Aspire 5755G hot cpu

leniviy · 2012-09-09 07:34:35

Hi! Please help me cool down my laptop. Limiting the CPU frequency to the lowest value doesn't help. The fan runs faster than on Windows.

# cpufreq-set -r -g userspace
# cpufreq-set -r -u 800Mhz
# cpufreq-info
  current policy: frequency should be within 800 MHz and 800 MHz.
                  The governor "userspace" may decide which speed to use
                  within this range.
  current CPU frequency is 1.60 GHz (asserted by call to hardware).

# modprobe coretemp
$ sensors
nouveau-pci-0100
Adapter: PCI adapter
temp1:        +83.0°C  (high = +100.0°C, crit = +110.0°C)

coretemp-isa-0000
Adapter: ISA adapter
Physical id 0:  +91.0°C  (high = +86.0°C, crit = +100.0°C)
Core 0:         +86.0°C  (high = +86.0°C, crit = +100.0°C)
Core 1:         +86.0°C  (high = +86.0°C, crit = +100.0°C)
Core 2:         +88.0°C  (high = +86.0°C, crit = +100.0°C)
Core 3:         +89.0°C  (high = +86.0°C, crit = +100.0°C)

$ grep "cpu MHz" /proc/cpuinfo
cpu MHz		: 800.000
cpu MHz		: 800.000
cpu MHz		: 800.000
cpu MHz		: 800.000
cpu MHz		: 800.000
cpu MHz		: 800.000
cpu MHz		: 800.000
cpu MHz		: 800.000

Last edited by leniviy (2012-09-09 07:38:18)

leniviy · 2012-09-10 16:51:21

Powering off the discrete graphics solves the problem.

echo OFF > /sys/kernel/debug/vgaswitcheroo/switch

Yet, it's strange that this chip adds 25°C even though not used.
The laptop's fan does react to the temperature, but it never reaches 100% speed, unlike during boot.

Arch Linux

#1 2012-09-09 07:34:35

Aspire 5755G hot cpu

#2 2012-09-10 16:51:21

Re: Aspire 5755G hot cpu

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