Arch Linux

nilo

Member

Registered: 2018-07-11

Posts: 11

Fan control in Ryzen Zen 3 5600U laptop

I recently acquired a zen 3 laptop with Ryzen 5 5600u processor, and installed archlinux. Everything is perfect, except that the fan turns on with a very annoying noise as soon as ac power is plugged in.

It seems like SOC current increases considerably, with an increase of 10-fold in package power at idle state (data from Zenmonitor). Bios is up-to-date and I'm using amd-pstate (since battery life is much better than acpi-cpufreq) as driver:

❯ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_driver
amd-pstate

analyse du CPU 0 :
  driver: amd-pstate
  CPUs which run at the same hardware frequency: 0
  CPUs which need to have their frequency coordinated by software: 0
  maximum transition latency: 131 us
  limitation matérielle : 400 MHz - 4.29 GHz
  régulateurs disponibles : performance schedutil
  tactique actuelle : la fréquence doit être comprise entre 400 MHz et 400 MHz.
                  Le régulateur "schedutil" est libre de choisir la vitesse
                  dans cette plage de fréquences.
  current CPU frequency: Unable to call hardware
  current CPU frequency: 400 MHz (asserted by call to kernel)
  boost state support:
    Supported: yes
    Active: yes
    AMD PSTATE Highest Performance: 166. Maximum Frequency: 4.29 GHz.
    AMD PSTATE Nominal Performance: 89. Nominal Frequency: 2.30 GHz.
    AMD PSTATE Lowest Non-linear Performance: 43. Lowest Non-linear Frequency: 1.11 GHz.
    AMD PSTATE Lowest Performance: 16. Lowest Frequency: 400 MHz.

The sensors output shows that the cpu temperature rises up quickly with ac power with same ambient temperature (30°C) and work load. Without ac power (fan is off) :

➜ sensors
hp-isa-0000
Adapter: ISA adapter
fan1:           0 RPM
fan2:           0 RPM

BAT1-acpi-0
Adapter: ACPI interface
in0:          13.04 V  

acpitz-acpi-0
Adapter: ACPI interface
temp1:        +44.0°C  (crit = +226.8°C)
temp2:        +20.0°C  

amdgpu-pci-0400
Adapter: PCI adapter
vddgfx:      756.00 mV 
vddnb:       662.00 mV 
edge:         +43.0°C  
PPT:           0.00 W  

ucsi_source_psy_USBC000:001-isa-0000
Adapter: ISA adapter
in0:           0.00 V  (min =  +0.00 V, max =  +0.00 V)
curr1:         0.00 A  (max =  +0.00 A)

zenpower-pci-00c3
Adapter: PCI adapter
SVI2_Core:   757.00 mV 
SVI2_SoC:    657.00 mV 
Tdie:         +44.4°C  (high = +95.0°C)
Tctl:         +44.4°C  
SVI2_P_Core:   1.50 W  
SVI2_P_SoC:    1.16 W  
SVI2_C_Core:   2.63 A  
SVI2_C_SoC:    1.76 A 

one minute after ac plugged in (fan turns as soon as ac plugged in):

➜ sensors
hp-isa-0000
Adapter: ISA adapter
fan1:           0 RPM
fan2:           0 RPM

BAT1-acpi-0
Adapter: ACPI interface
in0:          13.18 V  

acpitz-acpi-0
Adapter: ACPI interface
temp1:        +56.0°C  (crit = +226.8°C)
temp2:        +20.0°C  

amdgpu-pci-0400
Adapter: PCI adapter
vddgfx:      749.00 mV 
vddnb:       693.00 mV 
edge:         +44.0°C  
PPT:           0.00 W  

ucsi_source_psy_USBC000:001-isa-0000
Adapter: ISA adapter
in0:           0.00 V  (min =  +0.00 V, max =  +0.00 V)
curr1:         0.00 A  (max =  +0.00 A)

zenpower-pci-00c3
Adapter: PCI adapter
SVI2_Core:     1.29 V  
SVI2_SoC:    694.00 mV 
Tdie:         +55.6°C  (high = +95.0°C)
Tctl:         +55.6°C  
SVI2_P_Core:   9.38 W  
SVI2_P_SoC:    1.63 W  
SVI2_C_Core:   6.59 A  
SVI2_C_SoC:    2.35 A 

Is there something that can be done to stop the fan turning on every time with ac is plugged in ?