Hello! I'm having a problem that Google can't tell me much about. I had been running the Windows x86 build of KSP while I set up my graphics driver on Linux, and my Logitech Extreme 3D Pro joystick worked like a charm. Now that I'm on Linux however, I'm having difficulty with the buttons. If I press the button I've mapped as "RCS Toggle" or any other "toggle", the indicator for that function turns on or off every frame. If I try to stage, I hear the staging click 20+ times per second. Spying on the raw joystick with jstest, I see only what I would expect. When I press a button, jstest labels that button as "on" and when I let go it labels it as "off." My machine is Linux Mint 17 (kernel 3.13, based off of Ubuntu Trusty), with NVIDIA optimus and bumblebee. To launch KSP, I use "optirun ./KSP.x86_64". Has anyone else experienced this issue or know of a workaround? I don't know whether this is a Unity/Linux problem or whether it is restricted to KSP. The analog axes work just fine. Thanks for your help!