inhibiting suspend via dbus

[pgf at laptop.org]

smith wrote:
 > Deepak Saxena wrote:
 > > On Aug 09 2008, at 19:35, Mikus Grinbergs was caught saying:
 > >> One possibility -- OFW already tests for "is the XO plugged in?". 
 > >> Maybe Ohm can test for that, and decide that suspend is not needed 
 > >> when the battery is fully charged, and is not being drained.
 > > 
 > > I don't think this would work for us as in some locations electrical
 > > power is expensive and we want to conserve as much power as possible.
 > >
 > 
 > This was indeed the way ohm used to work but I argued against it because 
 >    plugged up to external power in no way indicates you have a constant 
 > electrical source.  Many cases that will be sharing a connection to a 
 > solar panel or from a battery bank and you need to be save as much as 
 > possible all the time.

this could still be selectable.  while it's necessary to provide
for those scenarios, i suspect that most laptops will have
reliable external power.  i'd think a "don't suspend when plugged
in" checkbox would be useful for most owners.  (it could default
to "off".)

also, mikus' suggestion re: watching the rate of discharge is 
interesting.  i wonder if that might be a useful input to the OHM
policy engine?  (e.g. decrease timeouts when the rate of discharge
is high)  just an ill-formed thought.

paul
=---------------------
 paul fox, pgf at laptop.org