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Ubuntu auto shutdown due to high CPU temperature

Ubuntu

I use a laptop with Ubuntu 8.10 installed at work. While running the some high process, the CPU temperature get really high and its automatically shutdown the system. This thing happen every 2 or 3 days and its really annoying. The syslog showed the following error message:

ACPI: Critical trip point
Critical temperature reached (100 C), shutting down.

I know it is a safety feature, but really, I can’t afford to keep having the system shutdown while my system doing something important. My system fans are working but for whatever reason my CPU temp exceeds the critical threshold of 99C. On some systems you can see what your threshold is within the BIOS and even edit it but not on this one. So what’s a frustrated developer supposed to do? Well, it turns out you can tell you system to ignore the high temp threshold and to just keep on chugging along. NOTE: This isn’t the best advice I ever gave, if you do this then fry your CPU don’t come bitching to me.

sudo vi /etc/modprobe.d/options

Go to the last line of the file and add:
options thermal nocrt=1

Save the file.

Once you have this option set you need to reconfigure the kernel to pick up these changes, enter the following command:

sudo dpkg-reconfigure linux-image-$(uname -r)

This will update your kernel and then tell you to restart when it is done. Once you restart the system, type the following command the verfiy:

cat /proc/acpi/thermal_zone/*/*

It should display something similar like below.

<setting not supported>
<polling disabled>
state:                   ok
temperature:             52 C
critical (S5):           99 C <disabled>

Now your system won’t restart when the critical heat point is passed. Again, don’t blame me if you hurt your machine by doing this.

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  1. IanG
    March 10, 2009 at 8:19 pm | #1

    I have reported the problem to launchpad, but alas developers don;t seem to want to get involved.

  2. IanG
    March 10, 2009 at 8:21 pm | #2

    Sorry, here’s Ubuntu’s Launchpad website, Bug No 314688:

    https://bugs.launchpad.net/bugs/314688

  3. IanG
    March 18, 2009 at 5:33 am | #3

    So in the end to resolve my problem, I purchased an Arctic Cooler Freezer Pro 7 to replace my ‘factory fitted’ Akasa HSF ( Heat sink and fan) assembly for my dual core CPU. My system now runs 20°C lower when using the most CPU intensive programs. SO no more critical shutdowns – for the moment at least!!!

    Good luck everyone

  4. Mark
    July 11, 2009 at 4:50 pm | #4

    This is the solution I have been looking for. Thanks a lot!

    One question….will bios shut down the cpu when it reaches the bios critical temperature? It used to do that when I was using windows; and if that happens, then I’m cool with doing this change.

  5. September 28, 2009 at 1:55 am | #5

    I would never do what you suggest, that setting is there to take care of your laptop. Why don’t you just try to clean the fan and heatsink?

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  7. Deelkar
    May 3, 2010 at 7:44 pm | #7

    Vacuum your notebook’s air inlets, enable thermal throttling in BIOS.
    Much better than having your CPU fry itself.

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  9. Kevin
    March 20, 2011 at 2:12 pm | #9

    Thanks for the write up man, this issue was driving me up the wall. My processor would reach the limit during a Handbrake conversion and shut down every time without completing it. I have my doubts now about this I7 processor in my laptop now, they run way too hot.

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  14. Alin
    January 16, 2014 at 11:18 pm | #14

    hello, i have an acer aspire 7738g, dual core… it sometimes schuts down due to critical temp. the problem is the critical temp. is set at 88°C allthow in windows it is set at 100°C..
    how can i change the crit. temp to 100°C in Ubuntu?

    thank you for your answers

  1. July 2, 2013 at 10:13 pm | #1

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