On Mon 22 Feb 2021 at 22:17:52 +0100, alain wrote: > Package: hplip > Version: 3.21.2+dfsg1-1 > Followup-For: Bug #983349 > X-Debbugs-Cc: compte.perso.de-al...@bbox.fr > > your command : simple-scan escl:http://127.0.0.1:60000 was nearly ok . > > simple-scan started to connect and , quickly , closed itself : "cannot > connect"
That is a possible upstream bug in SANE for this device. > i've read your texts . > > the only thing i understood is that usb connections has become now like > network > connections > > alain@sid:~$ lsusb -v | grep -A 3 bInterfaceClass.*7 > Couldn't open device, some information will be missing > Couldn't open device, some information will be missing > Couldn't open device, some information will be missing > bInterfaceClass 7 Printer > bInterfaceSubClass 1 Printer > bInterfaceProtocol 4 > iInterface 0 > -- > bInterfaceClass 7 Printer > bInterfaceSubClass 1 Printer > bInterfaceProtocol 2 Bidirectional > iInterface 0 > -- > bInterfaceClass 7 Printer > bInterfaceSubClass 1 Printer > bInterfaceProtocol 4 > iInterface 0 > can't get debug descriptor: Resource temporarily unavailable > Couldn't open device, some information will be missing > -- > bInterfaceClass 7 Printer > bInterfaceSubClass 1 Printer > bInterfaceProtocol 4 > iInterface 0 > Couldn't open device, some information will be missing > Couldn't open device, some information will be missing > Couldn't open device, some information will be missing > Couldn't open device, some information will be missing > Couldn't open device, some information will be missing > Couldn't open device, some information will be missing > > new ipp-over-usb seems to be not compatible with libsane-hpaio (my driver) ipp-usb has taken control of the USB endpoints detailed above and libsane-hpaio is unable to access them. This is a consquence of how IPP-over-USB interworks with USB. It is not a bug in either ipp-usb or libsane-hpaio. > so i have a big problem . > > don't know the solution . Please install sane-airscan and give scanimage -L Cheers, Brian.