In my testing with those reproduction steps, PAM's debug output says the module is running and adding the test group to the list of groups. So I'm guessing something lightdm is doing resets the group list at some point past that.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. 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 To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/880104/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
