I was having trouble with this previously, but was trying to put out to many other fires to investigate it. This has now bubbled to the top. I am having this problem with:
$lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 11.04 Release: 11.04 Codename: natty $uname -a Linux <machine> 2.6.38-11-generic-pae #50-Ubuntu SMP Mon Sep 12 22:21:04 UTC 2011 i686 i686 i386 GNU/Linux $ sudo dpkg-query -W | sort -n | grep firefox firefox 7.0.1+build1+nobinonly-0ubuntu0.11.04.1 firefox-branding 7.0.1+build1+nobinonly-0ubuntu0.11.04.1 firefox-globalmenu 7.0.1+build1+nobinonly-0ubuntu0.11.04.1 firefox-gnome-support 7.0.1+build1+nobinonly-0ubuntu0.11.04.1 firefox-locale-en 7.0.1+build1+nobinonly-0ubuntu0.11.04.1 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/812554 Title: Firefox 5 for Ubuntu 1.0 issues undefined command to printer; page setup reverts to Any Printer for Portable Documents Status in “firefox” package in Ubuntu: Confirmed Bug description: Since upgrading to Firefox 5, on Ubuntu 11.04, I can't print from Firefox to my networked printer. I get an error printout from the printer saying: "ERROR NAME: undefined COMMAND: Q OPERAND STACK: " instead of the document printout. Looking at the Page Setup dialog in Firefox 5, I see that it is set for printing to a portable format called "Any Printer" rather than set to my default printer which is a Brother HL-4250DN on the LAN ethernet. Trying to change the printer by pulling down the list in that diaglog and selecting the Brother does not maintain the setting after I click "Apply". When I look after applying and closing the dialog and reopening, it has reverted back to Any Printer, not the Brother. I think this is why the print command from Firefox sends faulty format data to my printer. It's not the printer driver's fault. The same printer works fine on other programs that print, such as LibreOffice, the document viewer for pdf, and Chromium for web sites. It's something wrong in Firefox that won't hold the printer selected in Page Setup. This same hardware used to work on earlier Firefox 3.x.x and 4.x betas. Since I upgraded (by clean installation) to Ubuntu 11.04, I can't print from Firefox 5. Version of Firefox is latest: 5.0+build1+nobinonly-0ubuntu0.11.04.2. Screenprint of dialog is attached. ProblemType: Bug DistroRelease: Ubuntu 11.04 Package: firefox 5.0+build1+nobinonly-0ubuntu0.11.04.2 ProcVersionSignature: Ubuntu 2.6.38-10.46-generic-pae 2.6.38.7 Uname: Linux 2.6.38-10-generic-pae i686 NonfreeKernelModules: wl Architecture: i386 Date: Mon Jul 18 13:41:30 2011 FirefoxPackages: firefox 5.0+build1+nobinonly-0ubuntu0.11.04.2 flashplugin-installer N/A adobe-flashplugin 10.3.181.34-0natty1 icedtea-plugin N/A InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427) ProcEnviron: LANGUAGE=en_US:en LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: firefox UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/812554/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp