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I recently upgraded from Ubuntu 16.04 LTS to Ubuntu 17.10. I wanted to try out the plasma desktop so I did

sudo add-apt-repository ppa:kubuntu-ppa/backports

sudo apt-get install kubuntu-desktop

and selected lightdm. I tried it out for about a day and then wanted to remove it. I have done

sudo apt-get purge kubuntu-desktop

sudo apt-get purge kubuntu-*

sudo apt-get purge plasma-desktop

sudo apt-get purge plasma-*

sudo apt-get autoremove

all multiple times and in different orders and every time now it lists a bunch of packages and says "not installed, so not removed."

My problem is that (1) the lock screen is no longer the new gnome one that came with the 17.01 upgrade, (2) it still says kubuntu on reboot and startup, and (3) my trackpad scrolling is now inverted with no way of changing this. I will be more than happy to backup my files and do a fresh install of ubuntu after my finals but I just want to know if there is anything else I should try / should have done.

tgohg15243
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    your issue 1 can be fixed with dpkg-reconfigure gdm (16.04 used lightdm; 17.10 uses gnome's dm; I guess you're using whatever kubuntu used). issues 2 is just the plymouth [graphic] which shows on startup/shutdown; pick another like your original ubuntu... (refer https://wiki.ubuntu.com/Plymouth or https://askubuntu.com/questions/2007/how-do-i-change-the-plymouth-bootscreen). sorry I can't help with issue 3 sorry. – guiverc Dec 05 '17 at 02:54

1 Answers1

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use tasksel to remove kubuntu-desktop and KDE then use tasksel to install your favourite desktop. Install tasksel using sudo apt install tasksel if not already installed.

Rajat Pandita
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  • I did this. Kubuntu desktop was not checked off. I tried installing Vanilla GNOME and got "E: Unable to correct problems, you have held broken packages." – tgohg15243 Dec 05 '17 at 04:13