Intel Virtual Button

modulename: intel-vbtn.ko

configname: CONFIG_INTEL_VBTN

Linux Kernel Configuration
└─>Device Drivers
└─>X86 Platform Specific Device Drivers
└─>Intel x86 Platform Specific Device Drivers
└─>Intel Virtual Button
In linux kernel since version 3.10 (release Date: 2013-06-30)  
This driver provides support for the Intel Virtual Button interface.
Some laptops require this driver for power button support.

To compile this driver as a module, choose M here: the module will
be called intel_vbtn.

source code: