Hi;
All I used the flatpak install to get gimp 2.10 and then remove gimp 2.8 from synaptic.
I got the guide from here :
https://itsfoss.com/gimp-2-10-release/Installing GIMP 2.10 with Flatpak in Ubuntu-based Linux distributions
You need to enable Flatpak support first. Use the commands below to install Flatpak in Ubuntu.
sudo add-apt-repository ppa:alexlarsson/flatpak
sudo apt update
sudo apt install flatpak
You can refer to this page to know how to enable Flatpak support in other Linux distributions.
Once you have Fltapak support, use the command below to install GIMP 2.10:
flatpak install
https://flathub.org/repo/appstream/org.gimp.GIMP.flatpakrefOnce installed, if you don’t see it in the menu, you can run it using the command below:
flatpak run org.gimp.GIMP