[cups] Unable to add a printer

[Znoteer]

Thanks for helping.  See below.

On Mon, Apr 29, 2019 at 07:51:19PM +0100, Brian Potkin wrote:
> > I've just reinstalled Debian 9.9 and cups to a computer.  I have an HP
> > LaserJet 6P attached via USB cable.  I am unable to add the printer to cups.
> 
> [Big snip]
> 
> Let us know what you get for
> 
> /usr/sbin/lpinfo -v

$ sudo lpinfo -v
[sudo] password for znoteer: 
network beh
direct hp
network ipp
serial serial:/dev/ttyS0?baud=115200
network ipp14
network socket
network https
network ipps
network lpd
network http
direct usb://Unknown/Printer
direct hpfax

> 
> and
> 
> /usr/sbin/lpinfo -m | grep 6P

$ sudo lpinfo -m | grep 6P
gutenprint.5.2://hp-lj_6p/expert HP LaserJet 6P - CUPS+Gutenprint v5.2.11
foomatic-db-compressed-ppds:0/ppd/foomatic-ppd/HP-LaserJet_6P-lj4dith.ppd HP LaserJet 6P Foomatic/lj4dith
foomatic-db-compressed-ppds:0/ppd/foomatic-ppd/HP-LaserJet_6P-ljet4.ppd HP LaserJet 6P Foomatic/ljet4
postscript-hp:0/ppd/hplip/HP/hp-laserjet_6mp-ps.ppd HP LaserJet 6P/6MP - PostScript
postscript-hp:0/ppd/hplip/HP/hp-laserjet_6p-ps.ppd HP LaserJet 6P/6MP - PostScript
lsb/usr/hp-ppd/HP/HP_LaserJet_6P.ppd HP LaserJet 6P/6MP - PostScript
foomatic-db-compressed-ppds:0/ppd/foomatic-ppd/Panasonic-DP-8016P-pxlmono.ppd Panasonic DP-8016P Foomatic/pxlmono (recommended)

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