1705348 - print does not print or even trigger CUPS (broken saved print settings?)

Status: RESOLVED FIXED

(Core :: Printing: Setup, defect, P3)

Description

[Germano Massullo (Thetra)]

User Agent: Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:87.0) Gecko/20100101 Firefox/87.0

Steps to reproduce:

When I try to print a page, the printer does not start.
I tried to enable
LogLevel debug
in /etc/cups/cupsd.conf and restarting the CUPS service, but in journal logs there is not even CUPS receiving an input from Firefox.
This problem was not happening with the old Firefox print feature

System details:
Fedora 33
firefox-87.0-2.fc33.x86_64
cups-2.3.3op2-3.fc33.x86_64

Comment 1

[BugBot [:suhaib / :marco]]

The Bugbug bot thinks this bug should belong to the 'Core::Printing: Setup' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.

Comment 2

[Emilio Cobos Álvarez [:emilio]]

Hmm, we're probably going to need more details on how to reproduce this, because I'm using Fedora 33 as well and it works here... Can you attach the contents of about:support to the bug? Does clearing the saved print settings help?

Comment 3

[Emilio Cobos Álvarez [:emilio]]

Also does printing from the system dialog work? That uses the old codepath so it ought to work (otherwise it might be a regression in Fedora somehow?)

Comment 4

[Germano Massullo (Thetra)]

Attachment: about_support.txt

Comment 5

[Germano Massullo (Thetra)]

(In reply to Emilio Cobos Álvarez (:emilio) from comment #2)

Does clearing the saved print settings help?
how can I clear them?

Also does printing from the system dialog work?
How can I access to system dialog printing menu?

Comment 6

[Germano Massullo (Thetra)]

(In reply to Emilio Cobos Álvarez (:emilio) from comment #2)

Does clearing the saved print settings help?

how can I clear them?

Also does printing from the system dialog work?

How can I access to system dialog printing menu?

Comment 7

[Emilio Cobos Álvarez [:emilio]]

Attachment: screenshot

There's a "print using the system dialog" at the bottom right of the print preview.

About clearing, there's a "Clear saved print settings" button in about:support.

Comment 8

[Emilio Cobos Álvarez [:emilio]]

One oddity of that about:support in comment 4 is that a lot of print.print_to_filenames are empty, which is slightly odd.

Comment 9

[Germano Massullo (Thetra)]

Clear saved print settings" button in about:support fixed the problem! Now Firefox prints!

Comment 10

[Emilio Cobos Álvarez [:emilio]]

Hmm... so that's good, at least :)

Also, great that we have a copy of those prefs in comment 4, so we can investigate a bit more...

Can you attach your about:support now, after clearing and printing? That should allow us to hopefully spot the difference that's causing this. Thanks!

Comment 11

[Germano Massullo (Thetra)]

Attachment: about_support_fixed.txt

Comment 12

[Emilio Cobos Álvarez [:emilio]]

I think print.printer_Officejet_7110.print_to_file might be the culprit, because it'd try to print to an empty file... Does reverting that setting to true manually in about:config bring the problem back?

Comment 13

[Germano Massullo (Thetra)]

Setting print.printer_Officejet_7110.print_to_file to true triggers the problem

Comment 14

[Emilio Cobos Álvarez [:emilio]]

Attachment: Bug 1705348 - printToFile should only be true for the PDF printer. r=emalysz

There are users with broken prefs (old bugs that are fixed perhaps?),
but anyhow there's no sensible reason to set printToFile to true for
users printing from the print dialog.

We were working around it for the PDF printer but there's no reason we
shouldn't do it for other printers.

Comment 15

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/44332367dd47
printToFile should only be true for the PDF printer. r=emalysz

Comment 16

[Alexandru Michis [:malexandru]]

https://hg.mozilla.org/mozilla-central/rev/44332367dd47

Comment 17

[Germano Massullo (Thetra)]

Hello, I am experiencing again being unable to print on Firefox 96.0
print.printer_Officejet_7110.print_to_file is setted to false. Trying printing from system dialog does not fix the problem
Should I open a new bugreport?