I can confirm that unity greeter fails if no user account is shown.
As a workaround you can set the following in /etc/lightdm/lightdm.conf:
[SeatDefaults]
greeter-hide-users=true
as this shows a username entry instead of a user list (which is probably
what you want anyway).
** Package changed: lightdm (Ubuntu) => unity-greeter (Ubuntu)
** Changed in: unity-greeter (Ubuntu)
Status: New => Triaged
** Changed in: unity-greeter (Ubuntu)
Importance: Undecided => Low
** Also affects: unity-greeter
Importance: Undecided
Status: New
** Changed in: unity-greeter
Status: New => Triaged
** Changed in: unity-greeter
Importance: Undecided => Low
** Summary changed:
- lightdm crashes/loops if guest disabled and no initial user
+ Crashes if no user account shown
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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to lightdm in Ubuntu.
https://bugs.launchpad.net/bugs/919298
Title:
Crashes if no user account shown
Status in Unity Greeter:
Triaged
Status in “unity-greeter” package in Ubuntu:
Triaged
Bug description:
I'm configuring a preseeded automated installation of Ubuntu 12.04.
Because in its final state the system will get all its users from the
local Active Directory domain I do not have an initial user created,
so in my preseed configuration file I have the line:
d-i passwd/make-user boolean false
My organisation's policies prohibit a guest account, so a
preseed/late_command edits /etc/lightdm/lightdm.conf to include the
line:
allow-guest=false
With this arrangement, when lightdm starts at boot time, it starts an
X server and displays a black screen with the mouse pointer in. This
screen disappears almost immediately. This is repeated 59 times,
making switching to another virtual console difficult.
lightdm should behave more sensibly when a local user is not
available.
To manage notifications about this bug go to:
https://bugs.launchpad.net/unity-greeter/+bug/919298/+subscriptions
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