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[joneall <joneall@xxxxxxxxxxxxxxx>]

Bug still exists on Kubuntu 14.04, kernel vmlinuz-3.13.0-37-generic. Not
on every boot, but well over half of them. After boot, second CPU (core)
is not available.

l$ lscpu
Architecture:          x86_64
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                1
On-line CPU(s) list:   0
Thread(s) per core:    1
Core(s) per socket:    1
Socket(s):             1
...

$ dmesg | grep -i smp
...

[    0.122618] smpboot: CPU0: Intel Pentium(R) Dual-Core  CPU      E6700  @ 3.20GHz (fam: 06, model: 17, stepping: 0a)
[    0.124000] x86: Booting SMP configuration:
[   10.202969] smpboot: CPU1: Not responding
[   10.203005] smpboot: Total of 1 processors activated (6399.96 BogoMIPS)
[    0.124000] Kernel panic - not syncing: smp_callin: CPU1 started up but did not get a callout!

Having to repeat the boot several times in order to get both cores
running is to my mins a major bug!

-- 
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https://bugs.launchpad.net/bugs/823106

Title:
  Kernel panic - not syncing: smp_callin: CPU1 started up but did not
  get a callout on macbook running oneiric

Status in “linux” package in Ubuntu:
  Invalid

Bug description:
  Occurs on every boot. I expect no kernel panics on boot.

  """
   lsb_release -rd
  Description:	Ubuntu oneiric (development branch)
  Release:	11.10
  $ uname -a
  Linux ubuntu-macbook 3.0.0-7-generic #9-Ubuntu SMP Fri Jul 29 21:27:24 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

  """

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