Fan speed rpm not appearing in sensor

Rabindra Paikaray <[email protected]> Thu, 9 Nov 2023 14:10:12 +0530
Newsgroups org.kernel.vger.lm-sensors
Message-ID <CACDPk2F2XKL=OpNx-bYnoPfXcR0B0Yv0fe8Uwnyz2PjO___Osw@mail.gmail.com>
Hi ,
I am using Ubuntu 22.04 in a Intel platform to fetch the Fan speed rpm
in lm_sensor. I installed the lm sensor module.

Output of sensor command:
$ sensors
coretemp-isa-0000
Adapter: ISA adapter
Package id 0:  +31.0=C2=B0C  (high =3D +80.0=C2=B0C, crit =3D +100.0=C2=B0C=
)
Core 0:        +28.0=C2=B0C  (high =3D +80.0=C2=B0C, crit =3D +100.0=C2=B0C=
)
Core 4:        +28.0=C2=B0C  (high =3D +80.0=C2=B0C, crit =3D +100.0=C2=B0C=
)
Core 8:        +29.0=C2=B0C  (high =3D +80.0=C2=B0C, crit =3D +100.0=C2=B0C=
)
Core 12:       +26.0=C2=B0C  (high =3D +80.0=C2=B0C, crit =3D +100.0=C2=B0C=
)
Core 16:       +29.0=C2=B0C  (high =3D +80.0=C2=B0C, crit =3D +100.0=C2=B0C=
)
Core 20:       +29.0=C2=B0C  (high =3D +80.0=C2=B0C, crit =3D +100.0=C2=B0C=
)
Core 24:       +25.0=C2=B0C  (high =3D +80.0=C2=B0C, crit =3D +100.0=C2=B0C=
)
Core 28:       +27.0=C2=B0C  (high =3D +80.0=C2=B0C, crit =3D +100.0=C2=B0C=
)
Core 36:       +28.0=C2=B0C  (high =3D +80.0=C2=B0C, crit =3D +100.0=C2=B0C=
)
Core 37:       +28.0=C2=B0C  (high =3D +80.0=C2=B0C, crit =3D +100.0=C2=B0C=
)
Core 38:       +28.0=C2=B0C  (high =3D +80.0=C2=B0C, crit =3D +100.0=C2=B0C=
)
Core 39:       +28.0=C2=B0C  (high =3D +80.0=C2=B0C, crit =3D +100.0=C2=B0C=
)

acpitz-acpi-0
Adapter: ACPI interface
temp1:        +32.0=C2=B0C  (crit =3D +105.0=C2=B0C)

nvme-pci-0200
Adapter: PCI adapter
Composite:    +28.9=C2=B0C  (low  =3D  -5.2=C2=B0C, high =3D +79.8=C2=B0C)
                       (crit =3D +84.8=C2=B0C)

I could see the fan is listed in acpi device
$ cat /sys/bus/acpi/devices/INTC1048:00/fan_speed_rpm
1145

I was not getting why the fan speed rpm not appearing in sensors list.

Are there any modules/steps  missing?

Any help or pointer will be helpful?