Bug#983349: hplip: while scanning , error 9 : impossible to scan

[Till Kamppeter]

On 23/02/2021 13:17, Brian Potkin wrote:
escl is capable of working with ipp-usb but does not. This seems to
be a bug in SANE's libsane-escl, so I am reassigning your report to
libsane1.

Note that the "escl" backend got improved a lot in sane-backends 1.0.32 
which got released recently. I have already packaged it for Ubuntu 
Hirsute (21.04).

I think I had this backend already used with IPP-over-USB. If it does 
not actively block IPP-over-USB in newer versions it can still be that 
sane-airscan simply has more quirk exceptions to make IPP-over-USB work 
on more scanner models.

   Till