reconstructed by some non-root user, or by an attacker.