I just updated my Ubuntu 21.04 (running on Raspberry Pi 4) to 21.10. lsb_release -a shows 21.10 on the command line but the GUI desktop still says 21.04 in the bottom left corner.
What should I do?
>Solution :
As already told by Vanadium, you can change the wallpaper to wallpaper of Ubuntu 21.10.
You can change the wallpaper by:
First, install the lightdm greeter settings:
sudo apt install lightdm-gtk-greeter && sudo apt-get install lightdm-gtk-greeter-settings
Now set the lightdm login screen to lightdm-greeter:
echo [SeatDefaults] > /etc/lightdm/lightdm.conf
echo greeter-session=lightdm-gtk-greeter >> /etc/lightdm/lightdm.conf
Open the lightdm greeter settings app:
sudo lightdm-greeter-settings
old screenshot
From there, you can easily change the image by clicking on the image option.
Example image:
