There are two methods for touchpad in ASL code that seems to be related
to power control:
Method (TPRD, 0, Serialized)
{
P80H = 0x2E
Return (^^EC0.ECTP) /* \_SB_.PCI0.LPCB.EC0_.ECTP */
}
Method (TPWR, 1, Serialized)
{
P80H = 0x2F
^^EC0.ECTP = Arg0
}
However, we'll need to ask Lenovo how and when to use them.
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https://bugs.launchpad.net/bugs/1882388
Title:
Touchpad recognised as generic mouse
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