[cups-devel] IPP Everywhere tray detection and selection issues

[Michael Sweet]

Stephan,

Thanks, I've added this and your follow up comments to:

    https://github.com/apple/cups/issues/4893 <https://github.com/apple/cups/issues/4893>

We'll try to get this fixed in the next 2.2.x update in November.

> On Oct 7, 2016, at 3:30 AM, Stephan <stephanwib at googlemail.com> wrote:
> 
> Hi!
> 
> I found another issue regarding IPP discovery and input trays. These
> are my printers:
> 
> # ipptool ipp://10.70.235.31/ getattr.test
> ipp-versions-supported printer-name media-source-supported
> ---------------------- ------------ -------------------------------------
> 1.0,1.1,2.0            Lexmark C748 auto,tray-1,alternate,manual,envelope
> 
> # ipptool ipp://10.70.235.32/ getattr.test
> ipp-versions-supported printer-name media-source-supported
> ---------------------- ------------ ----------------------
> 1.0,1.1,2.0            NPIB80216    auto,tray-2,tray-1
> (HP LaserJet 500 color m551)
> 
> 
> I found that trays named tray-* were not included in the resulting PPD
> and thus not selectable for the printer object. I suspect that is
> because the tray descriptions are wrong in ppd-cache.c.
> 
>    static const char * const sources[][2] =
>    ...
>      { "Tray1", "Tray 1" },
>      { "Tray2", "Tray 2" },
>      { "Tray3", "Tray 3" },
> 
> I changed these as below, according to
> https://ftp.pwg.org/pub/pwg/candidates/cs-ippjobprinterext3v10-20120727-5100.13.pdf
> Table 14:
> 
>      { "Tray-1", "Tray 1" },
>      { "Tray-2", "Tray 2" },
>      { "Tray-3", "Tray 3" },
>      ...
> 
> The trays now appear in the PPD and are also selectable:
> 
> *OrderDependency: 10 AnySetup *InputSlot
> *DefaultInputSlot: Auto
> *InputSlot Auto/Automatic: "<</MediaPosition 0>>setpagedevice"
> *InputSlot Tray-2/Tray 2: "<</MediaPosition 21>>setpagedevice"
> *InputSlot Tray-1/Tray 1: "<</MediaPosition 20>>setpagedevice"
> *CloseUI: *InputSlot
> 
> However, when a print job is submitted to the printer, the
> media-source job attribute is never sent, leaving tray selection not
> working. The option is passed to the IPP backend, but is omitted by it
> for some reason.
> 
> D [07/Oct/2016:07:01:42 +0000] [Job 297] argv[5]="colormodel=rgb
> Duplex=none finishings=3 inputslot=tray-1 number-up=1 PageSiz
> e=a4 job-uuid=urn:uuid:ecf5c718-230b-38ac-7e1e-119f1a5370f2
> job-originating-host-name=localhost date-time-at-creation= date-ti
> me-at-processing= time-at-creation=1475823702
> time-at-processing=1475823702 document-name-supplied=testfile.pdf"
> 
> -Am I correct as for the tray descriptions in ppd-cache.c?
> 
> -What is the reason for the IPP backend not sending the media-source
> job attribute?
> 
> 
> Regards,
> 
> Stephan
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_________________________________________________________
Michael Sweet, Senior Printing System Engineer