The correct way to fix this issue is not to comment out the lines
mentioning kwallet, but to make the modules silent by prepending a '-'
(dash) to each line. Example:
# /etc/pam.d/lightdm
-auth optional pam_kwallet.so
-auth optional pam_kwallet5.so
-session optional pam_kwallet.so auto_start
-session optional pam_kwallet5.so auto_start
Same in /etc/pam.d/lightdm-greeter.
This feature is mentioned in the pam.conf(5) manpage:
If the type value from the list above is prepended with a - character
the PAM library will not log to the system log if it is not possible to
load the module because it is missing in the system. This can be useful
especially for modules which are not always installed on the system and
are not required for correct authentication and authorization of the
login session.
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https://bugs.launchpad.net/bugs/1309535
Title:
Running without pam-kwallet installed issues a warning in auth.log
Status in lightdm package in Ubuntu:
Won't Fix
Status in pam package in Ubuntu:
Won't Fix
Bug description:
After upgrading to lightdm 1.10.0-0ubuntu2 I started to see this error
in auth.log:
Apr 10 14:34:54 simon-laptop lightdm: PAM unable to dlopen(pam_kwallet.so):
/lib/security/pam_kwallet.so: cannot open shared object file: No such file or
directory
Apr 10 14:34:54 simon-laptop lightdm: PAM adding faulty module: pam_kwallet.so
This seems like a regression because with lightdm 1.10.0-0ubuntu1 or
before I didn't have this error showing. FYI, I don't have the pam-
kwallet package installed.
$ lsb_release -rd
Description: Ubuntu 14.04 LTS
Release: 14.04
$ apt-cache policy lightdm pam-kwallet
lightdm:
Installed: 1.10.0-0ubuntu3
Candidate: 1.10.0-0ubuntu3
Version table:
*** 1.10.0-0ubuntu3 0
500 http://archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
100 /var/lib/dpkg/status
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: lightdm 1.10.0-0ubuntu3
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Apr 18 09:12:37 2014
InstallationDate: Installed on 2014-01-26 (81 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140124)
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)
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