** Changed in: linux (Ubuntu)
       Status: Incomplete => Confirmed

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https://bugs.launchpad.net/bugs/1365655

Title:
  ISST-KVM: R2-0: xmon disabled in Ubuntu

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  ---Problem Description---
  The Ubuntu kernels currently have xmon disabled. xmon is a standard debugging 
interface on power platforms and is expected to be compiled in to enable for 
debugging. Please enable CONFIG_XMON.
   
  ---uname output---
  Linux actg1 3.13.0-34-generic #60-Ubuntu SMP Wed Aug 13 15:45:54 UTC 2014 
ppc64le ppc64le ppc64le GNU/Linux
   
  Machine Type = 8247-22L 
    
  ---Steps to Reproduce---
  Run the following command: 
  echo 1 > /proc/sys/kernel/sysrq
  Try to invoke xmon by inputting ctrl + o, x
  System should drop into xmon, but the following message is printed instead: 
"[229073.090037] SysRq : This sysrq operation is disabled."
   
  14.10 is also the same:

  root@hatg5:~# grep XMON /boot/config-3.16.0-8-generic
  # CONFIG_XMON is not set
  root@hatg5:~# uname -a
  Linux hatg5 3.16.0-8-generic #13-Ubuntu SMP Wed Aug 13 17:11:23 UTC 2014 
ppc64le ppc64le ppc64le GNU/Linux

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