Signature from " " is uknown trusted

[dalto]

It is because you added a 3rd party repo named DEB_Arch_Extra which is signed by a key that isn’t on your keychain.

You either need to remove the repo or add the key to your keyring manually.

If you want to add the keys, the instructions are here:
https://wiki.archlinux.org/title/Pacman/Package_signing#Adding_unofficial_keys

Since you seem to be using multiple 3rd party repos you might also read this:

[FAQ] The dangers of using 3rd party repos

This is something I wrote last year and posted somewhere else. I thought it was worth sharing here as I see a lot of people using 3rd party repos. There are often discussions about the dangers of using AUR but it seems like there a lot less focus is on the dangers of using 3rd party repos. In general, using a 3rd party repo is much more dangerous than using AUR. With an AUR package, everything is fully transparent and the package is built on your machines. A quick look at the PKGBUILD file wi…