[ltp] t40 apm suspend --- strange problem

Bob Alexander linux-thinkpad@linux-thinkpad.org
Mon, 10 Jan 2005 16:58:39 +0100


Franz R=FChmland wrote:
> Bob Alexander wrote:
>=20
>> Yesterday I left the machine in the suspended state overnight to=20
>> measure the power consumptions (13% of the high capacity battery in 14=20
>> hours).
>>
>> Further testing seems to indicate that if I suspend and a few minute=20
>> after resume, all works fine but if the machine stays suspended for=20
>> longer times the resume will be broken.
>=20
>=20
> I've just discovered the same thing. I usually leave my T41 suspended to =

> RAM (APM) when not using it and up until recently it have been working=20
> fine.
>=20
> Recently I made some changes to my kernel config (2.6.9-gentoo-r1), and=20
>  (if memory serves me right) I started noticing the same behaviour as you.
>=20
> The changes were: PCMCIA changed to module instead of compiled in,=20
> parallel port support, LVM support and Bluetooth support.
>=20
> I will now be testing my old config to see if it works OK. Then I will=20
> start troubleshooting the new stuff.
>=20
> Also, have you found a minimum time in suspension after it reliably=20
> fails to come back up?

Franz.
Did you read I solved this ? It was a BIOS settign in my case (hibernate=20
after sleep expires).

HTH,
Bob