Only my user is shown on greeter, guest is not, my wife is not. This is a system I reinstalled from 12.04-i386 to 14.04-amd64, reformating all but /home.
Even a user created from Trusty won't show on greeter.
The only way these 3 can log in is from my own system menu switch user feature.
I dug a bit and discovered I have the ~new ?~ AccountService thing installed, so that all tricks I found around about lightdm are now out of scope.
(please change the text about unity-greeter tag saying lightdm is underlying)

  • accountsservice was also used in 12.04. I don't think the tricks are dead yet – muru Jul 27 '14 at 10:43
  • Well the problem is that I do not have any /etc/lightdm/lightdm.conf file from which I could remove allow-guest=false (or add allow-guest=true, in the case missing allow-guest= line wouldn't be enough to restore the default behaviour). More, I read this in the lonesome /etc/lightdm/users.conf: # # User accounts configuration # # NOTE: If you have AccountsService installed on your system, then LightDM will # use this instead and these settings will be ignored # # minimum-uid = Minimum UID required to be shown in greeter # hidden-users = Users that are ... – useful Jul 27 '14 at 11:42
  • That's because lightdm is using a more flexible way of handling configuration. Have a look at this directory: /usr/share/lightdm/lightdm.conf.d (see askubuntu.com/questions/451950/…) – muru Jul 27 '14 at 11:44

Own answer to own question:
This ~bug~ was supplied by myself: the workaround was to download my glasses from the shelf to see that white font of users name on the ~white~ greeter from usr/share/backgrounds/Foggy_Forest_by_Jake_Stewart.jpg I choose myself running dconf-editor as lightdm user, is simply of poor contrast....
Sorry for the noise.

  • Best. Bug. Ever. – Sparhawk Jul 27 '14 at 15:13
  • 1
    No bounty for this? At least for my own answer ;-) – useful Jul 29 '14 at 5:28

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