Re: KDE4 - wrong root password?

[Gary Dale <garydale@rogers.com>]

On 14/03/13 04:57 PM, Hans-J. Ullrich wrote:
> Hi folks,
>
> since some time I discovered a strange behaviour. Whenever I want to kill a
> process, or need root privileges (i.e. with kdesu) and I need to enter my root
> password, this is not accepted.
>
> But - when I use the password of the user I am working with in this cases, it
> will work. This is very strange! The normal user can do things, that root
> cannot do (only in KDE).
>
> I admit, it might be a setting problem in KDE, but I cannot remember, to
> configure or change anything related to this behavior.
>
> Can someone give me a clue, what I can check, to get back to normal behavior?
>
> This problem appears only on my amd64-machine, my other two machines are
> working fine.
>
>
> Thank you very much.
>
> Regards
>
> Hans

Sounds like root may be disabled and you are using sudo to execute those 
commands. This is a normal method for running Linux these days. To 
re-enable root, open a terminal and try:

sudo bash    (to get to a root prompt)
passwd root
exit

Then try to su into root.