ACPI laptop loses time

[Guest]

Greetings,

My system loses time whenever in standby or hibernate, not at a minute lost
per minute off rate, but some fraction of that. Perfect time kept if
shutdown or always on.

No unresolved event log errors that look related.
Most recent manufacturer system BIOS in use.

Synchronization fails silently after resuming. Date & Time | Update Time
returns successfully synchronized but the incorrect time is still there.
Restarting the windows time service and repeating the update returns correct
synchronization.

Anybody else seen this? Fixed this?

TIA,
Tom S.

Centrino 1.6 w/ 1GB RAM 52GB XP partition on 100GB disk
XP Pro SP2 + all current MS Update patches
BIOS Version/Date American Megatrends Inc. 080010, 2005-02-24
time server 0.us.pool.ntp.org

 

[Yves Leclerc]

Check the CMOS battery. This is usually a sign that the battery is getting
weak and would need replacing.

 

[Guest]

Yves, thanks for the response.

Please note that the laptop keeps perfect time when the CMOS battery is in
use when the system is off. Only when it is in a power-saving state does it
lose time.

Additionally, this laptop was fully refurbished in August 2006. A weak CMOS
is unlikely, but not impossible.

 

[Bob I]

"Power saving mode"? You mean "standby"? My guess is the proper
motherboard drivers aren't installed during the "refurb", or some
software is interfering.

 

[Guest]

Bob,

Thanks for your suggestions.

"Power saving state" to mean either stand-by or hibernate.

I received bare, refurbished replacement hardware for broken equipment under
warranty. I did the XP Professional install, then chipset drivers,
peripherals, one by one, then applications. No errors or question marks in
Device Manager. System log is clean. I've installed everything since DOS
2.x. I absolutely could have made a mistake, but I'm not seeing it.

Looks like hardware or driver to me, but so far everything checks out.
Maybe I'll redo the chipset drivers again. But that's just guessing.

Tom S.

 

[Bob I]

Was it identical to what was replaced or is it different model
motherboard? Also are there any BIOS updates for that unit from the
laptop manufacturer?

 

[Guest]

Bob,

Was it identical to what was replaced or is it different model
motherboard?

The description part numbers are the same MPC Corp NBK 1838-01, down to the
model suffix. I didn't disassemble to check any silkscreening on the boards.

Also are there any BIOS updates for that unit from the
laptop manufacturer?

Pleasantly enough, the replacement system shipped with a BIOS that hadn't
even been released on the manufacturer's website. That BIOS was publicly
released a few weeks later.

Good suggestions so far. Maybe I'll dig up the release notes for the
current BIOS and see if there is anything too terrible and roll back a
version. I don't usually like to do that. Alternatively, I could figure out
how to increase the frequency that the system does a time update to daily
instead of weekly.

Thanks,
Tom