why does sudo lightdm start fail?

Robotics & Edge Computing Jetson & Embedded Systems Jetson TK1
1

$ sudo /etc/init.d/lightdm stop
[sudo] password for ubuntu:

  • Stopping X display manager lightdm [ OK ]
    $ sudo /etc/init.d/lightdm start
  • Starting X display manager lightdm [+0.00s] DEBUG: Logging to /var/log/lightdm/lightdm.log
    [+0.00s] DEBUG: Starting Light Display Manager 1.10.1, UID=0 PID=3089
    [+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-ubuntu.conf
    [+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/50-unity-greeter.conf
    [+0.00s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/50-xserver-command.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: Using Xephyr for X servers
    [+0.00s] DEBUG: Registered seat module xlocal
    [+0.00s] DEBUG: Registered seat module xremote
    [+0.00s] DEBUG: Registered seat module unity
    [+0.00s] DEBUG: Registered seat module surfaceflinger
    [+0.02s] DEBUG: Adding default seat
    [+0.02s] DEBUG: Seat: Starting
    [+0.02s] DEBUG: Seat: Creating user session
    [+0.02s] DEBUG: Loading users from org.freedesktop.Accounts
    [+0.02s] DEBUG: User /org/freedesktop/Accounts/User1000 added
    [+0.06s] DEBUG: Seat: Creating display server of type x
    [+0.07s] DEBUG: Using VT 7
    [+0.07s] DEBUG: Seat: Starting local X display on VT 7
    [+0.07s] DEBUG: DisplayServer x-0: Logging to /var/log/lightdm/x-0.log
    [+0.07s] DEBUG: DisplayServer x-0: Can’t launch X server Xephyr, not found in path
    [+0.07s] DEBUG: DisplayServer x-0: X server stopped
    [+0.07s] DEBUG: Releasing VT 7
    [+0.07s] DEBUG: Seat: Display server stopped
    [+0.07s] DEBUG: Seat: Can’t create display server for automatic login
    [+0.07s] DEBUG: Seat: Session stopped
    [+0.07s] DEBUG: Seat: Stopping display server, no sessions require it
    [+0.07s] DEBUG: Seat: Creating greeter session
    [+0.07s] DEBUG: Seat: Creating display server of type x
    [+0.07s] DEBUG: Using VT 7
    [+0.07s] DEBUG: Seat: Starting local X display on VT 7
    [+0.07s] DEBUG: DisplayServer x-0: Logging to /var/log/lightdm/x-0.log
    [+0.07s] DEBUG: DisplayServer x-0: Can’t launch X server Xephyr, not found in path
    [+0.07s] DEBUG: DisplayServer x-0: X server stopped
    [+0.07s] DEBUG: Releasing VT 7
    [+0.07s] DEBUG: Seat: Display server stopped
    [+0.07s] DEBUG: Seat: Can’t create display server for greeter
    [+0.07s] DEBUG: Seat: Session stopped
    [+0.07s] DEBUG: Seat: Stopping display server, no sessions require it
    [+0.07s] DEBUG: Seat: Stopping
    [+0.07s] DEBUG: Seat: Stopped
    [ OK ]
2

what happens if you try

sudo service lightdm <b>restart</b>

?

3

thanks for that, had been stopping with a different syntax which does not start or restart…