How to undo a command

[.Kencs]

I been having issues trying to open up the Login Screen Settings. Nothing happens after I click Validate. I was told to open Terminal and put this in:

sudo dpkg-reconfigure gdm

I then restarted, and now all I have is 'Automatic Login' and it doesnt give me my account or my wife's account, just logs in automatically. I can't change how it logs in as 1) I cant access login screen settings, and 2) as you can tell with past posts, I know nothing about Linux still.

I'm using Ubuntu 9.10

Please help...I need to undo the changes so I have the available login accounts at the beginning...

thanks

 

[memyselfandi]

Look in the daemon section of /etc/gdm/custom.conf

You may have AutomaticLoginEnable=true or TimedLoginEnable=true under [daemon] section of the file which can be set to false.

You'll need to restart gdm to take affect (probably the easiest way would be to reboot).

If that doesn't work then Google for how to enable automatic logins with gdm and look to disable what it says to enable.

 

[FirebarUK]

The option may also be somewhere in the control centre (similar to your control panel in Windows) under "Login". Not 100% on that, don't have a system handy to check with.

 

[WDN]

System > Administration > Login Screen. Click Unlock if required, and select the radio button "Show the screen for choosing who will login".