Please follow the instructions of the section "AppArmor Protection of the printing system" on https://wiki.ubuntu.com/DebuggingPrintingProblems
** Changed in: cups (Ubuntu) Status: Confirmed => 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/1157766 Title: CUPS web interface authentication fails in Raring Status in “cups” package in Ubuntu: Incomplete Bug description: When I try to modify a printer in http://localhost:631/printers I am prompted to authenticate as usual, but my username and my password do not work. I have already checked that my user belongs to the lpadmin group. However I can use system-config-printer. I have attached the cups error_log in debug mode (LogLevel debug). ProblemType: Bug DistroRelease: Ubuntu 13.04 Package: cups 1.6.2-1 ProcVersionSignature: Ubuntu 3.8.0-13.23-generic 3.8.3 Uname: Linux 3.8.0-13-generic x86_64 ApportVersion: 2.9.2-0ubuntu1 Architecture: amd64 Date: Wed Mar 20 15:46:42 2013 InstallationDate: Installed on 2013-03-16 (4 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20130315) MachineType: ASUSTeK Computer Inc. U36SD MarkForUpload: True Papersize: a4 PpdFiles: HL2270DW: Generic PCL Laser Printer MFCJ6510DW: Brother MFC-J6510DW CUPS BRFAX: Brother BRMFCFAX for CUPS ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-13-generic root=UUID=ec9aa77a-fa22-4668-b846-38058c29cf00 ro quiet splash vt.handoff=7 SourcePackage: cups UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/12/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: U36SD.205 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: U36SD dmi.board.vendor: ASUSTeK Computer Inc. dmi.board.version: 1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK Computer Inc. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrU36SD.205:bd07/12/2011:svnASUSTeKComputerInc.:pnU36SD:pvr1.0:rvnASUSTeKComputerInc.:rnU36SD:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0: dmi.product.name: U36SD dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK Computer Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1157766/+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