standby time?

[cqxiao]

Hi,

I just bought a X60 and really like it. It is much better than I thought.

The question I have is if I put my
machine in standby mode, how long the standby mode can keep?

Last night, I put my machine on standby mode with 36% battery but next morning when I wake up the machine, it only has about 11% battery left.

Thanks/chong

[snife]

I don't think that sounds unusual - i thought it was about 4% battery usage an hour when in suspend - use hibernation and it should last about 20 days though

[cqxiao]

Glad to hear that is normal because I can not find this kind of information from the manaul.

Having said that, I hope the standby can stay longer because when I put my ibook into sleep mode, it consumes very little battery.

I guess maybe this is more of a windows xp problem than a thinkpad problem.

Thanks
chong

[pdudas]

My X60 uses 10-11% battery power per day (24h) in sleep.
I use 8 cell battery.

It seems that X60 with 1.5GB ram consumes about 1-2% per hour on the slim battery (slim battery has half capacity than 8cell)

[christopher_wolf]

Just to note, there is "RediSafe" option in the BIOS that replicates the data in memory to the HDD in a kind of "hybrid" hibernation mode in the event that the system runs out of battery whilst in suspend mode. Hibernate should last for a long, long time as it is essentially the same sleep state as the system would assume if it were indeed powered off.

The amount of time that you can spend in suspend-to-RAM does depend on how the OS that was using the system before placed the data in RAM and how well its support for ACPI and the HAL that interacts with the BIOS do in terms of power management. A good example of this is when you go to suspend in Linux and a certain powerdrain state that can manifest itself. That said, I don't know how well Windows XP handles sleep states on Core Duo chipsets as opposed to the P-M chipsets or if there are additional requirements.