LightDM can not start occasionally

The Xorg.0.log generated at the same time when the start up of LightDM

Thank you for your bug report, could you copy the logs from the vt before restarting lightdm? is lightdm started but its vt just not activated (i.e can you ctrl-alt-f7 or f8 to it)?

Try modifying your /etc/init/lightdm.conf to the following (adding the sleep 2 line):

# LightDM - light Display Manager
#
# The display manager service manages the X servers running on the
# system, providing login and auto-login services
#
# based on gdm upstart script

description "LightDM Display Manager"
author "Robert Ancell "

start on ((filesystem
and runlevel [!06]
and started dbus
and (drm-device-added card0 PRIMARY_DEVICE_FOR_DISPLAY=1
or stopped udev-fallback-graphics))
or runlevel PREVLEVEL=S)

stop on runlevel [016]

emits login-session-start
emits desktop-session-start
emits desktop-shutdown

script
if [ -n "$UPSTART_EVENTS" ]
then
# Check kernel command-line for inhibitors, unless we are being called
# manually
for ARG in $(cat /proc/cmdline); do
if [ "$ARG" = "text" ]; then
plymouth quit || :
stop
exit 0
fi
done

[ ! -f /etc/X11/default-display-manager -o "$(cat /etc/X11/default-display-manager 2>/dev/null)" = "/usr/bin/lightdm" -o "$(cat /etc/X11/default-display-manager 2>/dev/null)" = "/usr/sbin/lightdm" ] || { stop; exit 0; }

if [ "$RUNLEVEL" = S -o "$RUNLEVEL" = 1 ]
then
# Single-user mode
plymouth quit || :
exit 0
fi
fi
sleep 2
exec lightdm
end script

post-stop script
if [ "$UPSTART_STOP_EVENTS" = runlevel ]; then
initctl emit desktop-shutdown
fi
end script

Hi,

I have added this as described and it seems to work perfectly.

Thank you.

Kindest Regards,
Richard.

Ubuntu 12.10

Add sleep 2 to config file doesn't work for me.

Please fix this annoying bug.
It's very frustrating when you want to show the powerful of linux and Ubuntu in particular to friends and the system doesn't start.

Kindest Regards,
Giuseppe