PAM authentication error (Mint Ubunt Linux Grub rescue /etc/pam.d/)

 Unable to sudo: PAM authentication error: Module is unknown [closed]

Mint Ubunt Linux Grub rescue /etc/pam.d/ 

 

* Refer: https://stackoverflow.com/questions/25897572/unable-to-sudo-pam-authentication-error-module-is-unknown

 

* Problem.

sudo su -

>>

 PAM authentication error: Module is unknown

 

* Why

sudo apt install kwartz-client

...

(system reboot)

...

* check

ls -alh /etc/pam.d/

...

common-account   <--- changed 1
common-auth      <--- changed 2
common-password  <--- changed 3
common-session   <--- canged 4
common-session-noninteractive   <---changed 5
cron
cups
....

* fix

remove pam with ldap edited file

remove all ldap module session

change 1,2 order