The issue was lightdm was calling initgroups after pam_setcred had been
called - thus any group changes in pam_setcred were not retained. This
is fixed in lightdm 1.1.9.
** Changed in: lightdm (Ubuntu)
Status: Confirmed => Fix Committed
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https://bugs.launchpad.net/bugs/880104
Title:
Using pam_group results in: pam_group(lightdm:setcred): unable to set
the group membership for user: operation not permitted
Status in Light Display Manager:
Fix Committed
Status in “lightdm” package in Ubuntu:
Fix Committed
Bug description:
I have configured many computers to authenticate through a openldap server.
To be able to be admin in each computer, I use pam_group feature to select
additional groups for user. (/etc/security/group.conf).
Login directly on the console give me good group membership (the one defined
in group.conf), but login from lightdm results in an error message in
auth.local:
pam_group(lightdm:setcred): unable to set the group membership for user:
operation not permitted.
Of course, the group membership is not set as it should.
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