Weird error and shutdown when resuming T420s

Hey guys,

Throughout the day I normally put my T420s into sleep mode. Upon resuming this screen pops up with critical battery error message and the battery bar looks like this:



Then after about 2 seconds it goes into "hibernate" and not "sleep mode". After I turn it back on it says that it shut down due to critical battery level even though it was fully charged. Once it resumes from hibernate mode then everything is back to normal.

It happened once and I didn't think much of it, but now it has happened about 3 times in the past week.

I'm not sure what is going on here, and if this is a big issue or not, any ideas?

Thanks guys

 

Are your running the latest BIOS, Power Manager driver and Power Mananger software?

Are there any clues in Event Viewer's system log?

John

 

My BIOS and drivers and everything is up to date.

I took a quick look in the Event Viewer log and couldn't find anything that looked bad immediately. Any ideas of anything I should look for? The only thing that looked to occur each time it happened was a "DNS Client Event". I can post specifics if you think it is important but I didn't figure it was.

 

Try this in Event Viewer:

Event Viewer (Local) > Windows Logs > System > Filter Current Log... > Event sources: Kernel-Power, Power-Troubleshooter

 

ConnectDon, did what you suggested and here was what showed for yesterdays events:


I had shutdowns around 1:30PM and somewhere between like 5:30 and 6:00 I think.

 

The potentially interesting info is the details at the bottom which, I think, says Thermal zone THM0 has been enumerated. This hints at a temperature issue.

I would install and run HWiNFO (32 or 64, your choice) and press the sensors button. You will then get info about the temperatures and the fan activity. You can then enable logging to record the values every 2 seconds (or such other interval as you define). With a bit of luck when you get the next crash you can look in the file to see what was happening just before the crash.

John

 

I had this issue with t410s, it must be something with lenovo's power management software.
Never found out what the issue is, nobody else on official Lenovo forum could help me either.
It pissed me to the max because in my situation it always happened when I was getting some work done.

in t420s on the other hand the battery sometimes goes to 0% (when it's 100% loaded) and after a few seconds goes back to 100%.

 

John,

I have HWiNFO 32 already installed so i'll take your advice and start a log to hopefully find out more info.

 

Interesting that you had the same problem with the T410s. Did you end up getting rid of the T410s due to the problem or did you just deal with it?

 

The latest versions of Power Manager (3.66 - 7/Vista, 1.99n - XP) were only released in the past couple of days - I just want to make sure these shutdowns occurred while using the latest version before trying to troubleshoot these logs.