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Thread: Heat and Temperature OK?

  1. #1
    Join Date
    Aug 2010
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    5

    Question Heat and Temperature OK?

    hello,

    I am absolutely new to Ubuntu. Have recently installed 10.04 Lucid Lynx. It was running fine until today. Today I kept the computer idle for a while and came back to see that my laptop screen. On restarting it told me that the system was overheated and shut down.
    I let it "cool" down for a while and restarted it and used lm-sensors and hddtemp, here is what I found:

    $sensors

    temp1: +71.0°C (crit = +94.0°C)

    k8temp-pci-00c3
    Adapter: PCI adapter
    Core0 Temp: +67.0°C
    Core0 Temp: +69.0°C
    Core1 Temp: +70.0°C
    Core1 Temp: +70.0°C

    ~$ sudo hddtemp /dev/sda
    /dev/sda: ST9160821AS: 46°C


    Here is some system information:

    uname -a
    Linux my-laptop 2.6.32-24-generic #41-Ubuntu SMP Thu Aug 19 01:12:52 UTC 2010 i686 GNU/Linux

    processor is AMD Turion (64) current RAM 2.0 GB (had to remove 1GB RAM card that was malfunctioning) Inspiron 1526.


    Questions

    1.I understood that my hard disk temperature is 46*C. How to interpret the information given by "$sensors ".?
    2.What is generally the comfortable range of temperature for all of the above?
    3. I think I have installed 32 bit ubuntu on my 64 bit computer, (though I dont think so)does this cause problem sometimes? Has removing the 1GB Ram (i removed it long ago) the cause of a problem?

    Please let me know,

    Thanks

  2. #2
    Join Date
    Apr 2008
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    California Republic
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    Re: Heat and Temperature OK?

    hi,

    AMD processors run hotter than Intel processors in general. Also in general, laptops run hotter than desktops.

    Today I kept the computer idle for a while and came back to see that my laptop screen. On restarting it told me that the system was overheated and shut down.
    was the laptop sitting on anything other than a hard and flat surface?

    alternatively, did you leave anything CPU intensive open when you let it 'idle'? flash is notorious for eating up CPU cycles, for example.

    temp1: +71.0°C (crit = +94.0°C)

    k8temp-pci-00c3
    Adapter: PCI adapter
    Core0 Temp: +67.0°C
    Core0 Temp: +69.0°C
    Core1 Temp: +70.0°C
    Core1 Temp: +70.0°C
    these temperatures aren't anything to be concerned over.
    Semper Fi

    My Non-Ubuntu Blog.
    All posts by me are Public Domain.

  3. #3
    Join Date
    Aug 2010
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    5

    Re: Heat and Temperature OK?

    Hi,

    I guess my mistake was leaving it on my bed with lot of firefox tabs open.
    But the fact is my laptop is still notoriously heating up, I tried with windows vista and it was still heating up but it didnt shut down.Perhaps the Vista doesnt mind if your system is fried or has a higher critical temperature.When I switched to ubuntu after running Vista for a while, it booted only to shut down immediately. It said its temeperature was then 96*C, (Ubuntu treats 94*C as critical temperature).

    Please let me know what might be wrong? I have lot of important stuff on this so dont want to do it any harm.

  4. #4
    Join Date
    Apr 2008
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    Re: Heat and Temperature OK?

    i'd suggest getting some compressed air, taking the laptop as far apart as you are comfortable doing, and spraying all the dust out.

    you a smoker? smoke around your laptop? if so, you will get a sneak preview of what the inside of your lungs look like.

    if you are a smoker, and the insides of the computer are covered in tar, you may need to do more than spray it with compressed air.
    Semper Fi

    My Non-Ubuntu Blog.
    All posts by me are Public Domain.

  5. #5
    Join Date
    May 2008
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    517

    Re: Heat and Temperature OK?

    Quote Originally Posted by AlAK View Post
    Hi,

    I guess my mistake was leaving it on my bed with lot of firefox tabs open.
    But the fact is my laptop is still notoriously heating up, I tried with windows vista and it was still heating up but it didnt shut down.Perhaps the Vista doesnt mind if your system is fried or has a higher critical temperature.When I switched to ubuntu after running Vista for a while, it booted only to shut down immediately. It said its temeperature was then 96*C, (Ubuntu treats 94*C as critical temperature).

    Please let me know what might be wrong? I have lot of important stuff on this so dont want to do it any harm.
    Leaving the laptop on the bed is a big no no.
    Also try yo clean it as the previous poster said.

    However, I have to say that since the last kernel updates my gnome desktop was eating all my ram, fan working at full speed and heat being built heavily. Seriously... It was painful to use.

    My solution? switched to xfce. Still using compiz and running a virtual machine with xp, ram never goes above 1.2 gb and I must say I have NEVER felt the pc so cool, with the fan almost being noticeable.

    one just never stops learning...

  6. #6
    Join Date
    Sep 2007
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    Rhode Island,USA
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    Hidden!
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    Ubuntu 14.04 Trusty Tahr

    Re: Heat and Temperature OK?

    A cooling pad can't hurt either.
    UP THE IRONS!

  7. #7
    Join Date
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    Ubuntu 11.04 Natty Narwhal

    Re: Heat and Temperature OK?

    The lucid kernel doesn't work well with alot of laptops installing the Karmic Kernel is a documented solution to it running hot, but I am not sure if this is still a problem as It seems to have been fixed with the latest kernel updates. Hope this helps.
    You can follow me at my blog.

  8. #8
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    Re: Heat and Temperature OK?

    Quote Originally Posted by techunit View Post
    The lucid kernel doesn't work well with alot of laptops installing the Karmic Kernel is a documented solution to it running hot, but I am not sure if this is still a problem as It seems to have been fixed with the latest kernel updates. Hope this helps.
    based on that information, AlAK, you should ensure your ubuntu is completely up to date.
    Semper Fi

    My Non-Ubuntu Blog.
    All posts by me are Public Domain.

  9. #9
    Join Date
    Aug 2010
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    24

    Re: Heat and Temperature OK?

    I invested £20 for a laptop USB cooler. I NEVER use my laptop without it - why? Because I want it to last for many years to come.

  10. #10
    Join Date
    Aug 2010
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    5

    Re: Heat and Temperature OK?

    Hello,

    @earthpigg @cespinal@neilms @norm24 @techunit
    Thanks for all your suggestions. I will try to implement them.

    @neilms @Norm24
    getting a cooling pad asap.

    Meanwhile, I read somewhere on the forum (sorry unable to locate the link) that ATI Radeon graphics card might also be the problem, someone suggested to reinstall the drivers/go for proprietary drivers.

    I have reinstalled them for the movement,
    $sudo apt-get install fglrx
    the computer is heating up (but not as much as before), the only annoying thing is that the fans keep running all the time.

    What are the "cool-range" for the computer:What are its usual operating temperatures for a non-overheating computer, any idea? After what temperature do the fans turn on?

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