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[Xu Weihong <xuweihong.cn@xxxxxxxxx>]

I have checked auth.log  and found something interesting. When
everything is OK, the log looks like this

Jul 15 18:11:02 weihong-pc systemd-logind[870]: New seat seat0.
Jul 15 18:11:03 weihong-pc systemd-logind[870]: Watching system buttons on /dev/input/event1 (Power Button)
Jul 15 18:11:03 weihong-pc systemd-logind[870]: Watching system buttons on /dev/input/event10 (Video Bus)
Jul 15 18:11:03 weihong-pc systemd-logind[870]: Watching system buttons on /dev/input/event0 (Power Button)
Jul 15 18:11:05 weihong-pc lightdm: PAM unable to dlopen(pam_kwallet.so): /lib/security/pam_kwallet.so: cannot open shared object file: No such file or directory
Jul 15 18:11:05 weihong-pc lightdm: PAM adding faulty module: pam_kwallet.so
Jul 15 18:11:05 weihong-pc lightdm: pam_unix(lightdm-greeter:session): session opened for user lightdm by (uid=0)
Jul 15 18:11:05 weihong-pc systemd-logind[870]: New session c1 of user lightdm.
Jul 15 18:11:05 weihong-pc systemd-logind[870]: Linked /tmp/.X11-unix/X0 to /run/user/104/X11-display.
Jul 15 18:11:05 weihong-pc lightdm: pam_ck_connector(lightdm-greeter:session): nox11 mode, ignoring PAM_TTY :0
Jul 15 18:11:08 weihong-pc lightdm: PAM unable to dlopen(pam_kwallet.so): /lib/security/pam_kwallet.so: cannot open shared object file: No such file or directory
Jul 15 18:11:08 weihong-pc lightdm: PAM adding faulty module: pam_kwallet.so
Jul 15 18:11:08 weihong-pc lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "weihong"
Jul 15 18:11:08 weihong-pc dbus[754]: [system] Rejected send message, 7 matched rules; type="method_return", sender=":1.25" (uid=0 pid=1450 comm="/usr/sbin/dnsmasq --no-resolv --keep-in-foreground") interface="(unset)" member="(unset)" error name="(unset)" requested_reply="0" destination=":1.5" (uid=0 pid=939 comm="NetworkManager ")
Jul 15 18:11:12 weihong-pc lightdm: pam_unix(lightdm-greeter:session): session closed for user lightdm
Jul 15 18:11:12 weihong-pc lightdm: pam_unix(lightdm:session): session opened for user weihong by (uid=0)
Jul 15 18:11:12 weihong-pc systemd-logind[870]: New session c2 of user weihong.
Jul 15 18:11:12 weihong-pc systemd-logind[870]: Linked /tmp/.X11-unix/X0 to /run/user/1000/X11-display.
Jul 15 18:11:12 weihong-pc lightdm: pam_ck_connector(lightdm:session): nox11 mode, ignoring PAM_TTY :0
Jul 15 18:11:14 weihong-pc gnome-keyring-daemon[1622]: Gkm: using old keyring directory: /home/weihong/.gnome2/keyrings
Jul 15 18:11:14 weihong-pc gnome-keyring-daemon[1622]: Gkm: using old keyring directory: /home/weihong/.gnome2/keyrings
Jul 15 18:11:14 weihong-pc gnome-keyring-daemon[1622]: couldn't set environment variable in session: The name org.gnome.SessionManager was not provided by any .service files
Jul 15 18:11:15 weihong-pc polkitd(authority=local): Registered Authentication Agent for unix-session:c2 (system bus name :1.39 [/usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1], object path /org/gnome/PolicyKit1/AuthenticationAgent, locale en_US.UTF-8)
Jul 15 18:11:14 weihong-pc gnome-keyring-daemon[1622]: message repeated 2 times: [ couldn't set environment variable in session: The name org.gnome.SessionManager was not provided by any .service files]
Jul 15 18:11:51 weihong-pc gnome-keyring-daemon[1622]: keyring alias directory: /home/weihong/.gnome2/keyrings

After the upgrade, the log looks like:

Jul 18 18:11:55 weihong-pc systemd-logind[1176]: New seat seat0.
Jul 18 18:11:55 weihong-pc systemd-logind[1176]: Watching system buttons on /dev/input/event1 (Power Button)
Jul 18 18:11:55 weihong-pc systemd-logind[1176]: Watching system buttons on /dev/input/event4 (Video Bus)
Jul 18 18:11:55 weihong-pc systemd-logind[1176]: Watching system buttons on /dev/input/event0 (Power Button)
Jul 18 18:11:58 weihong-pc lightdm: PAM unable to dlopen(pam_kwallet.so): /lib/security/pam_kwallet.so: cannot open shared object file: No such file or directory
Jul 18 18:11:58 weihong-pc lightdm: PAM adding faulty module: pam_kwallet.so
Jul 18 18:11:58 weihong-pc lightdm: pam_unix(lightdm-greeter:session): session opened for user lightdm by (uid=0)
Jul 18 18:11:58 weihong-pc systemd-logind[1176]: New session c1 of user lightdm.
Jul 18 18:11:58 weihong-pc systemd-logind[1176]: Linked /tmp/.X11-unix/X0 to /run/user/104/X11-display.
Jul 18 18:11:58 weihong-pc lightdm: pam_ck_connector(lightdm-greeter:session): nox11 mode, ignoring PAM_TTY :0
Jul 18 18:12:03 weihong-pc lightdm: PAM unable to dlopen(pam_kwallet.so): /lib/security/pam_kwallet.so: cannot open shared object file: No such file or directory
Jul 18 18:12:03 weihong-pc lightdm: PAM adding faulty module: pam_kwallet.so
Jul 18 18:12:03 weihong-pc lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "weihong"
Jul 18 18:12:06 weihong-pc dbus[1061]: [system] Rejected send message, 7 matched rules; type="method_return", sender=":1.22" (uid=0 pid=1338 comm="/usr/sbin/dnsmasq --no-resolv --keep-in-foreground") interface="(unset)" member="(unset)" error name="(unset)" requested_reply="0" destination=":1.11" (uid=0 pid=1239 comm="NetworkManager ")
Jul 18 18:12:10 weihong-pc lightdm: pam_unix(lightdm-greeter:session): session closed for user lightdm
Jul 18 18:12:10 weihong-pc lightdm: pam_unix(lightdm:session): session opened for user weihong by (uid=0)
Jul 18 18:12:10 weihong-pc systemd-logind[1176]: New session c2 of user weihong.
Jul 18 18:12:10 weihong-pc systemd-logind[1176]: Linked /tmp/.X11-unix/X0 to /run/user/1000/X11-display.
Jul 18 18:12:10 weihong-pc lightdm: pam_ck_connector(lightdm:session): nox11 mode, ignoring PAM_TTY :0
Jul 18 18:13:22 weihong-pc systemd-logind[1176]: Failed to issue method call: Unknown unit: autovt@tty6.service
Jul 18 18:13:40 weihong-pc login[894]: pam_unix(login:session): session opened for user weihong by LOGIN(uid=0)
Jul 18 18:13:40 weihong-pc systemd-logind[1176]: New session c3 of user weihong.
Jul 18 18:13:46 weihong-pc sudo:  weihong : TTY=tty2 ; PWD=/home/weihong ; USER=root ; COMMAND=/sbin/reboot
Jul 18 18:13:46 weihong-pc sudo: pam_unix(sudo:session): session opened for user root by weihong(uid=0)
Jul 18 18:13:46 weihong-pc sudo: pam_unix(sudo:session): session closed for user root

It seems this problem have a correlation with systemd-logind, gnome-
keyring-daemon and polkitd. I hope these info do helps to this problem.

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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to lightdm in Ubuntu.
https://bugs.launchpad.net/bugs/1283826

Title:
  lightdm hangs after updates

Status in GDM: The Gnome Display Manager:
  New
Status in Light Display Manager:
  New
Status in “lightdm” package in Ubuntu:
  Confirmed

Bug description:
  I've updated today my Trusy Thar installation. I can't login to Unity,
  with my account, or a guest account. Lightdm hangs after password
  input, or after I click on the Guest account.

  Also, I used to auto-login. Now it greets me with the screen where I
  must input my password. After inputing it, lightdm hangs and I can't
  login.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: lightdm 1.9.8-0ubuntu1
  ProcVersionSignature: Ubuntu 3.13.0-12.32-generic 3.13.4
  Uname: Linux 3.13.0-12-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.13.2-0ubuntu5
  Architecture: amd64
  Date: Sun Feb 23 23:16:24 2014
  InstallationDate: Installed on 2014-01-25 (29 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64+mac (20140115)
  LightdmConfig:
   [SeatDefaults]
   autologin-guest=false
   autologin-user=cristi
   autologin-user-timeout=0
   autologin-session=lightdm-autologin
  SourcePackage: lightdm
  UpgradeStatus: No upgrade log present (probably fresh install)

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