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    Laptop hotter than normal

    I have a Dell Inspiron 1440 laptop that's been very noisy since I installed Natty. When idle in Maverick, the fans would usually spin all the way down. When idle in Natty, the fans are 2 or even 3 steps above their baseline and the laptop gets unusually warm. I've heard that kernels above .38 have a power regression; would that contribute to an overall increase in the computer's temperature? On average the laptop uses 20-30% CPU, so I installed cpufrequtils and set both cores to powersave, but that didn't seem to help. Here's the output from lm-sensors:
    Code:
    acpitz-virtual-0
    Adapter: Virtual device
    temp1:    +53.5°C (crit = +100.0°C)         
    
    coretemp-isa-0000
    Adapter: ISA adapter
    Core 0:   +47.0°C (high = +105.0°C, crit = +105.0°C) 
    
    coretemp-isa-0001
    Adapter: ISA adapter
    Core 1:   +46.0°C (high = +105.0°C, crit = +105.0°C)
    and the output from cpufreq-info
    Code:
    analyzing CPU 0:
     driver: acpi-cpufreq
     CPUs which run at the same hardware frequency: 0 1
     CPUs which need to have their frequency coordinated by software: 0
     maximum transition latency: 10.0 us.
     hardware limits: 1.20 GHz - 2.20 GHz
     available frequency steps: 2.20 GHz, 1.60 GHz, 1.20 GHz
     available cpufreq governors: conservative, ondemand, userspace, powersave, performance
     current policy: frequency should be within 1.20 GHz and 2.20 GHz.
             The governor "powersave" may decide which speed to use
             within this range.
     current CPU frequency is 1.20 GHz.
     cpufreq stats: 2.20 GHz:9.73%, 1.60 GHz:0.54%, 1.20 GHz:89.73% (7631)
    analyzing CPU 1:
     driver: acpi-cpufreq
     CPUs which run at the same hardware frequency: 0 1
     CPUs which need to have their frequency coordinated by software: 1
     maximum transition latency: 10.0 us.
     hardware limits: 1.20 GHz - 2.20 GHz
     available frequency steps: 2.20 GHz, 1.60 GHz, 1.20 GHz
     available cpufreq governors: conservative, ondemand, userspace, powersave, performance
     current policy: frequency should be within 1.20 GHz and 2.20 GHz.
             The governor "powersave" may decide which speed to use
             within this range.
     current CPU frequency is 1.20 GHz.
     cpufreq stats: 2.20 GHz:0.37%, 1.60 GHz:0.00%, 1.20 GHz:99.63% (1)
    Any advice on cooling down my laptop, even if it means downgrading the kernel, would be appreciated. Thanks

    #2
    Re: Laptop hotter than normal

    You have two choices: downgrade the kernel, or downgrade Kubuntu to your previous version. This problem is affecting most distros because the kernel is universal among distros.
    "A nation that is afraid to let its people judge the truth and falsehood in an open market is a nation that is afraid of its people.”
    – John F. Kennedy, February 26, 1962.

    Comment


      #3
      Re: Laptop hotter than normal

      Downgrading the kernel definitely helped . I grabbed 2.6.36 from http://kernel.ubuntu.com/~kernel-ppa/mainline/, and average temperature dropped by 4 degrees.

      Code:
      acpitz-virtual-0
      Adapter: Virtual device
      temp1:    +48.5°C (crit = +100.0°C)         
      
      coretemp-isa-0000
      Adapter: ISA adapter
      Core 0:   +42.0°C (high = +105.0°C, crit = +105.0°C) 
      
      coretemp-isa-0001
      Adapter: ISA adapter
      Core 1:   +41.0°C (high = +105.0°C, crit = +105.0°C)

      Comment


        #4
        Re: [Solved] Laptop hotter than normal

        My dual core averages between 38 and 40C during most operations. When I play videos or do heavy graphics they will rise to 57C
        "A nation that is afraid to let its people judge the truth and falsehood in an open market is a nation that is afraid of its people.”
        – John F. Kennedy, February 26, 1962.

        Comment

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