I'm running Ubuntu 15.10 and ran into the same problem as Tristan with my Brother HL-2140. Fortunately, the --debug flag allowed me to work around the problem by making the Apply button available as described above!
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to system-config-printer in Ubuntu. https://bugs.launchpad.net/bugs/782005 Title: Cannot click Apply on "Existing Settings" screen of "Change Driver" wizard in printer properties Status in system-config-printer package in Ubuntu: New Bug description: Binary package hint: system-config-printer I had a Brother MFC-7220 printer set up with the MFC-7225 driver that ships with Ubuntu, and I needed to change it to the correct MFC-7220 driver from the brother-cups-wrapper-laser package. After installing the package I went to Printing, opened my printer's properties, clicked "Change..." beside "Make and Model", and went through the wizard. But when I got to the "Existing Settings" screen, the Apply button was not selectable, not matter what option I chose! See screenshot. I ended up deleting the printer and re-adding it. ProblemType: Bug DistroRelease: Ubuntu 11.04 Package: system-config-printer-gnome 1.3.1+20110222-0ubuntu16.1 ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2 Uname: Linux 2.6.38-8-generic x86_64 Architecture: amd64 Date: Thu May 12 21:40:31 2011 InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429) Lpstat: device for Brother-MFC-7220: ipp://tinygod4:631/printers/Brother-MFC-7220 MachineType: Sony Corporation VGN-CR220E PackageArchitecture: all Papersize: letter PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card PpdFiles: Brother-MFC-7220: Brother MFC7220 for CUPS ProcEnviron: LANGUAGE=en_US:en LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=f0280dd1-b3ff-4fae-984f-ca2c13d31cb0 ro quiet splash vt.handoff=7 SourcePackage: system-config-printer UpgradeStatus: Upgraded to natty on 2011-04-30 (12 days ago) dmi.bios.date: 06/02/2008 dmi.bios.vendor: Phoenix Technologies LTD dmi.bios.version: R1121Q0 dmi.board.asset.tag: N/A dmi.board.name: VAIO dmi.board.vendor: Sony Corporation dmi.board.version: N/A dmi.chassis.asset.tag: N/A dmi.chassis.type: 10 dmi.chassis.vendor: Sony Corporation dmi.chassis.version: N/A dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrR1121Q0:bd06/02/2008:svnSonyCorporation:pnVGN-CR220E:pvrC101G1S1:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A: dmi.product.name: VGN-CR220E dmi.product.version: C101G1S1 dmi.sys.vendor: Sony Corporation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/system-config-printer/+bug/782005/+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