Asus CPU fan overfast on low temperator

Hi

I have a problem on my Asus TUF Gaming FX705GD.

I can’t control my CPU fan. Let me explain, the Fn+F5 key work but for some reason, the CPU fan become overfast with 35-40 temperature. I have to manually press Fn+F5 key to stop it but after a few minute, the CPU fan re-become overfast.

I don’t know what is the problem.

[axeln@axel-tufgamingfx705gd ~]$ inxi -Fazy
System:
  Kernel: 5.10.7-3-MANJARO x86_64 bits: 64 compiler: gcc v: 10.2.1 
  parameters: BOOT_IMAGE=/boot/vmlinuz-5.10-x86_64 
  root=UUID=f95d6bd2-a05c-4ca3-b04a-731e3119bf1b ro quiet apparmor=1 
  security=apparmor udev.log_priority=3 snd_hda_intel.dmic_detect=0 
  Desktop: KDE Plasma 5.20.5 tk: Qt 5.15.2 wm: kwin_x11 dm: SDDM 
  Distro: Manjaro Linux 
Machine:
  Type: Laptop System: ASUSTeK product: TUF Gaming FX705GD_FX705GD v: 1.0 
  serial: <filter> 
  Mobo: ASUSTeK model: FX705GD v: 1.0 serial: <filter> 
  UEFI: American Megatrends v: FX705GD.306 date: 05/25/2020 
Battery:
  ID-1: BAT0 charge: 48.0 Wh condition: 53.5/64.1 Wh (83%) volts: 16.0/15.6 
  model: Simplo SDI ICR18650 type: Li-ion serial: <filter> status: Discharging 
  cycles: 41 
CPU:
  Info: Quad Core model: Intel Core i5-8300H bits: 64 type: MT MCP 
  arch: Kaby Lake note: check family: 6 model-id: 9E (158) stepping: A (10) 
  microcode: DE L2 cache: 8 MiB 
  flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx 
  bogomips: 36812 
  Speed: 900 MHz min/max: 800/2300 MHz Core speeds (MHz): 1: 900 2: 900 3: 900 
  4: 900 5: 900 6: 900 7: 900 8: 900 
  Vulnerabilities: Type: itlb_multihit status: KVM: VMX disabled 
  Type: l1tf 
  mitigation: PTE Inversion; VMX: conditional cache flushes, SMT vulnerable 
  Type: mds mitigation: Clear CPU buffers; SMT vulnerable 
  Type: meltdown mitigation: PTI 
  Type: spec_store_bypass 
  mitigation: Speculative Store Bypass disabled via prctl and seccomp 
  Type: spectre_v1 
  mitigation: usercopy/swapgs barriers and __user pointer sanitization 
  Type: spectre_v2 mitigation: Full generic retpoline, IBPB: conditional, 
  IBRS_FW, STIBP: conditional, RSB filling 
  Type: srbds mitigation: Microcode 
  Type: tsx_async_abort status: Not affected 
Graphics:
  Device-1: Intel UHD Graphics 630 vendor: ASUSTeK driver: i915 v: kernel 
  bus ID: 00:02.0 chip ID: 8086:3e9b 
  Device-2: NVIDIA GP107M [GeForce GTX 1050 Mobile] vendor: ASUSTeK 
  driver: nvidia v: 460.32.03 alternate: nouveau,nvidia_drm bus ID: 01:00.0 
  chip ID: 10de:1c8d 
  Device-3: IMC Networks USB2.0 HD UVC WebCam type: USB driver: uvcvideo 
  bus ID: 1-11:3 chip ID: 13d3:56a2 serial: <filter> 
  Display: x11 server: X.Org 1.20.10 compositor: kwin_x11 driver: 
  loaded: modesetting,nvidia unloaded: fbdev alternate: intel,nouveau,nv,vesa 
  display ID: :0 screens: 1 
  Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.0x11.2") 
  s-diag: 582mm (22.9") 
  Monitor-1: eDP-1 res: 1920x1080 hz: 60 dpi: 128 size: 382x215mm (15.0x8.5") 
  diag: 438mm (17.3") 
  OpenGL: renderer: Mesa Intel UHD Graphics 630 (CFL GT2) v: 4.6 Mesa 20.3.3 
  direct render: Yes 
Audio:
  Device-1: Intel Cannon Lake PCH cAVS vendor: ASUSTeK driver: snd_hda_intel 
  v: kernel alternate: snd_soc_skl,snd_sof_pci bus ID: 00:1f.3 
  chip ID: 8086:a348 
  Sound Server: ALSA v: k5.10.7-3-MANJARO 
Network:
  Device-1: Intel Wireless-AC 9560 [Jefferson Peak] driver: iwlwifi v: kernel 
  port: 6000 bus ID: 00:14.3 chip ID: 8086:a370 
  IF: wlo1 state: up mac: <filter> 
  Device-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet 
  vendor: ASUSTeK driver: r8168 v: 8.048.03-NAPI modules: r8169 port: 3000 
  bus ID: 03:00.0 chip ID: 10ec:8168 
  IF: enp3s0 state: down mac: <filter> 
Drives:
  Local Storage: total: 1.03 TiB used: 295.06 GiB (28.1%) 
  SMART Message: Unable to run smartctl. Root privileges required. 
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Kingston model: RBUSNS8154P3128GJ 
  size: 119.24 GiB block size: physical: 512 B logical: 512 B speed: 15.8 Gb/s 
  lanes: 2 serial: <filter> rev: E8FK11.C temp: 36.9 C 
  ID-2: /dev/sda maj-min: 8:0 vendor: Toshiba model: MQ04ABF100 
  size: 931.51 GiB block size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s 
  serial: <filter> rev: 0J 
Partition:
  ID-1: / raw size: 44.06 GiB size: 43.12 GiB (97.86%) used: 21.01 GiB (48.7%) 
  fs: ext4 dev: /dev/nvme0n1p5 maj-min: 259:5 
  ID-2: /boot/efi raw size: 260 MiB size: 256 MiB (98.46%) 
  used: 45.9 MiB (17.9%) fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:1 
  ID-3: /home raw size: 455.31 GiB size: 447.16 GiB (98.21%) 
  used: 274 GiB (61.3%) fs: ext4 dev: /dev/sda2 maj-min: 8:2 
Swap:
  Alert: No Swap data was found. 
Sensors:
  System Temperatures: cpu: 41.0 C mobo: 27.8 C 
  Fan Speeds (RPM): cpu: 0 
Info:
  Processes: 284 Uptime: 17m wakeups: 1 Memory: 7.63 GiB 
  used: 3.93 GiB (51.6%) Init: systemd v: 247 Compilers: gcc: 10.2.0 
  clang: 11.0.1 Packages: pacman: 1804 lib: 524 flatpak: 0 Shell: Bash 
  v: 5.1.0 running in: konsole inxi: 3.2.02 

I have trying : fancontrol (with sensors-detect and pwmconfig) : https://wiki.archlinux.org/index.php/Fan_speed_control => same issue
and on arch wiki https://wiki.archlinux.org/index.php/Fan_speed_control#asus-nb-wmi but fancontrol not work and on the asus-nb-wmi section, the command to control fan don’t work.
I have tried too asus_fanmode on https://github.com/leonmaxx/asus_fanmode => same issue
Switching kernel (5.10, 5.9, 5.4 lts) => same issue

But nothing work.

I don’t know if it’s related but when I play a video game and I quit it, the CPU and GPU fans stay overfast even when the temperature drops to 35 ° C. I have to either restart the PC or put it to sleep and then wake it up.

Someone can help me ?

PS : my bios is up to date

maybe nbfc works…
It is worth a try.

I would like to try it but in https://github.com/hirschmann/nbfc/tree/master/Configs I don’t find my model or like they said in https://wiki.archlinux.org/index.php/Fan_speed_control#Installation a similar model.
I trying to create a NBFC config