high temperatures

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period3 · #1 Post by **period3** » Tue Sep 11, 2007 6:59 am

I have a t60, core 1 duo 2ghz (t2500), x1300, 2gb memory, and two hard drives installed (both 5400 rpm). Ubuntu 7.04.

My CPU temperatures are very high (95C+ under full load). I was trying to run something yesterday that fully loaded both cores, and the entire system shut itself off - presumably because of temperature. (log shows 'acpi trip point reached'.)

This is a stock feisty install. Is there some setting somewhere I should try to make it run cooler, or should I just take it in for repair?

EDIT: maximum fan speed is 3781 RPM.
:/proc/acpi/ibm# cat fan
status: enabled
speed: 3781
level: 7
commands: level <level> (<level> is 0-7, auto, disengaged)
commands: enable, disable
commands: watchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))

Thanks..

jamesqf · #2 Post by **jamesqf** » Tue Sep 11, 2007 6:11 pm

Powertop (www.linuxpowertop.org) will let you see what's actually using the power, and might help you get temps down.

aaa · #3 Post by **aaa** » Thu Sep 13, 2007 5:45 am

Dust. It's not a setting thing, it's not supposed to hit those temps ever unless something's physically wrong, and it's most likely dust (the fan is spinning right?)

period3 · #4 Post by **period3** » Thu Sep 13, 2007 1:06 pm

OK, I think I'll take it in for service.

powertop is interesting and made some suggestions, but they all related to saving power when the cpu was idle or partially idle. My problems always occur under load, and my machine is pretty much always at 100% cpu. Maybe laptops just aren't reliable for that sort of thing.

Fortunately, even at 97C today (Maybe I'll break 100 yet

) the machine is still stable. It is very hot on the bottom though - I think I might start taking the battery out. I don't want it to spontaneously combust.

jamesqf · #5 Post by **jamesqf** » Sun Sep 16, 2007 12:24 am

Just out of curiousity, what do you do that gets your machine to 100% load most of the time? I would sometimes get my old machine (a Dell) to 100% for several hours running test simulations, with no problems other than the fan coming on after a while. With the T60p, it's just the opposite: I can't use the machine because the fan runs all the time.

doog · #6 Post by **doog** » Mon Sep 17, 2007 8:29 am

Some of the distro's have had some problems with laptop cooling.
And if you do some research there are workarounds for this problem. Like turning the rpms up for the cooling fan.
And I think Ubuntu was one of the distro's that was having this problem.

My R40 runs about 50C using Suse 10.2 and PClinuxOS.

Quick way to tell the temperate. Is go to a terminal and type in.
acpi -V
It will tell you what your temp is and battery condition.

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