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[Dariusz Gadomski <1367241@xxxxxxxxxxxxxxxxxx>]

Thanks Martin for taking a look.

In my precise (12.04.5) install the default kernel is 3.13.0-32-generic, which is affected by the issue:
$ grep FB_VESA /boot/config-3.13.0-32-generic
CONFIG_FB_VESA=y

In fact initially this has been reported by a CTS customer for precise.

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https://bugs.launchpad.net/bugs/1367241

Title:
  Incorrect udev-fallback-graphics.conf

Status in “systemd” package in Ubuntu:
  Fix Committed
Status in “udev” package in Ubuntu:
  Invalid
Status in “udev” source package in Precise:
  Incomplete
Status in “systemd” source package in Trusty:
  Triaged
Status in “systemd” source package in Utopic:
  Fix Committed

Bug description:
  [Impact]

   * When setting up primary display driver fails an attempt to load vesafb
     module is undertaken. This fails since from 3.13.0-16.36 version
     vesafb is compiled in the kernel (so no actual modprobing is needed).
     This causes false alert in the log:
     "Starting load fallback graphic devices: [fail]"

  [Test Case]

   * Start Ubuntu unable to load primary graphics driver (the simplest way is to remove module responsible for the device).
   * Wait for loading graphics devices.
   * If the primary device module has failed to load, falling back to vesafb will be attempted.

  [Regression Potential]

   * Implemented by the bug reported.

   * Affects only the debian/ directory.

  [Other Info]
   
   * Original bug description:

  The udev-fallback-graphics.conf script tries to load vesafb module if
  PRIMARY_DEVICE_FOR_DISPLAY has not been set earlier.

  The problem is that from kernel version 3.13.0-16.36 vesafb is
  compiled in permanently into the kernel (CONFIG_FB_VESA=y), so
  whenever the fallback mode is triggered this script will FAIL
  confusing the users.

  Most probably this file is no longer needed (or it just be used to
  print informative message).

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