[Bug 1244989] Re: LightDM won't load: Stopping startpar bridge for notification of upstart job start/stop

[Francesco Randi]

Same problem since yesterday:
I have an integrated (intel) and a discrete (radeon) graphic card, and it seems that the update "broke" just the integrated one. I'm running fine on the radeon one now..

Below an extract of /var/log/dpkg.log, regarding the updated packages
that could be related to the problem:

2014-02-23 16:36:58 upgrade xserver-common:all 2:1.14.3-3ubuntu2 2:1.14.5-1ubuntu2~saucy1
2014-02-23 16:36:59 upgrade xserver-xephyr:amd64 2:1.14.3-3ubuntu2 2:1.14.5-1ubuntu2~saucy1
2014-02-23 16:37:00 upgrade xserver-xorg-core:amd64 2:1.14.3-3ubuntu2 2:1.14.5-1ubuntu2~saucy1
2014-02-23 16:37:01 upgrade xserver-xorg-glamoregl:amd64 0.5.1-0ubuntu4 0.5.1-0ubuntu4.2

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https://bugs.launchpad.net/bugs/1244989

Title:
  LightDM won't load: Stopping startpar bridge for notification of
  upstart job start/stop

Status in “lightdm” package in Ubuntu:
  Confirmed
Status in “sysvinit” package in Ubuntu:
  Invalid

Bug description:
  Installed the Ubuntu 14.04 "Trusty Tahr" daily image (21-Oct-2013
  13:57) into Virtualbox 4.2.18 r88780 and it won't load LightDM, I
  switched to tty1 and I see the following message:

      Stopping startpar bridge for notification of upstart job
  start/stop

  On several lines alternating between `[start]` and `[stop]` messages
  at the end. If I use `sudo lightdm restart` it just brings up a blank
  screen. I didn't have this specific problem when I was running the
  Saucy development branch.

  When I try to use `sudo lightdm restart` I get the error:

      Failed to use bus name org.freedesktop.DisplayManager, do you have
  appropriate permissions?

  and I get a blank screen again.

  Guest:
  lightdm 1.8.2
  1851 MB of RAM

  Host:
  Pentium Dual-Core CPU E5200 @ 2.50GHz
  4GB (3.7GiB) DDR2 RAM + 1.8GiB Swap
  nVidia GeForce 7100 (512MB GRAM)

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