Ubuntu 13.04
Intel SSD
i7 4770S
Using the processor graphics with the default driver.

I got the black screen with a white mouse cursor about a quarter the
time on boot and finally discovered the machine wasn't broken/crappy by
pressing CTRL-ALT-F1 to see if tty1 would work (previously I would just
press reset when the black screen issue came up).

I tried the sleep workaround here and have had good results so far (I used a 1 
second delay):
http://www.webupd8.org/2013/01/ubuntu-lightdm-black-screen-when-using.html

Is there some way to detect the error state and present an error message
to the user instead of the black screen?  A fix would be better but it
would be nice if we could at least give a little feedback so users don't
assume Ubuntu is broken.

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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to lightdm in Ubuntu.
https://bugs.launchpad.net/bugs/969489

Title:
  lightdm tries (and fails) to start too early?

Status in Upstart:
  New
Status in “lightdm” package in Ubuntu:
  Confirmed

Bug description:
  Sometimes lightdm comes up fine.  Other times it appears to fail.
  x-0.log shows it tried to load 'nv' (rather than 'nvidia' which is
  what actually exists).  When I then log into console and 'start
  lightdm', it comes up fine (on :1).

  I've not had it come up ok today, so I don't know if, when it comes up
  fine, it starts on :0.  No idea if the lightdm.conf needs a change to
  'start on'clause, or if this is just a case of a bad shipped config
  file (for module 'nv').

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: lightdm 1.1.9-0ubuntu1
  ProcVersionSignature: Ubuntu 3.2.0-20.33-generic 3.2.12
  Uname: Linux 3.2.0-20-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.0-0ubuntu1
  Architecture: amd64
  Date: Fri Mar 30 13:40:27 2012
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 
(20120323)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: lightdm
  UpgradeStatus: No upgrade log present (probably fresh install)

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