@itiki I think it's related to this problem:
https://forum.recalbox.com/topic/25607/bluetooth-disable-ertm-not-working

@Scavy Ok thanks.

After installing the image on the flash drive, the first run is successful, but then does not work. The ending was correct. What could go wrong?

I work in IT 😉
(but not on linux)
But meanwhile I did some further tests with openELEC and there the DVD device seems to be recognized but the power supply seems to be too low because it lags and the display turns of and on etc.

@redm you must be right, good catch !

@farbkasten I really don't know.
I tried it many times to correct the wiki and take the screenshots, and I didn't have this issue.
Once mapping over, I pressed enter key, and the software asked me to press many time the same button, and that was over.

Did you affect the button to different functions ?
Did you try with an other one remote ?
I have one that get stuck on previous step.

J'ai pas encore pris le temps de réinstaller, j'y ai pensé mais ça me saoûle alors je traîne... Une manette psx originale avec genre un adaptateur smartjoy ? ^_^ C'est une dualshock 1 originale que j'utilise en priorité, et une dualshock 2 originale sinon. Les manettes xbox j'aime moyen la croix de direction, il me faudrait un truc qui ressemble aux manettes playstation. D'ailleurs j'ai des manettes PS3, mais c'est pas possible de les utiliser en filaire hein? Les 8bitdo ont l'air vraiment bien, mais il manque 2 tranches pour jouer à la ps1 non? Edit: réinstall faite, branché 2x et c'est reconnu... Coup de chance ou pas, je ne sais pas, mais c'est bizarre.

Thank you so much, its so easy now!