[ltp] Suspend mystery

[Marius Gedminas]

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On Sat, Aug 09, 2003 at 08:51:47PM -0700, Mendel Cooper wrote:
> I have a TP 770Z, running kernel version 2.4.20.
>=20
> Yesterday my wife accidentally pulled the plug on me while I was in
> suspend (with the lid closed). The green power LED stayed on (dimly). When
> I hurriedly plugged back in, about 20 seconds later, and opened the
> lid, I had the very pleasant surprise of the session being restored and
> everything resuming as normal.
>=20
> The mystery is . . . that *I didn't have the battery installed*. So, wher=
e in
> the heck was the power coming from to maintain suspend? The CMOS battery?=
 The
> filter caps on the motherboard? The filter caps in the power supply (only=
 the
> AC plug had been pulled)?

My old 755CD had an small internal backup battery (Lithium) that enabled
the user to switch the main battery (NiMH) while the machine was
suspended.

> I'm afraid to try this again, but can't help wondering how long suspend w=
ould
> have been sustained without any power. A minute or two? Longer?

Marius Gedminas
--=20
Press any key to continue, or any other key to cancel.

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