After installing Lirc not able to start HTPC

Hello!

I've assembled a HTPC ruing Ubuntu Gnome 15.10 in a Antec Remote Fusion Case.
The remote (Antec Veris RM200) is supportetd by the keel, so Volume+, Volume-,
Powerbutton and so on work out of the box. So waking up from shutdown with the remote
worked just fine.
After installing Lirc using devinput I can't power on the system with the remote any more.
It still works on suspend or hibeate, but not after a clean shutdown.

Does anybody know why that is and what I can do about it?

Thanks!

Best regards
Proton