Fan speeds up when laptop starts idling

Support
1

I have an ASUS ROG Strix G17 G713RS-LL008 - 17,3" WQHD 240Hz, AMD Ryzen 9-6900HX, 32GB RAM, 1TB SSD, RTX 3080, FreeDOS

I recently noticed that always when my laptop enters idle mode (after afk) the fans start spinning up hard.

I checked sensors

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)

asus-isa-0000
Adapter: ISA adapter
cpu_fan:     2700 RPM
gpu_fan:     2500 RPM

amdgpu-pci-0500
Adapter: PCI adapter
vddgfx:        1.45 V  
vddnb:         1.03 V  
edge:         +49.0°C  
PPT:          20.05 W  

BAT0-acpi-0
Adapter: ACPI interface
in0:          16.74 V  

mt7921_phy0-pci-0400
Adapter: PCI adapter
temp1:        +18.0°C  

k10temp-pci-00c3
Adapter: PCI adapter
Tctl:         +56.2°C  

nvme-pci-0200
Adapter: PCI adapter
Composite:    +31.9°C  (low  =  -0.1°C, high = +82.8°C)
                       (crit = +84.8°C)
Sensor 1:     +31.9°C  (low  = -273.1°C, high = +65261.8°C)

acpitz-acpi-0
Adapter: ACPI interface
temp1:        +56.0°C

Shortly after the laptop stops idling it’s still at over 5000rpm and the same temps.

2

i have no idea,
but on KDE there a process named Baloo,it indexes files.
maybe it does that when it sense there is no activity?

3

I have a similar issue on a Thinkpad T495 with an AMD Ryzen 5 PRO 3500U
When i use the Laptop then fans are off or on low like 3200RPM, but on idle (e.g. the display goes off) the fans spin up above 4000 RPM and also the temperature, especially of the GPU rises to around 70°C

amdgpu-pci-0600
Adapter: PCI adapter
vddgfx:           N/A  
vddnb:            N/A  
edge:         +72.0°C

@raycoms: were you able to solve this?

btw, Baloo indexer is turned off in settings

EDIT:

there is definitely hogging something on the CPU while idle, and it normalizes in the end as soon as i unlock the screen

sadly i’m not allowed to share a screenshot there :sweat_smile:

strange thing is, i tried logging the cpu consumption while idle and actually nothing seems to report a higher cpu usage then usual there :thinking:

EDIT2: unfortunately i can’t paste links, but there is a confirmed bug in the KDE bug tracker with ID 484323