Same here. "dpkg-reconfigure lightdm" does not help out. Lightdm seems to be started, but then is terminated because of "respawning to fast".
lightdm log: [+0.00s] DEBUG: Logging to /var/log/lightdm/lightdm.log [+0.00s] DEBUG: Starting Light Display Manager 1.22.0, UID=0 PID=2079 [+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-disable-guest.conf [+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/50-disable-log-backup.conf [+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.d/10-xubuntu.conf [+0.00s] DEBUG: [SeatDefaults] is now called [Seat:*], please update this configuration [+0.00s] DEBUG: Loading configuration from /etc/lightdm/lightdm.conf [+0.00s] DEBUG: [SeatDefaults] is now called [Seat:*], please update this configuration [+0.00s] DEBUG: Registered seat module local [+0.00s] DEBUG: Registered seat module xremote [+0.00s] DEBUG: Registered seat module unity [+0.00s] DEBUG: Using D-Bus name org.freedesktop.DisplayManager [+0.01s] DEBUG: Monitoring logind for seats [+0.01s] DEBUG: New seat added from logind: seat0 [+0.01s] DEBUG: Seat seat0: Loading properties from config section Seat:* [+0.01s] DEBUG: Seat seat0: Starting [+0.01s] DEBUG: Seat seat0: Creating greeter session [+0.01s] DEBUG: Seat seat0: Creating display server of type x [+0.02s] DEBUG: Using VT 7 [+0.02s] DEBUG: Seat seat0: Starting local X display on VT 7 [+0.02s] DEBUG: XServer 0: Logging to /var/log/lightdm/x-0.log [+0.02s] DEBUG: XServer 0: Writing X server authority to /var/run/lightdm/root/:0 [+0.02s] DEBUG: XServer 0: Launching X Server [+0.02s] DEBUG: Launching process 2087: /usr/bin/X -core :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch [+0.02s] DEBUG: XServer 0: Waiting for ready signal from X server :0 [+0.02s] DEBUG: Acquired bus name org.freedesktop.DisplayManager [+0.02s] DEBUG: Registering seat with bus path /org/freedesktop/DisplayManager/Seat0 [+0.02s] DEBUG: Loading users from org.freedesktop.Accounts [+0.73s] DEBUG: Got signal 10 from process 2087 [+0.73s] DEBUG: XServer 0: Got signal from X server :0 [+0.73s] DEBUG: XServer 0: Connecting to XServer :0 [+0.73s] DEBUG: Launching process 2215: /usr/share/lightdm_xrandr [+0.75s] DEBUG: Process 2215 exited with return value 1 [+0.75s] DEBUG: Seat seat0: Exit status of /usr/share/lightdm_xrandr: 1 [+0.75s] DEBUG: Seat seat0: Stopping display server due to failed setup script [+0.75s] DEBUG: Sending signal 15 to process 2087 [+1.17s] DEBUG: Process 2087 exited with return value 0 [+1.17s] DEBUG: XServer 0: X server stopped [+1.17s] DEBUG: Releasing VT 7 [+1.17s] DEBUG: XServer 0: Removing X server authority /var/run/lightdm/root/:0 [+1.17s] DEBUG: Seat seat0: Display server stopped [+1.17s] DEBUG: Seat seat0: Stopping session [+1.17s] DEBUG: Seat seat0: Session stopped [+1.17s] DEBUG: Seat seat0: Stopping; greeter display server failed to start [+1.17s] DEBUG: Seat seat0: Stopping [+1.17s] DEBUG: Seat seat0: Stopped [+1.17s] DEBUG: Required seat has stopped [+1.17s] DEBUG: Stopping display manager [+1.17s] DEBUG: Display manager stopped [+1.17s] DEBUG: Stopping daemon [+1.17s] DEBUG: Exiting with return value 1 And x-0.log: X.Org X Server 1.19.3 Release Date: 2017-03-15 X Protocol Version 11, Revision 0 Build Operating System: Linux 4.4.0-70-generic x86_64 Ubuntu Current Operating System: Linux nc404-muc 4.10.0-21-generic #23-Ubuntu SMP Fri Apr 28 16:14:22 UTC 2017 x86_64 Kernel command line: BOOT_IMAGE=/vmlinuz-4.10.0-21-generic root=/dev/mapper/xubuntu--vg-root ro quiet splash Build Date: 28 March 2017 06:16:52AM xorg-server 2:1.19.3-1ubuntu1 (For technical support please see http://www.ubuntu.com/support) Current version of pixman: 0.34.0 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.0.log", Time: Tue May 23 16:25:05 2017 (==) Using system config directory "/usr/share/X11/xorg.conf.d" VMware: No 3D enabled (0, Success). (II) Server terminated successfully (0). Closing log file. Looks a lot like lightdm terminates, then, since nothing running any more, x11-server terminates too. -- 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/1579557 Title: lightdm will not start Status in lightdm package in Ubuntu: Confirmed Bug description: systemctl status lightdm.service posts this: lightdm.service - Light Display Manager Loaded: loaded (/lib/systemd/system/lightdm.service; enabled; vendor preset: enabled) Drop-In: /lib/systemd/system/display-manager.service.d └─xdiagnose.conf Active: inactive (dead) (Result: exit-code) since sø. 2016-05-08 19:22:51 CEST; 43min ago Docs: man:lightdm(1) Process: 7709 ExecStart=/usr/sbin/lightdm (code=exited, status=1/FAILURE) Process: 7702 ExecStartPre=/bin/sh -c [ "$(basename $(cat /etc/X11/default-display-manager 2>/dev/null))" = "lightdm" ] (co Main PID: 7709 (code=exited, status=1/FAILURE) mai 08 19:22:51 rowena2 systemd[1]: lightdm.service: Service hold-off time over, scheduling restart. mai 08 19:22:51 rowena2 systemd[1]: Stopped Light Display Manager. mai 08 19:22:51 rowena2 systemd[1]: lightdm.service: Start request repeated too quickly. mai 08 19:22:51 rowena2 systemd[1]: Failed to start Light Display Manager. journalctl -xe posts this: mai 08 19:22:51 rowena2 systemd[1]: gpu-manager.service: Start request repeated too quickly. mai 08 19:22:51 rowena2 systemd[1]: Failed to start Detect the available GPUs and deal with any system changes. -- Subject: Unit gpu-manager.service has failed -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit gpu-manager.service has failed. -- -- The result is failed. mai 08 19:22:51 rowena2 systemd[1]: lightdm.service: Start request repeated too quickly. mai 08 19:22:51 rowena2 systemd[1]: Failed to start Light Display Manager. -- Subject: Unit lightdm.service has failed -- Defined-By: systemd -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel -- -- Unit lightdm.service has failed. ProblemType: Bug DistroRelease: Ubuntu 16.10 Package: lightdm 1.19.0-0ubuntu1 ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6 Uname: Linux 4.4.0-21-generic i686 ApportVersion: 2.20.1-0ubuntu3 Architecture: i386 Date: Sun May 8 19:24:25 2016 InstallationDate: Installed on 2012-04-22 (1476 days ago) InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta i386 (20120421) LightdmConfig: [SeatDefaults] user-session=ubuntu greeter-session=unity-greeter 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/1579557/+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
