[Bug 1460508] [NEW] Ubuntu 14.04 LTS desktop can't login via GUI

[I Jun, Yu]

Public bug reported:

 Hi Team
   I upgraded my Ubuntu Desktop from 12.04 to 14.04 but I always block in login session via GUI. I can log in terminal. I checked the auth.log and found gnome-keyring-daemon shows "failed to unlock login keyring on startup". I did follow approach but still can't log in via GUI. Would you give me some advice.

[Tried Approach]
1. Reinstall gnome-keyring.
    - Result : Still can't log in
2. sudo chown -R $USER:$USER $HOME 
   - Result : Still can't log in
3. sudo update-manager -d 
    -Result : 
      error: XDG_RUNTIME_DIR not set in the environment.
      (update-manager:3835): Gtk-WARNING **: cannot open display: 

[Auth.log]
Jun  1 11:20:58 ubuntu sshd[2445]: Accepted password for ijunyu from 192.168.153.1 port 52781 ssh2
Jun  1 11:24:41 ubuntu gnome-keyring-daemon[2540]: failed to unlock login keyring on startup
Jun  1 11:24:41 ubuntu gnome-keyring-daemon[2540]: couldn't set environment variable in session: The name org.gnome.SessionManager was not provided by any .service files

Description:    Ubuntu 14.04.2 LTS
Release:        14.04

** Affects: pam-xdg-support (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "lightdm, syslog and auth.log"
   https://bugs.launchpad.net/bugs/1460508/+attachment/4407795/+files/dev_log.zip

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https://bugs.launchpad.net/bugs/1460508

Title:
  Ubuntu 14.04 LTS desktop can't login via GUI

Status in pam-xdg-support package in Ubuntu:
  New

Bug description:
   Hi Team
     I upgraded my Ubuntu Desktop from 12.04 to 14.04 but I always block in login session via GUI. I can log in terminal. I checked the auth.log and found gnome-keyring-daemon shows "failed to unlock login keyring on startup". I did follow approach but still can't log in via GUI. Would you give me some advice.

  [Tried Approach]
  1. Reinstall gnome-keyring.
      - Result : Still can't log in
  2. sudo chown -R $USER:$USER $HOME 
     - Result : Still can't log in
  3. sudo update-manager -d 
      -Result : 
        error: XDG_RUNTIME_DIR not set in the environment.
        (update-manager:3835): Gtk-WARNING **: cannot open display: 

  [Auth.log]
  Jun  1 11:20:58 ubuntu sshd[2445]: Accepted password for ijunyu from 192.168.153.1 port 52781 ssh2
  Jun  1 11:24:41 ubuntu gnome-keyring-daemon[2540]: failed to unlock login keyring on startup
  Jun  1 11:24:41 ubuntu gnome-keyring-daemon[2540]: couldn't set environment variable in session: The name org.gnome.SessionManager was not provided by any .service files

  Description:    Ubuntu 14.04.2 LTS
  Release:        14.04

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