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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@alexanderweb.de>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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| .. | ||
| asus-laptop.rst | ||
| disk-shock-protection.rst | ||
| index.rst | ||
| laptop-mode.rst | ||
| lg-laptop.rst | ||
| sony-laptop.rst | ||
| sonypi.rst | ||
| thinkpad-acpi.rst | ||
| toshiba_haps.rst | ||