tray select on HP8720

Add: I was able to change the ppd. I used help from a pod which was provided by a printer shown in the Device Manager.
There the following was given
*InputSlot Upper/Main: "<</MediaPosition 1>>setpagedevice"
*InputSlot Alternate/Alternate: "<</MediaPosition 2>>setpagedevice"
*InputSlot Auto/Auto: "<</MediaPosition 0>>setpagedevice"

Having that the GUI including cups gives the ability to select the tray. But the printer stil used the default tray.

Regards
Lutz-Petrr

Hi,

The tech class of this model supports only main tray. So we should not change the ppd.

Regards,
Srinivas Teja.

This is surprising to me.
The predecessor, HP OfficeJet Pro 8620, has the correct ppd and probably the right tech class.
So I assumed the follower has this feature, too.
I found correct entries in \hplip-3.18.9\prnt\drv\hpcups.drv.in.
May be the settings should be set in the 8720.ppd-file?
Any chance to get the tech class working?

Regards
LPK

Hi,
Have you installed any optional trays in the printer? As per the product information it has mentioned the tray 2 is optional.
Tray 1 still supports all media sizes (photo, cards, paper, envelope, etc). The 8720 is hpcups generated PPD and we cannot modify the settings directly in PPD to work.

Yes, I have a second tray installed.
Windows computer can print without any problems on the second tray also the default setting (tray 2 - lower) is used.
But the in \hplip-3.18.9\prnt\drv\hpcups.drv.in holds entries for the second tray.
What do I have to look for?
Regards
LPK

Can you try marking the second tray as 'Main' tray in the PPD and see if it picks the media from second tray?

Sorry, that I am a bit late.
I tried to follow your suggestions but nothing happened.
I did the follwoing steps:

Changed the original lines in /etc/cups/ppd/<printername>.ppd to

*OpenUI *InputSlot/Media Source: PickOne
*OrderDependency: 10 AnySetup *InputSlot
*DefaultInputSlot: Auto
*InputSlot Auto/Auto-Select: "<</MediaPosition 7>>setpagedevice"
*InputSlot Upper/Photo: "<</MediaPosition 1>>setpagedevice"
*InputSlot Lower/Papier: "<</MediaPosition 4>>setpagedevice"
*CloseUI: *InputSlot

I did this an a fresh HPLIP install on a Ubuntu 18.04.1 vm.
I did this on a previous HPLIP qinstall on a raspberry pi with raspbian stretch.
I did this on previous HPLIB install on an Ubuntu 18.04.1 laptop

on all machines I could see (print dialog in LibreOffice or Firefox) photo/papier/printerdefault
The printerdefault is the lower tray. I marked the paper sheets and - surprisingly - I got the printout from the right tray.
Select Photo- from the upper tray
Select Papier- from the lower tray
Select printerdefault - from the lower tray.

The problem might be to check if the printer has the second tray installed.

BTW: it is all hplip 3.18.9 except the raspberry which is on 3.16.11

Regards
Lutz-Peter

Thanks for trying this one. I think the tech class doesn't support tray 2 for this model. Even if we modify the updated changes are not picked when tested.