Le 01/05/2018 à 13:58, Nicolas Kovacs a écrit : > The printer and the scanner worked perfectly for some time. > > Now all of a sudden scanning won't work anymore, and I have an alert > that the HP plugin must be installed. After a couple of unnerving hours I finally found the cause of the malfunction. Our printer has been set as the default printer. Now I recently added a second printer for the teachers room, accessible via wifi only. As soon as this printer has been setup, Simple Scan was looking for this printer's plugin. So my mistake was assuming that defining a printer as a default printer also meant defining it as the default scanner. Apparently there is no default scanner, this has to be selected individually in the scanning applications. Anyway, problem solved. Phew. Niki -- Microlinux - Solutions informatiques durables 7, place de l'église - 30730 Montpezat Site : https://www.microlinux.fr Blog : https://blog.microlinux.fr Mail : info at microlinux.fr Tél. : 04 66 63 10 32