How can I switch from Kubuntu 18.04 to Ubuntu 18.04?

Solution 1:

Based on the information you've provided, it looks like apt is refusing to continue with the installation because it is detecting conflicting packages.

The main possibilities that come to mind are:

• There are PPAs or non-standard repositories installed. If so, remove them.

• There are manually downloaded and installed deb files. If so, remove them.

• Recommended packages are being treated as dependencies. If so, turn the setting off. (The easiest way is from within synaptic or perhaps software-properties-kde.)

Further recommendations:

• Use aptitude (instead of apt or apt-get) because it has a built-in dependency resolver that will suggest potential solutions that will allow the installation to continue.

• If you just want to try different desktop environments, try the live discs first to avoid destabilizing your current system. Then if you like them, install just the associated packages (such as, gnome or xfce4), rather than ubuntu-desktop.