I've been investigating this issue recently and can confirm that, while this is not an issue in my Fedora machine with the very same version of cups, cups-pk-helper and gnome-control-center installed, it is still present in Ubuntu, due to what I believe it might be a bug in the way CUPS is being packaged by debian (thus Ubuntu would have inherited the bug). Thus it's probably a bug in Debian as well.
Long story short, while Fedora configures "root" to be part of CUPS system administration group, Debian/Ubuntu does not do that and instead defines "lpadmin" as the only member of that group. Now, because gnome- control-center actually relies in cups-pk-helper to cancel jobs, CUPS won't allow doing that in ubuntu because neither the owner of the job (cups-pk-helper runs as root, not as the username originating the cancel request from g-c-c) nor an user belonging to SystemGroup is requesting such an operation. As a result, the operation is not cancelled. You can see a more detailed explanation here: https://bugzilla.gnome.org/show_bug.cgi?id=669679#c23 I fixed this locally by changing the debian/rules so that I pass "--with-system-groups='lpadmin root'" to dh_auto_configure, instead of simply passing 'lpadmin' and that works for me. I think it's worth reporting this to debian, but it's unclear to me how to do so, so I thought I would report it here for now, in case someone could lend a hand with it. Thoughts? PS: A temporary fix for users facing this problem, better than setting JobsPrivateValues to 'none', would be to simply edit /etc/cups/cups- files.conf and manually add 'root' to SystemGroup -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/934291 Title: Deleting or stopping print jobs does not work Status in GNOME Control Center: Incomplete Status in gnome-control-center package in Ubuntu: Incomplete Bug description: Deleting or stopping print jobs through the "gnome-control-center -> printers" menu is not possible. (Black rectangle for stopping can be pressed, nothing happens.) Deleting with cups via webinterface does work. ( http://localhost:631/ ) Please let me know which information to provide. Cheers ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: gnome-control-center 1:3.2.2-0ubuntu1 ProcVersionSignature: Ubuntu 3.0.0-16.28-generic 3.0.17 Uname: Linux 3.0.0-16-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 1.23-0ubuntu4 Architecture: amd64 Date: Fri Feb 17 16:47:32 2012 InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429) SourcePackage: gnome-control-center UpgradeStatus: Upgraded to oneiric on 2011-12-17 (61 days ago) usr_lib_gnome-control-center: deja-dup 22.0~bzr1290.37~oneiric1 gnome-bluetooth 3.2.0-0ubuntu2 indicator-datetime 0.3.1-0ubuntu1.1 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/934291/+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
