@edmaul69 it's identified as a USB game pad, it's only the up/down axis that won't work, I'll try the lr-vice tomorrow, I can live without daphne :)

@IWANIAK

has anyone experienced this?

With these types of things, there are usually cases to be found where others have experienced similar issues. However, your case may be different. It will be much easier to help you specifically if you post the requested information about your setup found at https://retropie.org.uk/forum/topic/3/read-this-first.

@edmaul69 hi. yes all changes were made within the RetroArch GUI. I checked QuickMenu -> Controls and from Settings -> Input. Both looked ok.

Ok update I have worked out this is partly my own stupidity and partly the Xin Mo's fault.
Basicly everything is inverted in some way shape or form.

The 2 sticks are inverted (P1 is actually P2 and visa versa) And also my p1 stick is inverted directionaly (Up is Down etc

Why the hell this is the way it is I do not know as I have wired them to the correct sides of the board of the Xin Mo etc so thats a bit confusing (Inverted wireing diagram maybe?)

Either way I have sorted all this out by inverting all the controls in retroarch and swapping out the odd inputs.

So all sorted :)

hey mate, i'm stupid.
i wiring alla exactly buttons and joy of player 1 in player 1 side of xin mo.
and player 2 in p0 side of xin-mo.
i unmount all wirings, and so, i after swap all wiring:
so
player 1wired to p0 side
player 2wiredto p1 side

joystick of player 1 and 2 in up and down movements WORKS,
select and start of p1are swapped after mapping and reboot,
select and start of p2the same swapped after mapping and reboot,

i can fix this about swapping select and start of player1?

here my cmdline.txt

# code block dwc_otg.lpm_enable=0 console=serial0,115200 console=tty2 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait quiet loglevel=3 logo.nologo consoleblank=0 usbhid.quirks=0x16c0:0x05e1:0x040 plymouth.enable=0

@Ghost-Note

I didn't no, but it depends on your controller. You would have to modify the pins to pick up 4 players.