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JanusDC

Member

From: Buenos Aires

Registered: 2012-05-20

Posts: 12

Website

ThinkBook 14s Yoga ITL, fan off

The fans of this laptop do not turn on, even when the temperature scales to 95 C. My only option to make the temperature descend, is to set the energy_performance_preference to "balance_power" or to "power" by doing

for n in {0..7}; do
  echo "balance_power" | sudo tee /sys/devices/system/cpu/cpufreq/policy$n/energy_performance_preference
done

The other files on that folder are :

affected_cpus
base_frequency
cpuinfo_max_freq
cpuinfo_min_freq
cpuinfo_transition_latency
energy_performance_available_preferences
energy_performance_preference
related_cpus
scaling_available_governors
scaling_cur_freq
scaling_driver
scaling_governor
scaling_max_freq
scaling_min_freq
scaling_setspeed

I am using the zen kernel:

uname -a 
Linux R5-D4 6.3.8-zen1-1-zen #1 ZEN SMP PREEMPT_DYNAMIC Wed, 14 Jun 2023 20:10:15 +0000 x86_64 GNU/Linux

Any ideas?