Here is a summary how to install Lubuntu on Raspberry Pi:
(Tested on Raspberry Pi 5, 8 Mb)
Install Ubuntu Server 24.04 via Pi Imager
- maintain user data, wifi, etc. in advanced options
Now it also makes sense to increase the partition size of the data partition to make use of the full size of the sd card.
Start Pi and Log In
Update System
- sudo apt update
- sudo apt upgrade
Disable Cloud Init
- sudo dpkg-reconfigure cloud-init
- Disable all services (uncheck everything except “None”)
Restart the computer
- sudo reboot
Install Lubuntu
- sudo apt install lubuntu-desktop
- sudo reboot
Boot seems to be stuck, display manager is not starting
Switch to console 2
- ALT-F2
- login
Enable the display manager
- sudo systemctl set-default graphical.target
- sudo reboot
Activate SDDM in Lubuntu
- sudo dpkg-reconfigure sddm
X11 not running, there must have been graphics compatibility issues
- sudo apt install xserver-xorg-video-fbdev
create the following file (or dir if needed), and add the following lines
- sudo nano /etc/X11/xorg.conf.d/99-fbdev.conf
Section “Device”
Identifier “Raspberry Pi FBDEV”
Driver “fbdev”
Option “fbdev” “/dev/fb0”
EndSection
Restart SDDM
- sudo systemctl restart sddm
This instruction works for 24.04. For 24.10 it is also working but there is currently an issue with the lxqt-config-session module which will not open. This prevents the user from beeing able to edit the session settings, e.g. change window manager or autostart in GUI.