On Sun, 24 Feb 2019 00:31:09 +0000, J. P. Gilliver (John) wrote:

In message , Ralph Fox
writes:
On Sat, 23 Feb 2019 21:58:47 +0000, J. P. Gilliver (John) wrote:

Subject: Can I make battery-dropout cause a "sleep"?
If that's the right name.

At present, if the battery runs down when I'm not looking, on restarting
the machine (by pressing the power button) after connecting the supply,
it does a restart similar to if I'd shut it down, other than that it
gives the "Windows did not shut down properly", and some app.s say
_they_ did not shut down properly.

Is it possible to set something so that the system does a "sleep",
"hibernate", or whatever, so that when I apply power and restart, it
wakes itself up how it was? If it is, what settings do I have to change
where?

I'm not talking about shutdowns instigated by an action, such as closing
the lid or pressing the power button. Is it even _possible_ to trap the
"battery is too low" situation?

W7 HP SP1 32-bit.


Yes, you can.
See
https://www.howtogeek.com/howto/3963...-battery-actio
n-in-windows-7/

Thank you. I find I already have "Critical battery action" set to
Hibernate (which I think is the default). I have changed "Critical
battery level" "On battery" from 2% to 3% - I'll see if that makes any
difference. I only have about 3G of RAM, so it shouldn't need long to
hibernate.


This laptop is set to 5%, and I don't recall ever changing it.

From my old (previous) laptop I know that once the battery gets old and
loses capacity then 5% will not be enough to successfully hibernate.


and
https://www.thewindowsclub.com/chang...attery-action-
windows-8-7

Thanks. That seems to lead to more or less the same area - except it
says you can set a full battery action (or at least notification) too; I
can't see that, but maybe that's only available in Windows 8, despite
what it said.

I set mine to "hibernate", not "sleep". "Sleep" still uses power,
even if less. After too many hours in "sleep" the battery will
still run down and give the same problem.

Yes, I'd go for hibernate too; I want it to save so it doesn't rely on
battery.

The laptop takes a little longer to restart from "hibernate" than
from "sleep", but I think it is worth it to avoid the risk of
the battery running down.

Indeed.

If it _has_ hibernated, should pressing the power button (after
reconnecting external power, of course) always make it do a
restore-from-hibernated-state, or can it be set to always boot as if
from cold? If it can, where is that setting (so I can make sure it's set
to restore-from-hibernate)?


Here, it always restores from hibernated state.

There is this from Microsoft:
https://support.microsoft.com/en-nz/...hat-is-running

If that did anything to the battery low action, I suspect it might stop
it from hibernating (i.e. stop it from saving to hiberfil.sys).


I also have both low and critical set to make a sound (a klaxon and a
train whistle respectively), and these settings are definitely there
when I check them after I've done a restart (and the sounds play when I
click the test button): however, the last two times, I'm sure I didn't
hear them, and I was sitting here by - in fact using - the computer when
the battery ran down.


--
Kind regards
Ralph