Anything in your cups error_log with debugging enabled as described here: https://wiki.ubuntu.com/DebuggingPrintingProblems#CUPS_error_log
** Changed in: cups (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to cups in Ubuntu. https://bugs.launchpad.net/bugs/1372596 Title: /etc/cups/printers.conf rewritten with wrong information at every reboot Status in “cups” package in Ubuntu: Incomplete Bug description: When I boot up my system, /etc/cups/printers.conf has the wrong device URI for my printer. I've tried: A) correcting it through the cups web GUI at localhost:631 B) substituting a corrected printers.conf by hand by performing: service cups stop cp -a /etc/cups/printers.conf.correct /etc/cups/printers.conf service cups start Both means correct the problem, and I can print again... UNTIL I reboot. After the next boot, the incorrect URI is back in printers.conf and I can't print again. I can't find where the bad URI is respawning from. find /etc /var /home -type d -exec grep -H <bad_IP_address_from_URI> '{}' \; -print comes up with nothing. It's got to be cached somewhere, though it appears not in textual form. Where does this bad URI keep growing back from and how do I stop it?!?!? ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: cups 1.7.2-0ubuntu1.2 ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6 Uname: Linux 3.13.0-35-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.4 Architecture: amd64 CupsErrorLog: CurrentDesktop: XFCE Date: Mon Sep 22 11:00:49 2014 InstallationDate: Installed on 2014-07-22 (61 days ago) InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2) KernLog: Lpstat: device for Brother8680DN: ipp://192.168.150.203:631/printers/Brother8680DN MachineType: Micro-Star International Co., Ltd. GT70 2PC Papersize: letter PpdFiles: Brother8680DN: Brother MFC-8680DN BR-Script3 ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-35-generic root=UUID=9dda5f94-8c6c-45a4-8a4c-38b3f69a8b15 ro rootflags=subvol=@ rootflags=discard,ssd,compress=no,subvol=@ quiet splash vt.handoff=7 SourcePackage: cups UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/12/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: E1763IMS.70T dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: MS-1763 dmi.board.vendor: Micro-Star International Co., Ltd. dmi.board.version: REV:0.C dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: Micro-Star International dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrE1763IMS.70T:bd02/12/2014:svnMicro-StarInternationalCo.,Ltd.:pnGT702PC:pvrREV0.C:rvnMicro-StarInternationalCo.,Ltd.:rnMS-1763:rvrREV0.C:cvnMicro-StarInternational:ct10:cvrN/A: dmi.product.name: GT70 2PC dmi.product.version: REV:0.C dmi.sys.vendor: Micro-Star International Co., Ltd. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1372596/+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