"Light Display Manager" is offered as login option

Bug #1235785 reported by Doug McMahon on 2013-10-05
This bug affects 91 people
Affects Status Importance Assigned to Milestone
unity-greeter (Ubuntu)

Bug Description

Test case:
Fresh install of current image (10/05 here
Log in to guest account, log out
Light Display Manager is now a login option

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: unity-greeter 13.10.3-0ubuntu1
ProcVersionSignature: Ubuntu 3.11.0-11.17-generic 3.11.3
Uname: Linux 3.11.0-11-generic x86_64
ApportVersion: 2.12.5-0ubuntu1
Architecture: amd64
Date: Sat Oct 5 17:10:44 2013
InstallationDate: Installed on 2013-10-05 (0 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Beta amd64 (20131005)
MarkForUpload: True
SourcePackage: unity-greeter
UpgradeStatus: No upgrade log present (probably fresh install)

Doug McMahon (mc3man) wrote :
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in unity-greeter (Ubuntu):
status: New → Confirmed

Same thing here upon booting. "Light Display Manager" is not offered as an option when switching users though.

Adam Niedling (krychek) wrote :

What is the password for "Light Display Manager"? :)

Andreas Jonsson (sonofjon) wrote :

This only occurred on the first reboot after dist-upgrade. After a second reboot "Light Display Manager" do not appear as an option anymore.

André F. Rendeiro (afrendeiro) wrote :

Still appears on Ubuntu 13.10 upgraded from 13.04 after release: 17.10.13

Jan D (jandeyk-gmail) wrote :

Also seeing this user at the login screen, upgraded from 13.04. Rebooted, but it's still there...
If I click "switch user" after first logging in, the "Light Display Manager user disappears.

But its back after a reboot. :P

Glen Shrubsall (stinkeye) wrote :

Not seeing at first boot to login screen but appears at subsequent logouts.
13.10 64bit fresh install.

Just did an upgrade from 13.04 to 13.10 on 17 October 2013. "Light Display Manager" was offered as a login option, but I could still log into my other user accounts and get work done. The minimum-uid line in my /etc/lightdm/users.conf file was set to 500, and the uid of the "lightdm" user was properly set as less than 500. My /etc/lightdm/lightdm.conf file had no special instructions to make that user appear on the login screen. Adding "lightdm" to the "hidden-users" line in my /etc/lightdm/users.conf file corrected the problem for now.

Robin (r-ehl) on 2013-10-19
Changed in unity-greeter (Ubuntu):
status: Confirmed → Opinion
status: Opinion → Confirmed
ssy (somsaks) wrote :

I just noticed that, for some reason, the user has disappeared from the list. Possibly coming form one of the updates.

Matthias Niess (mniess) wrote :

I can confirm this bug is gone with todays round of updates. I don't know which one caused the fix but I'll attach a list of the updated packages and their versions.

Doug McMahon (mc3man) wrote :

Not gone as I orig. described

still on saucy.

Changed in unity-greeter (Ubuntu):
importance: Undecided → Low
status: Confirmed → Triaged
Josue Solis (supertoci-) wrote :

After I updated from 13.04 to 13.10, "Light Display Manager" user appears in login screen. I have added "lightdm" to hidden users (in /etc/lightdm/users.conf) but it is still appears in the login screen.

Appears for me both after an upgrade from 13.04 to 13.10 and on a fresh 13.10 install (although I do have a seperate partition for the /home directory which was not formatted during the fresh install)

bingorabbit (bingorabbit) wrote :

It's displayed after a reboot or an initial start up only for one time, when tried to relogin it disappears.

Adam Niedling (krychek) wrote :

I just discovered another aspect of this bug. If there are 3 users on your system: A, Light display manager and Z. If A is selected by default at the login screen then clicking on Z does nothing. First you have to click on LDM and only then you can click on user Z.

xatr0z (xatr0z) wrote :

Just upgraded from 13.04 to 13.10, installed all updates after upgrade, rebooted, and issue persists.
/etc/lightdm/users.conf: minimum-uid=500
id lightdm: uid=106(lightdm) gid=112(lightdm) groups=112(lightdm)

I installed Apache and PHP and 'Light Display Manager' appear as login option.

adutzu89 (verbanady) wrote :

Same thing on me Ubuntu 13.10 64bit.

I noticed today something that didn't caych my eye before.

The login option that is always default for me is my user session but it first show up 'Light Display Manager' and then quickly switches. My user session doesn't have then the Ubuntu logo which is used for switching between diferrent DE's. I have to cycle to the 'Light Display Manager' and back to my user to get this option.

william fischer (maxxjvx) wrote :

I had this issue when I upgraded from 13.04 to 13.10. After login, I noticed that the my shutdown option didn't do anything, although I would get a prompt upon pressing the power button. Anyway, I performed a clean install of 13.10 (home is on a seperate partition and was left intact) and the problem went way. My shutdown option in Unity was back again and all was good... Until today, the Light Display Manager login came back. I applied the work around of adding lightdm to the hidden user with no effect. I read Mateusz's post (#22) and can confirm that I am experiencing the same issue. That last thing I installed was openjdk-7-doc yesterday. Strange...

Robert Ancell (robert-ancell) wrote :

This is a symptom of bug 1242939

GwaiTsi (gwaitsi) wrote :

fyi / i have 3 different systems and 3 different outcomes.

- new install 13.10 on new machine, no issue

- clean upgrade from 13.04 to 13.10 where adding lightdm to hidden-users solved the problem

- bad upgrade 13.04 t 13.10 where 13.10 had to be re-installed but /home was changed to old raid drive.
  in this instance, adding lightdm to hidden-users only solves after a logout and coming back to the login screen. the initial after boot screen still shows the Light Display Manager user.

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