Bug#1008997: [OpenPrinting/ipp-usb] ipp-usb is not ready for this device (Issue #48)

[alain <compte.perso.de-alain@bbox.fr>]

hi , Till Kampeter

my case is only with the 0.9.20-1 ipp-usb version for testing / sid  only .

the stable version i put instead works perfectly .

waiting for your advices and your debugging .

(if you want)

thanks ,

friendly ,

respectfully,

alain.

Le 24/04/2022 à 10:51, Till Kamppeter a écrit :

@BELLECalain do all versions of ipp-usb not work with kernel 5.17? Or is it only the new 0.9.20 version?

Thanks, @tangyanli USB printing (7/1/x) has currently 4 different protocols: x = 1 is mon-directional streaming, x = 2 is bi-directional streaming, x = 3 is IEEE-1284 packaet format (AFAIK only used by HPLIP currently), x = 4 is IPP-over-USB.

IPP-over-USB devices (7/1/4) ALWAYS print and scan driverless. For printing this means at least one of AirPrint, IPP Everywhere, Mopria, or Wi-Fi Direct Print is supported (or at least IPP 2.0 plus understanding at least one page description language of PDF, Apple Raster/URF, PWG Raster, PCLm), for scanning this means to understand at least one of eSCL and WSD/WS Scan.

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