After upgrading my laptop from Ubuntu 20.04 LTS to 21.10 using the command # update-manager -c it appears that my OS thinks it is still in 20.04. Now it tells me that it can do the update to Ubuntu 21.10 which I've previously done. I'm already on that version. If I do the update, I get a fail message but no explanation.
content of etc/lsb-release file:
picture of the content of etc/lsb-release file
content of etc/os-release file:
picture of the content of etc/os-release file
The content of usr/lib/os-release file is the same as this one.
It's the about section of Ubuntu settings. As we can see, GNOME updates well but the OS name is still in 20.04.
picture of version content in about from settings
If someone has an idea to fix this, I would really appreciate it.
