You'd get the same message if gnome-keyring wasn't installed. From what I understand this is really more of a PAM thing really, as PAM decides to be verbose when optional modules are not found (which IMHO makes a lot of sense).
** Package changed: pam-kwallet (Ubuntu) => pam (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to pam in Ubuntu. https://bugs.launchpad.net/bugs/1369220 Title: lightdm: PAM adding faulty module: pam_kwallet.so Status in “pam” package in Ubuntu: New Bug description: Latest /var/log/auth.log, on that fresh stock installation: lightdm: PAM unable to dlopen(pam_kwallet.so): /lib/security/pam_kwallet.so: cannot open shared object file: No such file or lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "oem" ProblemType: Bug DistroRelease: Ubuntu 14.10 Package: lightdm 1.11.9-0ubuntu1 ProcVersionSignature: Ubuntu 3.16.0-14.20-generic 3.16.2 Uname: Linux 3.16.0-14-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.14.7-0ubuntu2 Architecture: amd64 CurrentDesktop: GNOME Date: Sun Sep 14 09:16:06 2014 SourcePackage: lightdm UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pam/+bug/1369220/+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