Stephen Wolstenholme wrote:
On Fri, 20 Sep 2019 09:49:12 -0400, Tim Slattery
wrote:

Paul wrote:

Guadalupe wrote:
What are a good set of power options for a desktop that is used only about
an hour a day in the morning?
Computers have sleep and hibernate options.

Hibernate saves the most power, and also saves the session.

Sleep (by itself) keeps the session in RAM - if the
power goes off, the session would be lost.
On a desktop, certainly. On a laptop my understanding is that if the
power went off or the laptop was unplugged, the RAM would be kept
alive by battery power. If the battery got too low, the system would
switch to hibernate, which means that the current state would be
written to disk and the system would shut down.

I think that is what my Samsung laptop does when I use it unplugged.
The battery only lasts about 30 minutes but it's current state is
saved somewhere. It is almost certainly the disk!

Steve


With hybrid sleep, you prepare the hiberfile at sleep time.
If power is lost in sleep, you have nothing to worry about,
as the hiberfile that was prepared, is still valid and
ready to go.

It's not a good idea, particularly, to be writing a hiberfile
at the same time the battery pack is resting on the knee of
the discharge curve. (For example, on an older laptop,
where the battery flattens faster.)

Paul