06-07-2012 05:44 AM - edited 06-07-2012 05:45 AM
I have a ~6 month of Thinkpad T420s that has developed a frustrating problem.
I first noticed a strange issue where after extended medium-level use of the GPU and CPU, everything would suddenly move to a complete crawl. Performance just diaspeared. If I closed the programs for a few minutes, the system would speed back up to its normal and happy speed.
I ran CPU-z and coretemp and discovered that my CPU would heat up to about 90C, than than aggressively throttle itself down in an effort to keep cool.
I checked the power settings, and everything is set for maximum performance and auto fan use.
The thing that is really frustrating me is that I'm not pushing my computer that agressively. Generally somewhere between 20%-60% usage. Issues start after roughly 2 hours of usage.
Running off a 90W power adapter
I have the most recent BIOS version.
Does anyone have any ideas? I am out of the country for the next 8 weeks or so. Returning it to Lenovo isn't really an option at this point.
06-07-2012 10:38 AM
06-07-2012 11:59 AM - edited 06-07-2012 12:05 PM
Are you using it on a hard surface with good air flow behind it and to the left? Laptops don't work well sitting on a lap or on a bed. Your machine has a thin case (less room) so it might run a little hotter than a T420, but your temperatures are much hotter than I would expect. Unless you are routinely using it in a very dusty area or around lots of animals, I wouldn't expect the fan to clog up this soon. You should be able to use it all day at fairly high load, without worry.
06-08-2012 01:32 AM - edited 06-08-2012 01:41 AM
Thanks guys, I will pop it open tonight and check the heat sinks.
It is always almost always used on a hard desk. I have no pets, and don't think anywhere I live or work is particularily dusty.
Can humidity affect these kinds of things?
I am in Italy for a summer project. I arrived about a month ago, and these problems started about 10 days ago. It's not much hotter here now than it would be back in Canada, but it is a little more humid.
06-08-2012 01:51 AM
06-11-2012 09:22 AM
06-11-2012 09:48 AM
06-11-2012 09:50 AM