Jo > * What exactly did you do (or not do) that was effective (or > ineffective)? Tried to install a .deb by double clicking on it in Dolphin > * What was the outcome of this action? Nothing happens
With an existing XXX.deb (one that you wanted to open), what does (on the command line) xdg-mime query filetype XXX.deb say? In my case it is application/vnd.debian.binary-package After that, what does xdg-mime query default $(xdg-mime query filetype XXX.deb) say? In my case it is org.kde.discover.desktop This is a problem of mime type associations, and this is - honestly spoken - completely broken in Debian at the moment. THere is work going on but I am not sure how far this has proceeded. Best Norbert -- PREINING Norbert https://www.preining.info Fujitsu Research + IFMGA Guide + TU Wien + TeX Live + Debian Dev GPG: 0x860CDC13 fp: F7D8 A928 26E3 16A1 9FA0 ACF0 6CAC A448 860C DC13