Threads are auto-locked after six months. I think that is because Firefox changes a lot over time so it's usually best to ask questions afresh.

I use Windows, so apologies for the question: this is an error displayed by your OS's printing software, not by Firefox itself?

It does seem wrong that the print job size was 0 kilobytes:

But you're saying that you do not get that error now in Firefox 85?

Hi jscher2000, yes and no, the error message is from my OS because that is what handles the printing, but it is caused by the way Firefox handles printing and then sends it on to the driver in the OS.

It only happened in Firefox, and is not present in the newer version 85.0.1, I'm today on 86.0 and the problem just returned! I get the attached error. I then tried printing from thunderbird 68.10.0 (64-bit) and it worked fine.

I then tried to print from Chrome and it worked fine, though the print job do say 0k in size - but it's only 1 page.

So what ever Mozilla did in the update from 85.0.1 to 86.0 broke the printing again! So now I'm back to not being able to print from Firefox, but anywhere else is fine.

Hope the techs here now will look into this:)

Jan In the mean time, how can I roll back to previous 85.0.1 without loosing something and not get auto updated again to 86.0?

about:config print

app.normandy.startupRolloutPrefs.print.tab_modal.enabled true apz.printtree false browser.contentblocking.fingerprinting.preferences.ui.enabled true browser.contentblocking.report.fingerprinter.url https://support.mozilla.org/1/firefox/%VERSION%/%OS%/%LOCALE%/fingerprinters-report devtools.debugger.auto-pretty-print false devtools.debugger.pretty-print-enabled true dom.enable_window_print true dom.keyboardevent.keypress.dispatch_non_printable_keys_only_system_group_in_content true dom.keyboardevent.keypress.hack.dispatch_non_printable_keys www.icloud.com dom.keyboardevent.keypress.hack.dispatch_non_printable_keys.addl gfx.webrender.gl-debug-message-print false layers.acceleration.draw-fps.print-histogram false pdfjs.enablePrintAutoRotate false print.always_print_silent false print.cups.monochrome.enabled true print.cups.monochrome.extra_settings print.default_dpi 144.0 print.font-variations-as-paths true print.pages_per_sheet.enabled true print.print_bgcolor false print.print_bgimages false print.print_duplex 0 print.print_edge_bottom 0 print.print_edge_left 0 print.print_edge_right 0 print.print_edge_top 0 print.print_evenpages true print.print_footercenter print.print_footerleft &PT print.print_footerright &D print.print_headercenter print.print_headerleft &T print.print_headerright &U print.print_in_color true print.print_margin_bottom 0.5 print.print_margin_left 0.5 print.print_margin_right 0.5 print.print_margin_top 0.5 print.print_oddpages true print.print_orientation 0 print.print_page_delay 50 print.print_paper_data 0 print.print_paper_height 11.00 print.print_paper_name A4 no margins print.print_paper_size_unit 0 print.print_paper_width 9.50 print.print_reversed false print.print_scaling 1.00 print.print_shrink_to_fit true print.print_to_file false print.print_to_filename /home/th/Downloads/How to Install KDE Connect on Ubuntu 16.04.pdf print.print_unwriteable_margin_bottom 0 print.print_unwriteable_margin_left 0 print.print_unwriteable_margin_right 0 print.print_unwriteable_margin_top 0 print.print_via_parent true print.printer_MG3000LAN.print_bgcolor false print.printer_MG3000LAN.print_bgimages false print.printer_MG3000LAN.print_duplex 0 print.printer_MG3000LAN.print_edge_bottom 0 print.printer_MG3000LAN.print_edge_left 0 print.printer_MG3000LAN.print_edge_right 0 print.printer_MG3000LAN.print_edge_top 0 print.printer_MG3000LAN.print_footercenter print.printer_MG3000LAN.print_footerleft &PT print.printer_MG3000LAN.print_footerright &D print.printer_MG3000LAN.print_headercenter print.printer_MG3000LAN.print_headerleft &T print.printer_MG3000LAN.print_headerright &U print.printer_MG3000LAN.print_in_color true print.printer_MG3000LAN.print_margin_bottom 0.5 print.printer_MG3000LAN.print_margin_left 0.5 print.printer_MG3000LAN.print_margin_right 0.5 print.printer_MG3000LAN.print_margin_top 0.5 print.printer_MG3000LAN.print_orientation 0 print.printer_MG3000LAN.print_page_delay 50 print.printer_MG3000LAN.print_paper_height 11.6945 print.printer_MG3000LAN.print_paper_id iso_a4_210x297mm print.printer_MG3000LAN.print_paper_size_unit 0 print.printer_MG3000LAN.print_paper_width 8.26378 print.printer_MG3000LAN.print_resolution 0 print.printer_MG3000LAN.print_reversed false print.printer_MG3000LAN.print_scaling 1 print.printer_MG3000LAN.print_shrink_to_fit false print.printer_MG3000LAN.print_to_file false print.printer_MG3000LAN.print_to_filename print.printer_MG3000LAN.print_unwriteable_margin_bottom 66 print.printer_MG3000LAN.print_unwriteable_margin_left 13 print.printer_MG3000LAN.print_unwriteable_margin_right 13 print.printer_MG3000LAN.print_unwriteable_margin_top 12 print.printer_Print_to_File.print_bgcolor false print.printer_Print_to_File.print_bgimages false print.printer_Print_to_File.print_duplex 0 print.printer_Print_to_File.print_edge_bottom 0 print.printer_Print_to_File.print_edge_left 0 print.printer_Print_to_File.print_edge_right 0 print.printer_Print_to_File.print_edge_top 0 print.printer_Print_to_File.print_footercenter print.printer_Print_to_File.print_footerleft &PT print.printer_Print_to_File.print_footerright &D print.printer_Print_to_File.print_headercenter print.printer_Print_to_File.print_headerleft &T print.printer_Print_to_File.print_headerright &U print.printer_Print_to_File.print_in_color true print.printer_Print_to_File.print_margin_bottom 0.5 print.printer_Print_to_File.print_margin_left 0.5 print.printer_Print_to_File.print_margin_right 0.5 print.printer_Print_to_File.print_margin_top 0.5 print.printer_Print_to_File.print_orientation 0 print.printer_Print_to_File.print_page_delay 50 print.printer_Print_to_File.print_paper_height 11.6929 print.printer_Print_to_File.print_paper_id iso_a4 print.printer_Print_to_File.print_paper_size_unit 0 print.printer_Print_to_File.print_paper_width 8.26772 print.printer_Print_to_File.print_reversed false print.printer_Print_to_File.print_scaling 1 print.printer_Print_to_File.print_shrink_to_fit true print.printer_Print_to_File.print_to_file false print.printer_Print_to_File.print_to_filename /home/th/Downloads/Lenovo Thinkpad release Timeline 2.pdf print.printer_Print_to_File.print_unwriteable_margin_bottom 0 print.printer_Print_to_File.print_unwriteable_margin_left 0 print.printer_Print_to_File.print_unwriteable_margin_right 0 print.printer_Print_to_File.print_unwriteable_margin_top 0 print.save_print_settings true print.show_print_progress true print.shrink-to-fit.scale-limit-percent 20 print.tab_modal.enabled true print.use_simplify_page true privacy.resistFingerprinting false privacy.resistFingerprinting.autoDeclineNoUserInputCanvasPrompts true privacy.resistFingerprinting.jsmloglevel Warn privacy.resistFingerprinting.randomDataOnCanvasExtract true privacy.resistFingerprinting.reduceTimerPrecision.jitter true privacy.resistFingerprinting.reduceTimerPrecision.microseconds 1000 privacy.resistFingerprinting.target_video_res 480 privacy.trackingprotection.fingerprinting.enabled true services.sync.prefs.sync.privacy.resistFingerprinting true services.sync.prefs.sync.privacy.resistFingerprinting.reduceTimerPrecision.jitter true services.sync.prefs.sync.privacy.resistFingerprinting.reduceTimerPrecision.microseconds true services.sync.prefs.sync.privacy.trackingprotection.fingerprinting.enabled true urlclassifier.features.fingerprinting.annotate.blacklistTables base-fingerprinting-track-digest256 urlclassifier.features.fingerprinting.annotate.whitelistTables mozstd-trackwhite-digest256,google-trackwhite-digest256 urlclassifier.features.fingerprinting.blacklistTables base-fingerprinting-track-digest256 urlclassifier.features.fingerprinting.whitelistTables mozstd-trackwhite-digest256,google-trackwhite-digest256

Ok, So I have narrowed the problem down to the information sent from Firefox to printer is a paper size corruption of some sort, because if I choose to use the system dialog for printing and just print I get same error, but if I change the papersize to first A5 and then back to A4 the printer now prints. This do NOT work with Firefox build-in printer settings. So the new way FF prints seem to be the main problem here.

This thread dealt with something similar: https://bugzilla.mozilla.org/show_bug.cgi?id=1691798

Could Mozilla support please look into this, thank you:)

Jan

Hi Jan, thank you for the report.

The bug report says the fix will be in Firefox 87, which releases around March 23. Within a couple days you should be able to test it by installing the "Developer Edition" which can coexist side-by-side with your regular release of Firefox. More info: https://www.mozilla.org/firefox/developer/

For now, though, did the double-switch of paper size work around it permanently or are you saying you need to do that each time you print?

" jscher2000

   Top 10 Contributor

26.02.2021 17.29

Hi Jan, thank you for the report.

The bug report says the fix will be in Firefox 87, which releases around March 23. Within a couple days you should be able to test it by installing the "Developer Edition" which can coexist side-by-side with your regular release of Firefox. More info: https://www.mozilla.org/firefox/developer/

For now, though, did the double-switch of paper size work around it permanently or are you saying you need to do that each time you print?"

Hi jscher2000, I'm saying that I need to do this every time that i want to print, which makes this a permanent problem for now!

I don't understand Mozilla, if this is solved in 87, why not just issue a patch that solves it now instead of having to wait almost 1 month before solution comes?

Could you try modifying the following preference in about:config:

print.printer_MG3000LAN.print_paper_id

Double-click the current value and change it to 9 -- which I think was the old paper_id for A4 sized paper -- and then press Enter or click the blue checkmark button.

Does that work any better?

Hi jscher2000, current value is iso_a4_210x297mm - new value is 9(which changed to iso_a4), that didn't change anything, I still get error on both FF's own printing page and on the systems.

I did get something strange though, when I use my own work around and change from A4 to A5 and back to A4 and print: now it ignores only to print page 1 and print all pages, so I'm changing the value back:)

Look like the other thread is going to make an uplift to 88, because the problem were solved in the beta but not in the other versions. But that was for Brother printer, hope it will be solved for all printers.

Jan

Hi jscher2000, after updating to FF 87.0 the problem is gone, hope it will not come back again in newer versions:)

Thank you for all you help:)

With kind regards

Jan

Hello,

I am glad to hear that your problem has been resolved. If you haven't already, please select the answer that solves the problem. This will help other users with similar problems find the solution.

Thank you for contacting Mozilla Support.