[Bug 44702] No error message when choice rejected

[cpbl]

Public bug reported:

Binary package hint: gdm

In gdmsetup, if a user is entered in the Security tab's options, there is no error message if gdmsetup rejects (and does not save) the selection --- for instance, if the user does not exist or has uid<minuid.
 Users ought to receive an error message before their work / choice is ignored.

** Affects: gdm (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

-- 
No error message when choice rejected
https://launchpad.net/bugs/44702