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[Launchpad Bug Tracker <1291278@xxxxxxxxxxxxxxxxxx>]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: lightdm (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1291278

Title:
  Lightdm should wait until network is ready or time out

Status in lightdm package in Ubuntu:
  Confirmed

Bug description:
  Hi,

  refer to this Bug #1039151 to see the background.

  Lightdm should wait until we have Networking ready. If no network is available it should start immediately. This is necessary for all non local authentication methods like sssd etc. 
  If lightdm starts to early it may lead to failed login attempts until network is ready and for example M$-AD Server is available.

  These are the scripts i used to prevent lightdm from starting to
  early:

  Here are the skripts:

  /etc/init/networkdelay.conf :

  description "wait for IP to be there"

  #emits networkdelay

  start on (net-device-up IFACE!=lo
          and local-filesystems)

  #start on (((starting lightdm or starting kdm) or starting xdm) or starting lxdm)
  start on (starting lightdm
          or starting kdm
          or starting xdm
          or starting lxdm)

  task

  script
          exec /usr/sbin/network-ok
  end script


  
  /usr/sbin/network-ok:

  #!/bin/sh
  LOG=/tmp/network-diag
  rm $LOG
  #LOG=/dev/null
  #touch $LOG
  MAXWAIT=60
  T0=`cut -f1 -d. /proc/uptime`

  while (( test $(($T0+$MAXWAIT)) -gt $(cut -f1 -d. /proc/uptime) ))
  do
   date >> $LOG
   pidof lightdm >> $LOG
   #GW=`ip ro list default |head -1 |cut -d " " -f 3`
   GW=`ip -4 ro list 0.0.0.0/0 | cut -d " " -f 3`
  # ethtool eth0 >> $LOG
   test -n "$GW" && ping -c1 -w1 $GW >> $LOG 2>&1 && break
   sleep 1
  done

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