In my case uri from lpstat and used by hp-scan are identical ( /usb/HP_LaserJet_MFP_M28-M31?serial=VNC3B92743 )
lpstat -v :
matériel pour HP-LaserJet-MFP-M28-M31-2 : hp:/usb/HP_LaserJet_MFP_M28-M31?serial=VNC3B92743
hp-scan
HP Linux Imaging and Printing System (ver. 3.18.6)
Scan Utility ver. 2.2
Copyright (c) 2001-15 HP Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.
warning: No destinations specified. Adding 'file' destination by default.
using device hpaio:/usb/HP_LaserJet_MFP_M28-M31?serial=VNC3B92743
I am not sure to undersatnd the problem by reading https:/ /bugs.launchpad .net/hplip/ +bug/1817214
In my case uri from lpstat and used by hp-scan are identical ( /usb/HP_ LaserJet_ MFP_M28- M31?serial= VNC3B92743 )
lpstat -v : MFP-M28- M31-2 : hp:/usb/ HP_LaserJet_ MFP_M28- M31?serial= VNC3B92743
matériel pour HP-LaserJet-
hp-scan usb/HP_ LaserJet_ MFP_M28- M31?serial= VNC3B92743
HP Linux Imaging and Printing System (ver. 3.18.6)
Scan Utility ver. 2.2
Copyright (c) 2001-15 HP Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.
warning: No destinations specified. Adding 'file' destination by default.
using device hpaio:/