KDE Plasma – SDDM – Disable on-screen keyboard at login
To disable the on-screen keyboard displayed by the SDDM display manager in KDE Plasma on Debian/Kubuntu/etc after installing SDDM themes,
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Error when updating apt packages: “The following signatures were invalid: BADSIG …”
A BADSIG error can occur when a repo’s signing key is changed and conflicts with the one you have cached, or your package lists have become corrupted, among other reasons; in short, the key that’s cached in your lists doesn’t match the release info for one reason or another.
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