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I have Kubuntu 18.04 installed and have changed "sudo" to superuser and normal user.
But sometimes, when system settings like SDDM background is changed, I have type in the password of normal user (but not superuser).
Instead of this, this it should be superuser password.
I have Kubuntu 18.04 installed and have changed "sudo" to superuser and normal user.
Exactly how did you do this? You might start by reading the Ubuntu documentation on rootsudo to see how it is handles on the various Ubuntu distributions.
What I have done:
1. sudo passwd root -> now I have root and normal user
2. But now I have the problem, that some system tasks only need the password of the normal user
By default, I imagine that applications that need root privileges will ask you for your user password, unless you very specifically become root before running the relevant application. That's how Ubuntu does things.
Is there any reason that you have decided to "activate" root itself?
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