Since launchpad isn't willing to let me attach the files, I'm posting them as a comment.....
root@charion:/etc/lightdm# ls -la total 28 drwxr-xr-x 3 root root 4096 Nov 20 23:16 . drwxr-xr-x 185 root root 12288 Nov 21 11:57 .. drwxr-xr-x 2 root root 4096 Jul 17 00:12 lightdm.conf.d lrwxrwxrwx 1 root root 55 Mai 30 10:38 lightdm-gtk-greeter.conf -> /etc/alternatives/lightdm-gtk-greeter-config-derivative -rw-r--r-- 1 root root 1317 Mär 13 2014 lightdm-gtk-greeter-ubuntu.conf -rw-r--r-- 1 root root 452 Jun 5 22:52 users.conf root@charion:/etc/lightdm# ls -la lightdm.conf.d total 8 drwxr-xr-x 2 root root 4096 Jul 17 00:12 . drwxr-xr-x 3 root root 4096 Nov 20 23:16 .. root@charion:/etc/lightdm# root@charion:/etc/lightdm# ls -la /etc/alternatives/lightdm-gtk-greeter-config-derivative lrwxrwxrwx 1 root root 53 Mai 30 10:38 /etc/alternatives/lightdm-gtk-greeter-config-derivative -> /etc/xdg/xdg-xubuntu/lightdm/lightdm-gtk-greeter.conf root@charion:/etc/lightdm# ls -la /etc/xdg/xdg-xubuntu/lightdm/lightdm-gtk-greeter.conf -rw-r--r-- 1 root root 2224 Aug 27 01:21 /etc/xdg/xdg-xubuntu/lightdm/lightdm-gtk-greeter.conf root@charion:/etc/lightdm# cat /etc/xdg/xdg-xubuntu/lightdm/lightdm-gtk-greeter.conf # # background = Background file to use, either an image path or a color (e.g. #772953) # active-monitor = Monitor to display greeter window (name or number). Use #cursor value to display greeter at monitor with cursor. # user-background = Display user background (if available), true or false. true by default. # theme-name = GTK+ theme to use # icon-theme-name = Icon theme to use # font-name = Font to use # xft-antialias = Whether to antialias Xft fonts (true or false) # xft-dpi = Resolution for Xft in dots per inch (e.g. 96) # xft-hintstyle = What degree of hinting to use (none, slight, medium, or hintfull) # xft-rgba = Type of subpixel antialiasing (none, rgb, bgr, vrgb or vbgr) # show-indicators = semi-colon ";" separated list of allowed indicator modules. Built-in indicators include "~a11y", "~language", "~session", "~power". Unity indicators can be represented by short name (e.g. "sound", "power"), service file name, or absolute path # show-clock (true or false) # clock-format = strftime-format string, e.g. %H:%M # keyboard = command to launch on-screen keyboard (e.g. onboard) # reader = command to launch screen reader (e.g. orca) # a11y-states = states of accessibility features: "name" - save state on exit, "-name" - disabled at start (default value for unlisted), "+name" - enabled at start. Allowed names: contrast, font, keyboard, reader. # position = main window position: x y # default-user-image = Image used as default user icon, path or #icon-name # hide-user-image = true|false, false by default # screensaver-timeout = Timeout (in seconds) until the screen blanks when the greeter is called as lockscreen # # Template for monitor configuration: # [monitor: name] # background = overrides default value # user-background = overrides default value # laptop = true|false, false by default. Marks monitor as laptop display. # [greeter] background=/lib/plymouth/themes/xubuntu-logo/wallpaper.png theme-name=Greybird icon-theme-name=elementary-xfce-dark font-name=Droid Sans 10 xft-antialias=true xft-dpi=96 xft-hintstyle=slight xft-rgba=rgb show-indicators=~host;~spacer;~session;~language;~a11y;~clock;~power; show-clock=true clock-format=%d %b, %H:%M keyboard=onboard screensaver-timeout=60 ----------------------------------------------------------------------------------------------------- -rw------- 1 root root 276 Nov 21 11:57 x-1-greeter.log -rw------- 1 root root 1130 Nov 21 11:57 x-1.log -rw------- 1 root root 11812 Nov 21 11:57 lightdm.log --------------------------------------------------------------------------------- x-1-greeter.log ** (lightdm-gtk-greeter:1119): WARNING **: Failed to load user image: Failed to open file '/home/neuffer/.face': No such file or directory (lightdm-gtk-greeter:1119): Gdk-WARNING **: lightdm-gtk-greeter: Fatal IO error 11 (Resource temporarily unavailable) on X server :1. ---------------------------------------------------------------------------------- x-1.log X.Org X Server 1.16.1.901 (1.16.2 RC 1) Release Date: 2014-11-02 X Protocol Version 11, Revision 0 Build Operating System: Linux 3.2.0-54-generic x86_64 Ubuntu Current Operating System: Linux charion 3.16.0-25-generic #33-Ubuntu SMP Tue Nov 4 12:06:54 UTC 2014 x86_64 Kernel command line: BOOT_IMAGE=/vmlinuz-3.16.0-25-generic root=UUID=c72e0d8e-4822-45c8-b95f-6e13971940d3 ro nomodeset allow-discards root_trim=yes nomdmonddf nomdmonisw crashkernel=384M-:128M nogpumanager Build Date: 05 November 2014 02:49:26PM xorg-server 2:1.16.1.901-1ubuntu1 (For technical support please see http://www.ubuntu.com/support) Current version of pixman: 0.32.4 Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. Markers: (--) probed, (**) from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. (==) Log file: "/var/log/Xorg.1.log", Time: Fri Nov 21 02:29:25 2014 (==) Using system config directory "/usr/share/X11/xorg.conf.d" (EE) Server terminated successfully (0). Closing log file. root@charion:/var/log/lightdm# ----------------------------------------------------------------------------------------------------- lightdm.log [+0.00s] DEBUG: Logging to /var/log/lightdm/lightdm.log [+0.00s] DEBUG: Starting Light Display Manager 1.13.0, UID=0 PID=1774 [+0.00s] DEBUG: Loading configuration dirs from /usr/share/lightdm/lightdm.conf.d [+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/50-greeter-wrapper.conf [+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/50-guest-wrapper.conf [+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/50-xserver-command.conf [+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/60-lightdm-gtk-greeter.conf [+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/60-xubuntu.conf [+0.00s] DEBUG: Loading configuration dirs from /usr/local/share/lightdm/lightdm.conf.d [+0.00s] DEBUG: Loading configuration dirs from /etc/xdg/lightdm/lightdm.conf.d [+0.00s] DEBUG: Loading configuration from /etc/lightdm/lightdm.conf [+0.00s] DEBUG: Using D-Bus name org.freedesktop.DisplayManager [+0.00s] DEBUG: Registered seat module xlocal [+0.00s] DEBUG: Registered seat module xremote [+0.00s] DEBUG: Registered seat module unity [+0.00s] DEBUG: Monitoring logind for seats [+0.00s] DEBUG: New seat added from logind: seat0 [+0.00s] DEBUG: Loading properties from config section SeatDefaults [+0.00s] DEBUG: Seat seat0: Starting [+0.00s] DEBUG: Seat seat0: Creating greeter session [+0.00s] DEBUG: Seat seat0: Creating display server of type x [+0.01s] DEBUG: Deactivating Plymouth [+0.03s] DEBUG: Using VT 7 [+0.03s] DEBUG: Seat seat0: Starting local X display on VT 7 [+0.03s] DEBUG: DisplayServer x-0: Logging to /var/log/lightdm/x-0.log [+0.03s] DEBUG: DisplayServer x-0: Writing X server authority to /var/run/lightdm/root/:0 [+0.03s] DEBUG: DisplayServer x-0: Launching X Server [+0.03s] DEBUG: Launching process 1880: /usr/bin/X -core :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch [+0.03s] DEBUG: DisplayServer x-0: Waiting for ready signal from X server :0 [+0.03s] DEBUG: Acquired bus name org.freedesktop.DisplayManager [+0.03s] DEBUG: Registering seat with bus path /org/freedesktop/DisplayManager/Seat0 [+0.06s] DEBUG: Loading users from org.freedesktop.Accounts [+0.06s] DEBUG: User /org/freedesktop/Accounts/User1000 added [+2.79s] DEBUG: Got signal 10 from process 1880 [+2.79s] DEBUG: DisplayServer x-0: Got signal from X server :0 [+2.79s] DEBUG: DisplayServer x-0: Connecting to XServer :0 [+2.79s] DEBUG: Quitting Plymouth; retaining splash [+2.81s] DEBUG: Seat seat0: Display server ready, starting session authentication [+2.82s] DEBUG: Session pid=3385: Started with service 'lightdm-greeter', username 'lightdm' [+2.83s] DEBUG: Session pid=3385: Authentication complete with return value 0: Success [+2.83s] DEBUG: Seat seat0: Session authenticated, running command [+2.83s] DEBUG: Session pid=3385: Running command /usr/lib/lightdm/lightdm-greeter-session /usr/sbin/lightdm-gtk-greeter [+2.83s] DEBUG: Creating shared data directory /var/lib/lightdm-data/lightdm [+2.83s] DEBUG: Session pid=3385: Logging to /var/log/lightdm/x-0-greeter.log [+2.85s] DEBUG: Activating VT 7 [+2.85s] DEBUG: Activating login1 session c1 [+2.97s] DEBUG: Session pid=3385: Greeter connected version=1.13.0 resettable=false [+3.31s] DEBUG: Session pid=3385: Greeter start authentication for neuffer [+3.31s] DEBUG: Session pid=3601: Started with service 'lightdm', username 'neuffer' [+3.32s] DEBUG: Session pid=3601: Got 1 message(s) from PAM [+3.32s] DEBUG: Session pid=3385: Prompt greeter with 1 message(s) [+10.34s] DEBUG: Session pid=3385: Continue authentication [+10.36s] DEBUG: Session pid=3601: Authentication complete with return value 0: Success [+10.36s] DEBUG: Session pid=3385: Authenticate result for user neuffer: Success [+10.36s] DEBUG: Session pid=3385: User neuffer authorized [+10.36s] DEBUG: Session pid=3385: Greeter sets language en_US [+10.41s] DEBUG: Session pid=3385: Greeter requests session xubuntu [+10.41s] DEBUG: Seat seat0: Stopping greeter; display server will be re-used for user session [+10.41s] DEBUG: Session pid=3385: Sending SIGTERM [+10.42s] DEBUG: Session pid=3385: Greeter closed communication channel [+10.42s] DEBUG: Session pid=3385: Exited with return value 0 [+10.42s] DEBUG: Seat seat0: Session stopped [+10.42s] DEBUG: Seat seat0: Greeter stopped, running session [+10.42s] DEBUG: Registering session with bus path /org/freedesktop/DisplayManager/Session0 [+10.42s] DEBUG: Session pid=3601: Running command /usr/sbin/lightdm-session startxfce4 [+10.42s] DEBUG: Creating shared data directory /var/lib/lightdm-data/neuffer [+10.42s] DEBUG: Session pid=3601: Logging to .xsession-errors [+10.43s] DEBUG: Activating VT 7 [+10.43s] DEBUG: Activating login1 session c2 [+1062.05s] DEBUG: Seat seat0: Locking [+1062.05s] DEBUG: Seat seat0: Creating greeter session [+1062.05s] DEBUG: Seat seat0: Creating display server of type x [+1062.05s] DEBUG: Using VT 8 [+1062.05s] DEBUG: Seat seat0: Starting local X display on VT 8 [+1062.05s] DEBUG: DisplayServer x-1: Logging to /var/log/lightdm/x-1.log [+1062.05s] DEBUG: DisplayServer x-1: Writing X server authority to /var/run/lightdm/root/:1 [+1062.05s] DEBUG: DisplayServer x-1: Launching X Server [+1062.05s] DEBUG: Launching process 8330: /usr/bin/X -core :1 -seat seat0 -auth /var/run/lightdm/root/:1 -nolisten tcp vt8 -novtswitch [+1062.05s] DEBUG: DisplayServer x-1: Waiting for ready signal from X server :1 [+1065.58s] DEBUG: Got signal 10 from process 8330 [+1065.58s] DEBUG: DisplayServer x-1: Got signal from X server :1 [+1065.58s] DEBUG: DisplayServer x-1: Connecting to XServer :1 [+1065.58s] DEBUG: Seat seat0: Display server ready, starting session authentication [+1065.58s] DEBUG: Session pid=8335: Started with service 'lightdm-greeter', username 'lightdm' [+1065.59s] DEBUG: Session pid=8335: Authentication complete with return value 0: Success [+1065.59s] DEBUG: Seat seat0: Session authenticated, running command [+1065.59s] DEBUG: Session pid=8335: Running command /usr/lib/lightdm/lightdm-greeter-session /usr/sbin/lightdm-gtk-greeter [+1065.59s] DEBUG: Creating shared data directory /var/lib/lightdm-data/lightdm [+1065.59s] DEBUG: Session pid=8335: Logging to /var/log/lightdm/x-1-greeter.log [+1065.60s] DEBUG: Activating VT 8 [+1065.60s] DEBUG: Locking login1 session c2 [+1065.60s] DEBUG: Activating login1 session c3 [+1065.63s] DEBUG: Session pid=8335: Greeter connected version=1.13.0 resettable=false [+1065.87s] DEBUG: Session pid=8335: Greeter start authentication for neuffer [+1065.87s] DEBUG: Session pid=8397: Started with service 'lightdm', username 'neuffer' [+1065.87s] DEBUG: Session pid=8397: Got 1 message(s) from PAM [+1065.87s] DEBUG: Session pid=8335: Prompt greeter with 1 message(s) [+10098.25s] DEBUG: Session pid=8335: Continue authentication [+10098.31s] DEBUG: Session pid=8397: Authentication complete with return value 0: Success [+10098.31s] DEBUG: Session pid=8335: Authenticate result for user neuffer: Success [+10098.31s] DEBUG: Session pid=8335: User neuffer authorized [+10098.32s] DEBUG: Session pid=8335: Greeter sets language en_US [+10098.39s] DEBUG: Session pid=8335: Greeter requests session xubuntu [+10098.39s] DEBUG: Seat seat0: Returning to existing user session neuffer [+10098.39s] DEBUG: Unlocking login1 session c2 [+10098.39s] DEBUG: Activating VT 7 [+10098.39s] WARNING: Error using VT_WAITACTIVE 7 on /dev/console: Interrupted system call [+10098.39s] DEBUG: Seat seat0: Stopping greeter [+10098.39s] DEBUG: Session pid=8335: Sending SIGTERM [+10098.39s] DEBUG: Activating login1 session c2 [+10098.39s] DEBUG: Session pid=8397: Exited with return value 0 [+10098.39s] DEBUG: Seat seat0: Session stopped [+10098.40s] DEBUG: Session pid=8335: Exited with return value 0 [+10098.40s] DEBUG: Seat seat0: Session stopped [+10098.40s] DEBUG: Seat seat0: Stopping display server, no sessions require it [+10098.40s] DEBUG: Sending signal 15 to process 8330 [+10099.47s] DEBUG: Process 8330 exited with return value 0 [+10099.47s] DEBUG: DisplayServer x-1: X server stopped [+10099.47s] DEBUG: Releasing VT 8 [+10099.47s] DEBUG: DisplayServer x-1: Removing X server authority /var/run/lightdm/root/:1 [+10099.47s] DEBUG: Seat seat0: Display server stopped [+11483.03s] DEBUG: Seat seat0: Locking [+11483.03s] DEBUG: Seat seat0: Creating greeter session [+11483.03s] DEBUG: Seat seat0: Creating display server of type x [+11483.03s] DEBUG: Using VT 8 [+11483.03s] DEBUG: Seat seat0: Starting local X display on VT 8 [+11483.03s] DEBUG: DisplayServer x-1: Logging to /var/log/lightdm/x-1.log [+11483.03s] DEBUG: DisplayServer x-1: Writing X server authority to /var/run/lightdm/root/:1 [+11483.03s] DEBUG: DisplayServer x-1: Launching X Server [+11483.04s] DEBUG: Launching process 1093: /usr/bin/X -core :1 -seat seat0 -auth /var/run/lightdm/root/:1 -nolisten tcp vt8 -novtswitch [+11483.04s] DEBUG: DisplayServer x-1: Waiting for ready signal from X server :1 [+11486.74s] DEBUG: Got signal 10 from process 1093 [+11486.74s] DEBUG: DisplayServer x-1: Got signal from X server :1 [+11486.74s] DEBUG: DisplayServer x-1: Connecting to XServer :1 [+11486.74s] DEBUG: Seat seat0: Display server ready, starting session authentication [+11486.74s] DEBUG: Session pid=1098: Started with service 'lightdm-greeter', username 'lightdm' [+11486.76s] DEBUG: Session pid=1098: Authentication complete with return value 0: Success [+11486.76s] DEBUG: Seat seat0: Session authenticated, running command [+11486.76s] DEBUG: Session pid=1098: Running command /usr/lib/lightdm/lightdm-greeter-session /usr/sbin/lightdm-gtk-greeter [+11486.76s] DEBUG: Creating shared data directory /var/lib/lightdm-data/lightdm [+11486.76s] DEBUG: Session pid=1098: Logging to /var/log/lightdm/x-1-greeter.log [+11486.77s] DEBUG: Activating VT 8 [+11486.77s] DEBUG: Locking login1 session c2 [+11486.77s] DEBUG: Activating login1 session c4 [+11486.79s] DEBUG: Session pid=1098: Greeter connected version=1.13.0 resettable=false [+11487.04s] DEBUG: Session pid=1098: Greeter start authentication for neuffer [+11487.04s] DEBUG: Session pid=1163: Started with service 'lightdm', username 'neuffer' [+11487.04s] DEBUG: Session pid=1163: Got 1 message(s) from PAM [+11487.04s] DEBUG: Session pid=1098: Prompt greeter with 1 message(s) [+45547.62s] DEBUG: Session pid=1098: Continue authentication [+45547.68s] DEBUG: Session pid=1163: Authentication complete with return value 0: Success [+45547.68s] DEBUG: Session pid=1098: Authenticate result for user neuffer: Success [+45547.68s] DEBUG: Session pid=1098: User neuffer authorized [+45547.68s] DEBUG: Session pid=1098: Greeter sets language en_US [+45547.73s] DEBUG: Session pid=1098: Greeter requests session xubuntu [+45547.73s] DEBUG: Seat seat0: Returning to existing user session neuffer [+45547.73s] DEBUG: Unlocking login1 session c2 [+45547.73s] DEBUG: Activating VT 7 [+45547.73s] WARNING: Error using VT_WAITACTIVE 7 on /dev/console: Interrupted system call [+45547.73s] DEBUG: Seat seat0: Stopping greeter [+45547.73s] DEBUG: Session pid=1098: Sending SIGTERM [+45547.73s] DEBUG: Activating login1 session c2 [+45547.73s] DEBUG: Session pid=1163: Exited with return value 0 [+45547.73s] DEBUG: Seat seat0: Session stopped [+45547.74s] DEBUG: Session pid=1098: Exited with return value 0 [+45547.74s] DEBUG: Seat seat0: Session stopped [+45547.74s] DEBUG: Seat seat0: Stopping display server, no sessions require it [+45547.74s] DEBUG: Sending signal 15 to process 1093 [+45548.98s] DEBUG: Process 1093 exited with return value 0 [+45548.98s] DEBUG: DisplayServer x-1: X server stopped [+45548.98s] DEBUG: Releasing VT 8 [+45548.98s] DEBUG: DisplayServer x-1: Removing X server authority /var/run/lightdm/root/:1 [+45548.98s] DEBUG: Seat seat0: Display server stopped -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1394639 Title: lightdm fails to start with 3 connected displays but works 2 displays To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm-gtk-greeter/+bug/1394639/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs