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I have a lenovo g510 with intel i7-4700 inside and after several months something strange has happend. When it runs using battery power everything is ok - cpu freq is scaling. But when it's plugged in then cpu feq is always about 800MHz.

lscpu
Model:                 60
Model name:            Intel(R) Core(TM) i7-4700MQ CPU @ 2.40GHz
Wersja:                3
CPU MHz:               800.156
CPU max MHz:           3400,0000
CPU min MHz:           800,0000
BogoMIPS:              4789.02


cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_driver 
intel_pstate

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor 
powersave

I have also Windows on this laptop and situation is the same on both OS. I'm not using original charger but with the same parameter as original one.

miepsik
  • 21
  • 1

1 Answers1

1

Try disabling intel_pstate through Linux kernel options as described here.

NickKolok
  • 119