I guess I spoke too soon, my HP 8720 is not printing. Immediately after trouble shooting, my 8720 will print a test page. But later, after rebooting my pc, and turning the printer off and on, the printer won’t print, necessitating another round of debugging. I have printed so many test pages, I’m out of yellow ink. I suspect I’m working against myself with different printer management tools.
Here are the ways to control the printer: 1) the HP Device Manager, 2) the YAST printer as root, where you have to repeatedly set enable printing, and delete the print queue which piles up because of the disable printing 3) Printer’s System Settings Module
A further complicating factor is each of these can have the cursor focus and if one of the windows is still open in the back ground, what ever you do in the foreground doesn’t matter. After trying to print a test page, there’s a print-test-page-success-or-failure popup, which appears to set the printer into a disabled mode, if you reply no.
First, remove all printer queues in YaST.
Connect the printer with the USB cable. make sure it’s turned on
Open a terminal window and do
su -c hp-setup
enter the root password.
You now have 2 options you can use.
Permanent usage through USB cable, pick option one. Configuration should be automatic. Finish it, and it should work. Also when turning on the printer after the computer was booted.
Setting up it’s wifi functionality, pick option three. In that part of the setup you will connect it to your wireless router, the setup will configure the printer on your computer, so that it works over wifi.
This reads like your printer is USB-connected and going in to sleep mode (to save power). Usually power cycling the printer, or reconnecting the USB cable should be sufficient to wake it up again? In any case, from what I’ve read (I don’t own such a device), it might be possible to disable this mode via the front panel…
Verify in the printer that ‘Auto Off/Sleep/Energy Saving Mode’ is disabled and/or the System Mode Time Out is set to zero (0).
Sorry for the delay in my reply. This is what I see
HP Linux Imaging and Printing System (ver. 3.17.9)
Printer/Fax Setup Utility ver. 9.0
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.
QStandardPaths: wrong ownership on runtime directory /run/user/1000, 1000 instead of 0
Searching... (bus=usb, search=(None), desc=0)
error: Channel write error