On 12/27/2011 04:12 PM, MT Julianto wrote:
> The machine looks (sometimes) sleep, although it is always on, idle, no
> screensavers is running, and no network changes surroundings.  That's
> never happened before migrated, and never happened when connecting or
> neighbor machines in the office.
>
> Do you have any suggestions to get rid of it?  It is a bit annoying,
> although I always able to ssh into the machine on the second try.
> Thanks.

That sounds pretty annoying. Is the machine a laptop? It is possible a 
power-saver type mode is making it sleep until it gets the request.

I haven't had this issue myself at all, but power settings is the first 
place I would start looking. Another place to check might be the sshd 
settings (but again, this would be strange since others haven't reported 
the same issue).

It could also be routing in the office. But I'd check the above two 
things before I start wondering if routers don't like to remember my 
system's MAC or DHCP address or something (though its possible if your 
office needs some setting for DHCP leases to last the right amount of 
time or whatever).