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[Bug 1402149] Re: After update lightdm doesn't start

 

Found an error in Xorg.0.log:
-----------------------------------
[    28.605] (==) Log file: "/var/log/Xorg.0.log", Time: Sat Dec 13 17:09:02 2014
[    28.605] (==) Using config file: "/etc/X11/xorg.conf"
[    28.605] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[    28.605] Data incomplete in file /etc/X11/xorg.conf
        Undefined Screen "nvidia" referenced by ServerLayout "layout".
[    28.605] (EE) Problem parsing the config file
[    28.605] (EE) Error parsing the config file
[    28.605] (EE)
Fatal server error:
[    28.605] (EE) no screens found(EE)
[    28.605] (EE)
-----------------------------------

The xorg.conf file contains:
-----------------------------------
Section "ServerLayout"
    Identifier "layout"
    Screen 0 "nvidia"
    Inactive "intel"
EndSection

Section "Device"
    Identifier "intel"
    Driver "intel"
    BusID "PCI:0@0:2:0"
    Option "AccelMethod" "SNA"
EndSection

Section "Screen"
    Identifier "intel"
    Device "intel"
EndSection
-----------------------------------

The last 2 automatically saved xorg.conf files have the same content

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https://bugs.launchpad.net/bugs/1402149

Title:
  After update lightdm doesn't start

Status in lightdm package in Ubuntu:
  New

Bug description:
  Updateted 14 Dec 2014 Kubuntu 14.10 64Bit
  After reboot there is no gui.
  From dmesg I see an error in ligthdm

  This is the error reported:
  [   16.777309] init: lightdm main process (2534) terminated with status 1
  [   16.777317] init: lightdm main process ended, respawning
  [   22.866231] init: lightdm main process (2642) terminated with status 1
  [   22.866239] init: lightdm main process ended, respawning
  [   23.742651] systemd-logind[981]: Failed to start unit user@1000.service: Unknown unit: user@1000.service
  [   23.742688] systemd-logind[981]: Failed to start user service: Unknown unit: user@1000.service
  [   23.745586] systemd-logind[981]: New session c1 of user mirto.
  [   28.947789] init: lightdm main process (2895) terminated with status 1
  [   28.947797] init: lightdm respawning too fast, stopped
  [   28.951276] init: plymouth-ready (startup) main process (264) terminated with status 1
  [   33.762569] audit_printk_skb: 57 callbacks suppressed

  Trier another update this morning but nothing chenged

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: lightdm 1.12.2-0ubuntu1
  ProcVersionSignature: Ubuntu 3.16.0-28.38-generic 3.16.7-ckt1
  Uname: Linux 3.16.0-28-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  Date: Sat Dec 13 07:50:08 2014
  InstallationDate: Installed on 2014-11-24 (18 days ago)
  InstallationMedia: Kubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  LightdmGreeterLog:
   QInotifyFileSystemWatcherEngine::addPaths: inotify_add_watch failed: File o directory non esistente
   QFileSystemWatcher: failed to add paths: /var/lib/lightdm/.config/ibus/bus
   Bus::open: Can not get ibus-daemon's address. 
   IBusInputContext::createInputContext: no connection to ibus-daemon
  LightdmGreeterLogOld:
   QInotifyFileSystemWatcherEngine::addPaths: inotify_add_watch failed: File o directory non esistente
   QFileSystemWatcher: failed to add paths: /var/lib/lightdm/.config/ibus/bus
   Bus::open: Can not get ibus-daemon's address. 
   IBusInputContext::createInputContext: no connection to ibus-daemon
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=it_IT.UTF-8
   SHELL=/bin/bash
  SourcePackage: lightdm
  UpgradeStatus: No upgrade log present (probably fresh install)

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References