how do I remove the last connected users from the lightdm greeter list
With gdm3, I was able to remove the last connected users from the list by removing the file '/var/log/ConsoleKit/history'
With lightdm, the last users appears even when :
- removing /var/log/ConsoleKit/history
- removing /var/lib/lightdm/.cache/unity-greeter/state
Where does lightdm store this list ?
Edit:
It seems like it's using the content from the last command. Then purging the content of the file /var/log/wtmp is sufficient to remove any previously connected user from the list :
# > /var/log/wtmp
But, after doing this, I have the unwanted side effect that users loging in via lightdm doesn't appears at all in this list.
I must say that I'm in a enterprise network environment using NIS.
Edit2: Well, it seems that lightdm uses wtmp to display recent network users list, but does not update it. So, lightdm will show a network user only if it logged in in another fashion (ssh, login), like I did on this computer before. cf:
- https://bugs.launchpad.net/lightdm/+bug/871070
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=648604
Edit3:
I just added the following line to the file /etc/pam.d/lightdm To force lightdm to store users in wtmp :
session optional pam_lastlog.so silent
Solution 1:
So, to remove last connected network users from the list, just purge the /var/log/wtmp file :
# > /var/log/wtmp
Besides, to make lightdm remember last connected network users, one can add the following line to the file /etc/pam.d/lightdm :
session optional pam_lastlog.so silent
Solution 2:
I set /etc/lightdm/lightdm.conf as following to make the greeter screen not show the user list. Need to manually type in your username and password.
[SeatDefaults]
greeter-session=unity-greeter
user-session=ubuntu
allow-guest=false
greeter-show-remote-login=false
greeter-hide-users=true
hide-users=true
Solution 3:
The last user to log in with lightdm is stored here:
/var/lib/lightdm/.cache/lightdm-gtk-greeter/state
Note the dot in .cache.
It is safe to simply delete the file.