Hi, I wonder whether you have received my kernel patch, referenced below. It might have been caught by the spam filter. Best, Alex I wrote on 2019-05-19 at 18:46: > From 6bfe30cae2be3f4fbe9f9990a4e83302569ff7e9 Mon Sep 17 00:00:00 2001 > From: Alexander Schremmer <alex@xxxxxxxxxxxxxxx> > Date: Sun, 19 May 2019 18:13:05 +0200 > Subject: [PATCH] platform/x86: Add Lenovo ThinkPad PrivacyGuard. > > This feature is found optionally in T480s, T490, T490s. > > The feature is called lcdshadow and visible via > /proc/acpi/ibm/lcdshadow. > > The ACPI methods \_SB.PCI0.LPCB.EC.HKEY.{GSSS,SSSS,TSSS,CSSS} are > available in these machines. They get, set, toggle or change the state > apparently. > > The patch was tested on a 5.0 series kernel on a T480s. > > Signed-off-by: Alexander Schremmer <alex@xxxxxxxxxxxxxxx> > --- [...]