The Kernel knows. But how ? Did the acpi make a secret dead drop ?

Greg KH greg at
Sun Jan 6 06:16:53 EST 2019

On Sun, Jan 06, 2019 at 02:22:34PM +0530, Jay Aurabind wrote:
> Hi,
> The subject line might be a bit dramatic, but I assure you my question is
> isn't.
> I have a 3-axis accelerometer (LIS3LV02DL) in my laptop which shows up as
> an input device. Since its x86, I am assuming the necessary information was
> encoded in ACPI Tables. But I cannot find any mention of this device in the
> acpi tables exposed by the kernel.

Odds are it is an i2c device, that's the way it normally is hooked up on
a laptop, not through ACPI as you have noticed.

Does that help?

greg k-h

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