Distribution:
Ubuntu 24.04.4 LTS
Kernel:
7.0.0-28-generic
Model:
Lenovo Legion 9 16IRX9
Machine Type:
83G0
BIOS:
NXCN23WW
CPU:
Intel Core i9-14900HX
GPU:
NVIDIA RTX 4080 Laptop
Problem:
The laptop boots correctly.
platform_profile works.
FN+Q changes power modes.
Embedded Controller is detected.
The legion_laptop module loads successfully with force=1.
However, fan control is unavailable.
No PWM interface is created.
No fancurve interface is created.
The CPU reaches about 82°C while fans remain almost idle.
I tested:
- Ubuntu 24.04
- multiple kernels (6.8, 7.0)
- latest BIOS
- latest NVIDIA driver
The issue remains identical on all tests
LegionDebug_2026-07-19_13-15-11.tar.gz
Distribution:
Ubuntu 24.04.4 LTS
Kernel:
7.0.0-28-generic
Model:
Lenovo Legion 9 16IRX9
Machine Type:
83G0
BIOS:
NXCN23WW
CPU:
Intel Core i9-14900HX
GPU:
NVIDIA RTX 4080 Laptop
Problem:
The laptop boots correctly.
platform_profile works.
FN+Q changes power modes.
Embedded Controller is detected.
The legion_laptop module loads successfully with force=1.
However, fan control is unavailable.
No PWM interface is created.
No fancurve interface is created.
The CPU reaches about 82°C while fans remain almost idle.
I tested:
The issue remains identical on all tests
LegionDebug_2026-07-19_13-15-11.tar.gz