This is not a bug of cups-filters, but a bug in the set of UDEV rules which comes with Linux distributions. To support your USB->Serial adapter correctly the UDEV rule which you mention in the upstream bug report needs to be added. And as such adapters support not only printers cups-filters is the wrong place for adding this UDEV rule.
Moving to udev. ** Package changed: cups-filters (Ubuntu) => udev (Ubuntu) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to cups-filters in Ubuntu. https://bugs.launchpad.net/bugs/1702320 Title: CUPS serial backend don't initialize correctly USB to serial converters Status in udev package in Ubuntu: New Bug description: CUPS serial backend don't initialize correctly USB to serial converters See here for more details: https://bugs.linuxfoundation.org/show_bug.cgi?id=1397 ProblemType: Bug DistroRelease: Ubuntu 17.04 Package: cups-filters 1.13.4-1ubuntu1 ProcVersionSignature: Ubuntu 4.10.0-28.32-generic 4.10.17 Uname: Linux 4.10.0-28-generic x86_64 ApportVersion: 2.20.4-0ubuntu4.4 Architecture: amd64 CurrentDesktop: Unity:Unity7 Date: Tue Jul 4 16:57:25 2017 InstallationDate: Installed on 2010-02-19 (2691 days ago) InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027) Lpstat: device for PRN-ttyS0: serial:/dev/ttyUSB0?baud=38400+bits=8+parity=none+flow=dtrdsr MachineType: System manufacturer System Product Name Papersize: a4 ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.10.0-28-generic root=UUID=6c704848-ff2d-4ef5-ba14-bbbe8a620cd0 ro quiet splash vt.handoff=7 SourcePackage: cups-filters UpgradeStatus: Upgraded to zesty on 2017-07-03 (0 days ago) dmi.bios.date: 08/23/2010 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 1003 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: P5KPL-VM dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: x.xx dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1003:bd08/23/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5KPL-VM:rvrx.xx:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/udev/+bug/1702320/+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
