Power button to turn on mythfrontend 
If you wish to use your Power button to turn on mythfrontend incase of crash you can do so by adding 'irexec --daemon' to your startup and add the following to your ~/.lircrc (this applys to hauppauge remotes, adjust as needed) 

File: ~/.lircrc  
begin
     button = Power
     prog = irexec
     repeat = 0
     config = mythfrontend
end