I just commited support to connect the front panel power button on psycho
   (PCI) based machines to sysmon and /dev/power. This means that you just
   need to add

cool!
   
    - I have no idea how this (hardware-wise) works on sbus machines and wether
      those support this kind of button at all

sbus keyboards have power buttons...
   
    - The obvious next target is the power button on the keyboard, but I have
      too many uncommited keyboard changes in my tree right now that I need
      to finish and cleanup first ;-) [hopefully realy soon]



.mrg.