I have a very similar issue to RomMon. I have a new install of LibreELEC-Generic.x86_64-8.0-devel-20170621. I have an airmouse / keyboard combo and a DS3 controller, and both work fine... until I go into retroarch. If I leave the DS3 unconnected, the airmouse works in the interface and to control the games, but the games are almost uncontrollable due to the airmouse's button layout ( which is of course nobody's fault =D ). If I connect the DS3 sometimes the airmouse stops working completely and sometimes the left / right work only. The DualShock3 will exhibit the same issues at the same time.
My apologies for not having any logs at this time, I will post them shortly as I have time.
Display MoreAhaaaaaa. I had my two DS3 controllers working in RetroArch using LibreELEC-Generic.x86_64-8.2-devel-20171016 following #2,063. But after an downgrade/restore to LibreELEC-Generic.x86_64-8.0-devel-20170621, and upgrade again to Generic.x86_64-8.2-devel-20171016, I'm not able to get the DS3 controllers working in RetroArch...
Tried following #2,063 again, didn't work.
But even copying the following two files from a backup of the working situation doesn't help:
/storage/.config/retroarch/retroarch.cfg
/storage/.config/retroarch/autoconfig/udev/PLAYSTATION(R)3 Controller.cfg
There is a change in controller behavior, where if I connect the DS3's with the RetroArch menu open it is continue scrolling down, and left/right of the D-pad is working. But the keyboard is not working while a controller is connected, and the other buttons don't work.
Are there other files I need to restore?