I've had persistent problems with a 5 minute hang at shutdown for the last three versions of Kubuntu (13.04, 13.10, and now 14.04). I suspect this is not a KDE-specific problem. Recently, I performed a fresh installation of Kubuntu 14.04 from a live-USB, and shutdown worked normally for about a week. The hang-up is now happening again, and I can't figure out why.
In Gentoo, How do I allow normal users to shutdown/reboot?
I try to shutdown as my user el but get this response:
el@voyager ~ $ shutdown now
shutdown: you must be root to do that!
Usage: shutdown [-akrhPHfFnc] [-t sec] time [warning message]
-a: use /etc/shutdown.allow
-k: don't really shutdown, only warn.
-r: reboot after shutdown.
Background: I am Windows user. I recently started using Lubuntu 14.04 along with Windows on my machine.
Problem: I am unable to go to main GUI after login (before that I was able to login and use Lubuntu GUI with same login and password). The system just freezes (but mouse pointer moves) and only wallpaper is shown. I have to forcefully(hard) shutdown the system.