Title pretty much says it all. I have a bunch of retro controllers (NES, SNES, SEGA, etc) all converted to USB and working with their respective games. But this only works when I run RetroPie off the SD card. I recently decided that I wanted to boot RetroPie from a USB stick that I have the ext4 part of the RetroPie image file (/dev/sda1). It boots up fine, but controllers are not detected by the setup script on the first run. The controllers are however detected when it is booting up as I can see them listed before the RetroPie splash screen. I even tried copying the ext4 partition from my working SD card setup to the USB stick with the same result – starts up fine, even launches games but controllers won’t work or even be detected.
Any ideas???