Can't hold down more than 2 buttons

Hello, I’m new to this and I don’t know what to do, but anyway while i’m playing Mario games I can’t Sprint and jump at the same time, because it wont allow me to hold down more than 2 buttons, other games are unplayable because of this. Any help on how to fix this? Also, lakka crashes when I launch Super mario 64.

You should tell us [what platform / lakka version / gamepad / rom crc ] are you using.

It is a known issue apparently: http://libretro.com/forums/showthread.php?t=5116

it’s a known issue on android, I don’t know about other platforms. Windows is fine.

Is this a keyboard?

I’ve never heard of that before :o

I uninstalled windows, I have Lakka OS. Using a keyboard on a “hp agency series c12c” laptop. EDIT: Also, my 360 controller doesn’t work, the circle glows green and lakka says its connected but no input is coming through. I have the latest version of Lakka and all roms don’t work with more than two buttons.