Public bug reported:
I have several HP printers. If I connect one of them via USB and click
the "+" button to add a new printer in GNOME's printer setup tool, I get
two entries where a user will not see the difference:
HP-LaserJet-3390
HP-LaserJet-3390-2
To find out why I got two entries, I added two print queues, one using
the first entry, another using the second entry. Then I ran the command
lpstat -v
and got
device for HP-LaserJet-3390: usb://HP/LaserJet%203390?serial=00CNMJP81545
device for HP-LaserJet-3390-2: hp:/usb/HP_LaserJet_3390?serial=00CNMJP81545
So the first comes from the HP LaserJet 3390 discovered via the "usb"
CUPS backend and the second from the same printer via the "hp" backend.
The preferred backend is the latter, as it is made by HP especially for
HP printers. Therefore there should be only one entry, using the "hp"
backend. system-config-printer does this correctly, so usingf the D-Bus
service of system-config-printer one should be able to join these
entries to one using the "hp" backend.
Note that this is not a duplicate of bug 1115669. That bug is about
making duplicate entries distinguishable, this bug is about making the
"hp" backend used with HP printers.
** Affects: gnome-control-center (Ubuntu)
Importance: High
Status: New
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Desktop Bugs, which is subscribed to gnome-control-center in Ubuntu.
https://bugs.launchpad.net/bugs/1115701
Title:
GNOME Printer Setup Tool: HP printers discovered by both usb and hp
CUPS backends -> Two indistinguishable entries in the list of
discovered printers
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