0

I wanted to try out KDE on my Ubuntu. Then I found out I need another system (Kubuntu), but I found a way to install Plasma on regular Ubuntu (apt install kde-standard). I did so, and i succesfully logged in into KDE. At first, there was a problem: no matter which session I choose at the Session dropdown at the login screen, I can't get into GNOME. It worked for a bit, until it logged me out, and I couldn't log in back. I booted into recovery mode, dropped into root prompt, removed kde-standard and booted back. But the KDE login screen is there. And I can log in, but when I do, I get a yellow screen where I can slightly see GNOME. This lasts for a few seconds, then it crashes back to the log in screen. Is there a way to fix that without reinstalling?

neofetch --stdout output (recovery root prompt):

root@Marcel-UBU 
--------------- 
OS: Ubuntu 22.04.2 LTS x86_64 
Host: MS-7D18 2.0 
Kernel: 5.19.0-43-generic 
Uptime: 1 min 
Packages: 2469 (dpkg) 
Shell: bash 5.1.16 
Terminal: root 
CPU: 11th Gen Intel i5-11400 (12) @ 4.400GHz 
GPU: NVIDIA GeForce RTX 3060 Lite Hash Rate 
Memory: 178MiB / 15896MiB
MrArsikk
  • 29

1 Answers1

1

I've fixed this (not 100%):

  1. First, boot selecting these options in GRUB: "Advanced options for Ubuntu" > "Ubuntu with [any kernel] (recovery mode)"
  2. Select "network", enable, then "root", enter
  3. Uninstall the package you used: kde-full, kde-standard, kde-plasma using apt.
  4. Run dpkg-reconfigure sddm, select qdm3 there.
  5. Restart either with resume in the recovery menu or a reboot
  6. The GNOME login screen should greet you. Log in.
  7. If it's been uninstalled, install ubuntu-desktop, then log out and in.
  8. Go to Settings > Appearance, select a color and a light/dark theme so the appearance returns to normal.

What's left:

  • The cursor from the KDE theme you chose before fixing
MrArsikk
  • 29