Originally introduced into the Ubuntu 13.10 (Saucy) configuration with
commit 301b4bb

commit 301b4bb24cf60f339643ffddbd630169e488adf2
Author: Leann Ogasawara <leann.ogasaw...@canonical.com>
Date:   Fri Mar 12 17:13:25 2010 -0800

    UBUNTU: rebase to v3.10-rc4
    Signed-off-by: Andy Whitcroft <a...@canonical.com>

$ git show 301b4bb | awk '/^\+\+\+/{FILE=$0} /^[-+]CONFIG_IP_PNP=/ {print FILE; 
+++ b/debian.master/config/config.common.ubuntu

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  5-10 second delay in kernel boot with kernel command line ip=

Status in linux package in Ubuntu:
Status in linux source package in Trusty:
Status in linux source package in Wily:
Status in linux source package in Xenial:

Bug description:
  In Trusty I see a big delay while the kernel boots that I did not see back in 
  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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