------- Comment From [email protected] 2015-05-05 05:04 EDT-------
A few more thoughts:  The situation may be more complicated on PowerKVM due 
there being many ways to create the console device in the domain file.  What I 
mean is: it's possible there is some domain configuration that makes 14.04 work 
as-is, and I just haven't seen it.  The bug I just worked on had a 
configuration like this, with no "video" or "graphics" stanza:

<serial type='pty'>
<source path='/dev/pts/4'/>
<target type='isa-serial' port='0'/>
<alias name='serial0'/>
<address type='spapr-vio' reg='0x30001000'/>
</serial>
<console type='pty' tty='/dev/pts/4'>
<source path='/dev/pts/4'/>
<target type='serial' port='0'/>
<alias name='serial0'/>
<address type='spapr-vio' reg='0x30001000'/>
</console>

Honestly, I'm not even clear how the console gets mapped to /dev/hvc0 on
PowerKVM.  On x86 KVM a similar-looking config maps the console to
/dev/ttyS0.  But in all cases, the device can be gleaned from
/proc/consoles.

And of course, I'm considering only what is seen over the text console
accessed by "virsh console".  There are additional ttys mapped to the
video console, and that's something that's also a bit different between
x86 and Power..

Anyway, without going into more detail that may not be relevant:  I'd
like to understand how hvc0.conf is created, why it's not being created
in some cases, and if ensuring it is created might just be the simple
fix.

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https://bugs.launchpad.net/bugs/1391919

Title:
  ISST-KVM:Ubuntu14.04: guest console not accessible but ssh and ping
  works fine

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