FWIW, I encountered a similar problem, using sssd instead of pam-krb5, though. I can also confirm that the packages from the PPA make lightdm correctly refresh Kerberos credentials and thus fix the issue I had. It would be very welcome indeed if that fix made it into the trusty repository proper. Thanks!
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/1296276 Title: Unlocking with greeter fails to properly renew kerberos tickets with pam-krb5 Status in Light Display Manager: Fix Committed Status in Light Display Manager 1.10 series: Triaged Status in “lightdm” package in Ubuntu: Triaged Bug description: I am using the pam-krb5 module to log into a Kerberos realm using lightdm. This works the initial time I log in, when I come in through lightdm. However, once I am logged in, and I lock the screen using light-locker, when I unlock the screen I no longer get renewed tickets. The problem seems to be this: -rw------- 1 me me 504 Mar 23 08:37 krb5cc_1000_sjkfhagfg -rw------- 1 root root 504 Mar 23 08:38 krb5cc_pam_lsdkjhfsdk So what is happening is that on the initial login, I get a valid ticket cache, owned by my logging-in user, and showing my UID in the file name. This ticket works fine. However, once I lock the screen and then unlock it, I get a ticket cache owned by root, with "_pam_" in the filename, and of course I can't use it because I am not logged in as root. This problem did not occur in 12.04 LTS, probably because it did not use light-locker. The pam-krb5 module works in all other cases in my installations, so I do not believe this is any kind of problem with the pam_krb5 module. Thanks, Brian ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: light-locker 1.2.1-0ubuntu1 ProcVersionSignature: Ubuntu 3.13.0-18.38-generic 3.13.6 Uname: Linux 3.13.0-18-generic x86_64 ApportVersion: 2.13.3-0ubuntu1 Architecture: amd64 Date: Sun Mar 23 08:40:38 2014 InstallationDate: Installed on 2014-03-22 (0 days ago) InstallationMedia: Ubuntu-Server 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140320) ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: light-locker UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1296276/+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
