The notification like “Language support is incomplete, additional packages are required” means that not all the language packages installed all upgraded, to fix this you need to execute next command……
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sudo apt install $(check-language-support -l en) |
here “en” is a language code, so if you need additionally support for example for Italian language you need to run it once again, like this
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sudo apt install $(check-language-support -l it) |
If this notification annoying you and you don’t want to install anything, you can just disable it in
Go to System Settings > Personalization > Other Notifications and uncheck Incomplete language Support
