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so I installed lxqt for trying it out and after removing everything back to normal, the only thing that remains is changing this login screen back to default one.

enter image description here

also when I try to power off, I get the message "other users are logged in and it shows my username.

Any help is appreciated.

Mark Kirby
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awestorr
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  • This may help: https://askubuntu.com/a/906691/631600 – pLumo Jun 25 '20 at 19:42
  • I don't recognize your screen, but suspect pLumo & Mark Kirby are correct and it's https://packages.ubuntu.com/focal/sddm-theme-debian-elarun you are looking at (I'm used to Lubuntu's which looks different). It'll depend on how exactly how you installed LXQt (which obviously wasn't via lubuntu-desktop and you didn't specify), but maybe https://packages.ubuntu.com/focal/lxqt which does include said package... – guiverc Jun 26 '20 at 02:33

1 Answers1

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When you installed LxQt it changed the display manager from the default GDM to SDDM, this was likely not uninstalled with the desktop.

Log back in to your desktop and open a terminal, type

sudo service sddm stop

to stop the current display manager, then

sudo dpkg-reconfigure gdm3
sudo service gdm3 start

to set the new (default) one.

Now you will have to reboot for this to take effect.

Mark Kirby
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