hi folks !

can't use KDE 5 because if I install sddm can't enter as root !

I know how to deal it with KDM: [

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# sed -ie 's/AllowRootLogin=false/AllowRootLogin=true/' /usr/share/config/kdm/kdmrc

]

the question... HOW TO ALLOW ROOT LOGIN IN sddm

THAT'S ALL FOLKS !

It's simple! You should never login as root.

Running an X session as root is generally considered a rather bad idea as it increases the attack surface on your system tremendously.
Are there any specific reasons why you want to do that?

thx 'pal'(thus b/w qm) ...

What's that have to do with the question?

SDDM maintainer here, eliasp is right you can't log in as root.
It's explicitly banned and we won't add it in the future.

well... ok man... mystery solved!

david_edmundson wrote:SDDM maintainer here, eliasp is right you can't log in as root.
It's explicitly banned and we won't add it in the future.

then... how to startin plasma-next or plasma-desktop virtual console; add

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exec plasma-desktop

to Xinitrc ?

tia!

just:

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startkde

[solved]

I could resolve by MYSELF !!!

david_edmundson wrote:just:

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startkde

NOpe !!!

OK I get the very good reasons for not allowing root desktop login, and generally I support the notion.
However I have had one very good reason for logging in once to a root desktop.

If in 'System Settings' you change, for example, the mouse behaviour to say 'reverse scroll' or 'double click', you also want this behaviour on any desktop apps that you run su, say 'File Manager - Super User Mode'.

It can also be helpful to change the window colours so that it is clear that a particular window is running elevated privileges.

This used to be easily achieved by an initial root desktop login and running 'System Settings' in this desktop. This now not possible

Which begs the question. How can these setting changes now be easily achieved?

timnicholson wrote:OK I get the very good reasons for not allowing root desktop login, and generally I support the notion.
However I have had one very good reason for logging in once to a root desktop.

If in 'System Settings' you change, for example, the mouse behaviour to say 'reverse scroll' or 'double click', you also want this behaviour on any desktop apps that you run su, say 'File Manager - Super User Mode'.

It can also be helpful to change the window colours so that it is clear that a particular window is running elevated privileges.

This used to be easily achieved by an initial root desktop login and running 'System Settings' in this desktop. This now not possible

Which begs the question. How can these setting changes now be easily achieved?

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kdesu systemsettings

timnicholson wrote:OK I get the very good reasons for not allowing root desktop login, and generally I support the notion.
However I have had one very good reason for logging in once to a root desktop.

I just noticed today that it is actually possible to login as root using sddm.

The root user is just not displayed by default. Add this to /etc/sddm.conf and _all_ system users including root are displayed:

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[Users]
MinimumUid=0


That setting is available in the SDDM systemsettings module, but unfortunately changes there aren't saved:
https://bugs.kde.org/show_bug.cgi?id=347942

You can hide specific users with the "HideUser=" option btw.

Another option would be to change to a different theme that has a username text input field, like Circles, Elarun or Maledives. You should be able to login as root then as well.

But as google01103 already wrote, you can run systemsettings as root in your user's session too like always. No need for running the whole desktop as root...
For Plasma5 you'd need to run "kdesu systemsettings5" though.

That will display it, you won't be able to log in though. There are additional security checks.

wolfi323 wrote:But as google01103 already wrote, you can run systemsettings as root in your user's session too like always. No need for running the whole desktop as root...
For Plasma5 you'd need to run "kdesu systemsettings5" though.

I tried

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 xdg-su -c systemsettings5

as that su style matched other menu items, but thought it hadn't worked. But this turned out to be something to do with Dolphin, it didn't show the colour change. However the mouse settings had stuck, as had the colour change on other windows. Thanks for the confirmation.

Now to see why Dolphin isn't taking the change of coiour...