I suffer the same issue.
------------------------------------------------------
------------------------------------------------------
Distributor ID: Ubuntu
Description:    Ubuntu 14.04 LTS
Release:        14.04
Package: lightdm 1.10.1-0ubuntu1
Greeter: unity-greeter 14.04.10-0ubuntu1
Uname: Linux 3.13.0-24-generic i686
Architecture: i686
CurrentDesktop: Mate
AlternativeDesktop: Unity
------------------------------------------------------
/etc/lightdm/lightdm.conf

[SeatDefaults]
user-session=true
greeter-session=unity-greeter
allow-guest = false
greeter-hide-users = true
greeter-show-manual-login = true
------------------------------------------------------
/usr/share/xsessions/lightdm-xsession.desktop

Exec=mate-session
------------------------------------------------------
/var/log/auth.log

lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" 
not met by user "tester1"
lightdm: pam_unix(lightdm:auth): authentication failure; logname= uid=0 euid=0 
tty=:0 ruser= rhost=  user=tester1
lightdm: pam_winbind(lightdm:auth): getting password (0x00000388)
lightdm: pam_winbind(lightdm:auth): pam_get_item returned a password
lightdm: pam_winbind(lightdm:auth): user 'stoledo' granted access
<< and nothing more logged :-\ >>
------------------------------------------------------
/var/log/lightdm/lightdm.log

[+71.88s] DEBUG: Session pid=4209: Continue authentication
[+71.90s] DEBUG: Session pid=4685: Got 1 message(s) from PAM
[+71.90s] DEBUG: Session pid=4209: Prompt greeter with 1 message(s)
[+76.41s] DEBUG: Session pid=4209: Continue authentication
[+76.73s] DEBUG: Session pid=4685: Authentication complete with return value 0: 
Success
[+76.73s] DEBUG: Session pid=4209: Authenticate result for user tester1: Success
[+76.73s] DEBUG: Session pid=4209: User tester1 authorized
[+76.73s] DEBUG: Session pid=4209: Greeter requests default session
[+76.73s] DEBUG: Seat: Failed to find session configuration true
[+76.73s] DEBUG: Seat: Can't find session 'true '
[+76.73s] DEBUG: Session pid=4209: Greeter start authentication
[+76.74s] DEBUG: Session pid=4735: Started with service 'lightdm', username 
'(null)'
[+76.74s] DEBUG: Session pid=4685: Exited with return value 0

-- 
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/1312526

Title:
  lightdm fails to start session unless user selects session

Status in “lightdm” package in Ubuntu:
  Confirmed

Bug description:
  I install using preseed files, and clobber a bit of /etc to configure
  ubuntu to be suitable for users to login with network credentials.  I
  use pam to make a home directory when users login with network
  credentials.

  On first boot, logging into the VTs works fine but I cannot log into
  the lightdm dislpay manager.  If I type my username and password
  right, I get a "Failed to start session" message and get bounced back
  to the start of the login process.

  If, however, I click one of the session types, e.g. 'ubuntu' or
  'fluxbox', then I can log in.  (I've tried uninstalling fluxbox, this
  doesn't seem to help).  At which point I can login, which I believe
  works until I reboot the machine.  (I will test this shortly).

  If I install the lightdm-gtk-greeter package then I do not encounter
  this bug.  Instead, I am automatically logged into the alphabetically
  first session type (at least, if I've got fluxbox available vs. either
  ubuntu or xfce, that seems to be what I get, if only ubuntu is install
  I get an ubunut session by default so I assume the preference is
  alphabetical).

  It does not seem to matter if I specify a 
  user-session=something
  (I have also tried not setting user-session at all)

  in lightdm.conf (well, I haven't tried it with the gtk-greeter, but it
  doesn't matter with the unity greeter).

  I've tried all of the other lightdm-greeter packages, and lightdm-
  greeter-gtk is the only one that does not suffer from this bug.

  the most relvant message in the logs I can find is:

  DEBUG: Seat: Failed to find session configuration true
  Seat: Can't find session 'true'

  What I would expect to happen is to get some default session; getting
  the alphabetically first session is kind-of/sort-of reasonable.  Total
  failure is not.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: lightdm 1.10.0-0ubuntu3
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  NonfreeKernelModules: openafs
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Thu Apr 24 22:08:08 2014
  LightdmConfig:
   [SeatDefaults]
   user-session=true
   greeter-hide-users=true
   greeter-allow-guest=false
   session-setup-script=/bin/sh -l /etc/profile
  SourcePackage: lightdm
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1312526/+subscriptions

-- 
Mailing list: https://launchpad.net/~desktop-packages
Post to     : desktop-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~desktop-packages
More help   : https://help.launchpad.net/ListHelp

Reply via email to