alitalf: Skiing in the 3 Valleys, France, 2008 (Default)
[personal profile] alitalf
I set the computer into sleep mode when I had to go out, so that I could take up typing the email I was part way through later. But, when I came to start using it again, pressing the power button made no difference.

So, I switched off the output of the UPS until the blue light stopped flashing, then switched it back on again and hit the computer's power switch.

It returned to the state it had been in before I set it in sleep mode, half-written email and all. Not that I am complaining, but I wish I knew how that happened. Could it have anything to do with having upgraded to a solid state drive recently?

Date: 2012-08-25 07:37 pm (UTC)
adalger: Earthrise as seen from the moon, captured on camera by the crew of Apollo 16 (Default)
From: [personal profile] adalger
It's called hibernation. The computer basically writes its state to disc and shuts down. Then, next time you turn it on, it sees that saved state and loads it up.

Date: 2012-08-30 07:02 am (UTC)
bens_dad: (Default)
From: [personal profile] bens_dad
There is a suspend-hybrid mode which writes the date to disk like hibernation, then goes into sleep mode (keeping power to the RAM) so that it can come back almost instantly when requested.
I assume that this allows laptops to go to a state that recovers quickly, use very little power but doesn't lose data if the battery does go completely flat.

My guess is that your machine crashed while in this suspend-hybrid state, as your second possiblity suggests.

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alitalf: Skiing in the 3 Valleys, France, 2008 (Default)
Andy

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