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[Richard Hansen <1259861@xxxxxxxxxxxxxxxxxx>]

I installed a vanilla 4.5 kernel, which has this debug logging change:

https://git.kernel.org/cgit/linux/kernel/git/stable/linux-
stable.git/commit/net/ipv4/ipconfig.c?id=09605cc12c07830659a19b266503795c511a2060

After booting with the dyndbg argument, the only new output is this:

[    1.079405] ipconfig:ip_auto_config:1417: IP-Config: Entered.

That line is printed before the delay.  There are no other new debug
lines from ipconfig.c.

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https://bugs.launchpad.net/bugs/1259861

Title:
  5-10 second delay in kernel boot

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  In Trusty I see a big delay while the kernel boots that I did not see back in Precise.
  Some people have been experiencing this in Saucy too, so I don't know exactly when it started happening.
  Excerpt from dmesg:
  [    3.740100] Switched to clocksource tsc
  [   14.208118] PM: Hibernation image not present or could not be loaded.
  [   14.208885] Freeing unused kernel memory: 864K (c19ac000 - c1a84000)

  The exact messages above don't matter, they are different on different boots or on different machines.
  It even happens with e.g. 
  $ sudo kvm -m 768 -cdrom trusty-desktop-i386.iso

  My current kernel is
  Linux server 3.12.0-7-generic #15-Ubuntu SMP Sun Dec 8 23:42:09 UTC 2013 i686 i686 i686 GNU/Linux
  ...but the exact version, maybe from 3.8 to 3.12+, shouldn't matter, just run `dmesg` yourself and check if there's a big delay there.

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