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How do I install KDE and retain LightDM as a login manager?

I upgraded my KDE desktop and suddenly it overrode many parts of unity user interface such as menus, icons, and specifically (in this question) lightDM login screen.

here is a screenshot of menus: enter image description here

how should i fix this?

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marked as duplicate by gertvdijk, Stephen Myall, Eric Carvalho, Eliah Kagan, hhlp Jan 22 '13 at 10:36

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

1  
Also see: askubuntu.com/q/225600/44179 –  Seth Jan 21 '13 at 21:07
    
@gertvdijk no, it's not duplicate, my os did not switch to KDM, i had kdm and lightDM but both looked the same. ( Not exactly the same but they were KDE-styled! i hope i could say clearly what i mean) –  MJafar Mash Jan 22 '13 at 8:30
    
@EBi Okay, that makes it clear. Removed my comment. Does this help you out? –  gertvdijk Jan 22 '13 at 8:52

1 Answer 1

I accidently solved one part of one of my questions.

To fix login screen problem (lightDM): At first it may not be overridden and just switched to kdm. Enter this command in terminal:

sudo dpkg-reconfigure lightdm

Hit enter to enter the menu. Select light-dm or gdm instead of kdm and hit enter again. logout or reboot to see if it's fixed.

If the problem persists it means that kde changed the theme of lightdm. Enter this command in terminal: sudo gedit /etc/lightdm/lightdm.conf and change/add these lines:

greeter-session=unity-greeter
user-session=ubuntu

save the file, sudo reboot, enjoy!

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(About revision history): Not all questions get answers instantly, you have to wait sometimes. –  Seth Jan 21 '13 at 21:13
1  
I read about this in the chat room and don't follow what's going on here. Why is EBi providing an answer here to a question asked elsewhere? –  user25656 Jan 22 '13 at 7:57
    
I also don't see how this answers the question here. EBi clearly states to have an issue with application in Unity and that his issue is not about a login screen problem. –  gertvdijk Jan 22 '13 at 8:58

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