Custom hot key programming with acpid
A little research from the command line and a short script bends your keyboard to your will.
Linux support for laptops has improved by leaps and bounds in the last decade. At this point, if you buy a laptop from any of the major manufacturers and load a Linux distro with a reasonably recent kernel version, things pretty much "just work" – problems with proprietary display drivers aside.
What can sometimes not work, however, are some of the vendor-specific hot keys on the keyboard. For example, I do a lot of presentations, and I'd like the hot key that's supposed to switch between my laptop display and an external monitor (Fn+F7 on my ThinkPad) to work under Linux. In this article, I describe my solution for this problem and offer some pointers for customizing hot key events.
Getting to Know acpid
Most Linux systems support ACPI (Advanced Configuration and Power Interface ), a popular standard for device configuration and power management. The ACPI standard specifies a structure for defining and customizing hardware events. In Linux, the acpid daemon  listens for ACPI events and maps each event to an action. Hot key events are typically handled by acpid.
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