Jason, the message you mention has nothing to do with the bug reported here, it is from the color management daemon and in no case prevents a job from printing. The bug reported here is about a problem of the GTK/GNOME print dialog not handling printer driver updates correctly. It only happens when a printer driver gets updated (can happen during a general system update or an upgrade to a new Ubuntu version). We need your error_log (in debug mode, see "CUPS error_log" on https://wiki.ubuntu.com/DebuggingPrintingProblems) to judge whether you are suffering this bug or something else.
** Description changed: [Impact] The problem occurs when the printer's driver package is updated and with this the PPD is replaced and one of the default settings of the queue is not available any more in the new PPD file. Then the setting is prefixed with "Custom." and with this the jobs fail. See comment #15 for more info. [Test Case] - Create a print queue with a PPD. - evince an arbitrary PDF file - Click the print icon - In the print dialog choose the newly created queue and choose some uncommon paper size (not custom). Click "Print". - Check /var/log/cups/error_log, the page size gets correctly received. - Close evince. - - Stop CUPS, edit the PPD file removing the paper size you have selected for your job in the PageSize, PageRegion, PaperDimension, and ImageableArea lines. + - Stop CUPS, edit the PPD file (in /etc/cups/ppd/) removing the paper size you have selected for your job in the PageSize, PageRegion, PaperDimension, and ImageableArea lines. - Start CUPS. - Open the same PDF file again with evince, click Print and then select "Print" in the print dialog without changing anything. - The job fails, in /var/log/cups/error_log you see that the page size is prefixed with "Custom.". With the fixed package installed the job will print. [Regression Potential] The change applies only to saved settings of the print dialog not matching with any of the settings available in the PPD file. In rare cases the fix could fail by mis-understanding the setting and this way not being effective. For options which do not support setting custom values (the vast majority) the patch should always prevent a job failure though. [Other Info] Complete info about the bug and the fix in comment #15, Original bug description: I am unable to print to my network-attached printer after upgrade to bionic. ps shows: lp 26047 0.0 0.0 91668 5756 ? S 15:06 0:00 \_ HP-ENVY-4500-new 473 vorlon USCIS Form I-9 1 print-content-optimize=auto print-rendering-intent=auto cupsPrintQuality=4 number-up=1 MediaType=Stationery noCollate print-scaling=auto PageSize=Custom.Letter.SM ColorModel=RGB Duplex=DuplexNoTumble job-uuid=urn:uuid:08c937ec-ccb6-3ff1-6ed4-212128e4257b job-originating-host-name=localhost date-time-at-creation= date-time-at-processing= time-at-creation=1523570792 time-at-processing=1523570792 print-quality=4 lp 26050 0.1 0.0 0 0 ? Z 15:06 0:00 | \_ [gs] <defunct> lp 26048 0.0 0.0 79908 3836 ? S 15:06 0:00 \_ HP-ENVY-4500-new 473 vorlon USCIS Form I-9 1 print-content-optimize=auto print-rendering-intent=auto cupsPrintQuality=4 number-up=1 MediaType=Stationery noCollate print-scaling=auto PageSize=Custom.Letter.SM ColorModel=RGB Duplex=DuplexNoTumble job-uuid=urn:uuid:08c937ec-ccb6-3ff1-6ed4-212128e4257b job-originating-host-name=localhost date-time-at-creation= date-time-at-processing= time-at-creation=1523570792 time-at-processing=1523570792 print-quality=4 root 26049 0.0 0.0 84388 6192 ? S 15:06 0:00 \_ ipp://HP645106EA160E.local:631/ipp/print 473 vorlon USCIS Form I-9 1 print-content-optimize=auto print-rendering-intent=auto cupsPrintQuality=4 number-up=1 MediaType=Stationery noCollate print-scaling=auto PageSize=Custom.Letter.SM ColorModel=RGB Duplex=DuplexNoTumble job-uuid=urn:uuid:08c937ec-ccb6-3ff1-6ed4-212128e4257b job-originating-host-name=localhost date-time-at-creation= date-time-at-processing= time-at-creation=1523570792 time-at-processing=1523570792 print-quality=4 Note the un-reaped gs process. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: cups 2.2.7-1ubuntu2 ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10 Uname: Linux 4.15.0-13-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.9-0ubuntu4 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Thu Apr 12 15:07:49 2018 InstallationDate: Installed on 2010-09-24 (2757 days ago) InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1) MachineType: LENOVO 2306CTO Papersize: letter ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-13-generic.efi.signed root=/dev/mapper/hostname-root ro quiet splash vt.handoff=1 SourcePackage: cups UpgradeStatus: Upgraded to bionic on 2018-03-21 (21 days ago) dmi.bios.date: 10/25/2013 dmi.bios.vendor: LENOVO dmi.bios.version: G2ET97WW (2.57 ) dmi.board.asset.tag: Not Available dmi.board.name: 2306CTO dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrG2ET97WW(2.57):bd10/25/2013:svnLENOVO:pn2306CTO:pvrThinkPadX230:rvnLENOVO:rn2306CTO:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.family: ThinkPad X230 dmi.product.name: 2306CTO dmi.product.version: ThinkPad X230 dmi.sys.vendor: LENOVO modified.conffile..etc.cups.cupsd.conf: [inaccessible: [Errno 13] Permission denied: '/etc/cups/cupsd.conf'] -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to gtk+3.0 in Ubuntu. https://bugs.launchpad.net/bugs/1763520 Title: after upgrade to bionic, printing fails without explanation / logs / debuggability Status in gtk+3.0 package in Ubuntu: Fix Released Status in gtk+3.0 source package in Bionic: Fix Committed Status in gtk+3.0 source package in Cosmic: Won't Fix Bug description: [Impact] The problem occurs when the printer's driver package is updated and with this the PPD is replaced and one of the default settings of the queue is not available any more in the new PPD file. Then the setting is prefixed with "Custom." and with this the jobs fail. See comment #15 for more info. [Test Case] - Create a print queue with a PPD. - evince an arbitrary PDF file - Click the print icon - In the print dialog choose the newly created queue and choose some uncommon paper size (not custom). Click "Print". - Check /var/log/cups/error_log, the page size gets correctly received. - Close evince. - Stop CUPS, edit the PPD file (in /etc/cups/ppd/) removing the paper size you have selected for your job in the PageSize, PageRegion, PaperDimension, and ImageableArea lines. - Start CUPS. - Open the same PDF file again with evince, click Print and then select "Print" in the print dialog without changing anything. - The job fails, in /var/log/cups/error_log you see that the page size is prefixed with "Custom.". With the fixed package installed the job will print. [Regression Potential] The change applies only to saved settings of the print dialog not matching with any of the settings available in the PPD file. In rare cases the fix could fail by mis-understanding the setting and this way not being effective. For options which do not support setting custom values (the vast majority) the patch should always prevent a job failure though. [Other Info] Complete info about the bug and the fix in comment #15, Original bug description: I am unable to print to my network-attached printer after upgrade to bionic. ps shows: lp 26047 0.0 0.0 91668 5756 ? S 15:06 0:00 \_ HP-ENVY-4500-new 473 vorlon USCIS Form I-9 1 print-content-optimize=auto print-rendering-intent=auto cupsPrintQuality=4 number-up=1 MediaType=Stationery noCollate print-scaling=auto PageSize=Custom.Letter.SM ColorModel=RGB Duplex=DuplexNoTumble job-uuid=urn:uuid:08c937ec-ccb6-3ff1-6ed4-212128e4257b job-originating-host-name=localhost date-time-at-creation= date-time-at-processing= time-at-creation=1523570792 time-at-processing=1523570792 print-quality=4 lp 26050 0.1 0.0 0 0 ? Z 15:06 0:00 | \_ [gs] <defunct> lp 26048 0.0 0.0 79908 3836 ? S 15:06 0:00 \_ HP-ENVY-4500-new 473 vorlon USCIS Form I-9 1 print-content-optimize=auto print-rendering-intent=auto cupsPrintQuality=4 number-up=1 MediaType=Stationery noCollate print-scaling=auto PageSize=Custom.Letter.SM ColorModel=RGB Duplex=DuplexNoTumble job-uuid=urn:uuid:08c937ec-ccb6-3ff1-6ed4-212128e4257b job-originating-host-name=localhost date-time-at-creation= date-time-at-processing= time-at-creation=1523570792 time-at-processing=1523570792 print-quality=4 root 26049 0.0 0.0 84388 6192 ? S 15:06 0:00 \_ ipp://HP645106EA160E.local:631/ipp/print 473 vorlon USCIS Form I-9 1 print-content-optimize=auto print-rendering-intent=auto cupsPrintQuality=4 number-up=1 MediaType=Stationery noCollate print-scaling=auto PageSize=Custom.Letter.SM ColorModel=RGB Duplex=DuplexNoTumble job-uuid=urn:uuid:08c937ec-ccb6-3ff1-6ed4-212128e4257b job-originating-host-name=localhost date-time-at-creation= date-time-at-processing= time-at-creation=1523570792 time-at-processing=1523570792 print-quality=4 Note the un-reaped gs process. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: cups 2.2.7-1ubuntu2 ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10 Uname: Linux 4.15.0-13-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.9-0ubuntu4 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Thu Apr 12 15:07:49 2018 InstallationDate: Installed on 2010-09-24 (2757 days ago) InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1) MachineType: LENOVO 2306CTO Papersize: letter ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-13-generic.efi.signed root=/dev/mapper/hostname-root ro quiet splash vt.handoff=1 SourcePackage: cups UpgradeStatus: Upgraded to bionic on 2018-03-21 (21 days ago) dmi.bios.date: 10/25/2013 dmi.bios.vendor: LENOVO dmi.bios.version: G2ET97WW (2.57 ) dmi.board.asset.tag: Not Available dmi.board.name: 2306CTO dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrG2ET97WW(2.57):bd10/25/2013:svnLENOVO:pn2306CTO:pvrThinkPadX230:rvnLENOVO:rn2306CTO:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.family: ThinkPad X230 dmi.product.name: 2306CTO dmi.product.version: ThinkPad X230 dmi.sys.vendor: LENOVO modified.conffile..etc.cups.cupsd.conf: [inaccessible: [Errno 13] Permission denied: '/etc/cups/cupsd.conf'] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtk+3.0/+bug/1763520/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp