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This is my first installation of Arch, so I may have forgotten something.

After booting it, the laptop quickly starts to became hot. I've been reading documentation on Arch wiki, but didn't found nothing about it.

My first guess is that CPU is running at max speed, but the cpupower says it isn't:

analyzing CPU 0:
  driver: acpi-cpufreq
  CPUs which run at the same hardware frequency: 0
  CPUs which need to have their frequency coordinated by software: 0
  hardware limits: 800 MHz - 1.90 GHz
  available frequency steps: 1.90 GHz, 1.80 GHz, 1.60 GHz, 1.40 GHz, 
                             1.20 GHz, 1000 MHz, 800 MHz
  available cpufreq governors: ondemand, performance
  current policy: frequency should be within 800 MHz and 1.90 GHz.
                  The governor "ondemand" may decide which speed to use
                  within this range.
  current CPU frequency is 800 MHz (asserted by call to hardware).
  boost state support:
  Supported: yes

grep "cpu MHz" /proc/cpuinfo says I'm running both CPUs at 800MHz.

cpu MHz     : 800.000
cpu MHz     : 800.000

On Windows, it works perfectly, so it's not a hardware problem.

My CPU is an AMD A4-3300M APU with Radeon(tm) HD Graphics.

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Is the fan spinning? What laptop is it? –  terdon Sep 2 '13 at 2:25

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