C'était les logs aprés que le mapping. se soit fait péter, ...
Et voici le retour de la meme commande aprés une install et config propre des 2 manettes :
# sdl2-jstest --list
error: failed to read gamecontrollerdb.txt: Invalid RWops
Found 2 joystick(s)
Joystick Name: '8Bitdo SN30 Pro'
Joystick Path: '/dev/input/event3'
Joystick GUID: 05000000c82d00000161000000010000
Joystick Number: 0
Number of Axes: 6
Number of Buttons: 16
Number of Hats: 1
Number of B***s: 0
GameControllerConfig:
Name: '8Bitdo SN30 Pro'
Mapping: '05000000c82d00000161000000010000,8Bitdo SN30 Pro,a:b0,b:b1,x:b3,y:b4,back:b10,guide:b12,start:b11,leftstick:b13,rightstick:b14,leftshoulder:b6,rightshoulder:b7,dpup:h0.1,dpdown:h0.4,dpleft:h0.8,dpright:h0.2,leftx:a0,lefty:a1,lefttrigger:a2,righttrigger:a3,platform:Linux'
Axis code 0: 0
Axis code 1: 1
Axis code 2: 2
Axis code 3: 5
Axis code 4: 9
Axis code 5: 10
Button code 0: 304
Button code 1: 305
Button code 2: 306
Button code 3: 307
Button code 4: 308
Button code 5: 309
Button code 6: 310
Button code 7: 311
Button code 8: 312
Button code 9: 313
Button code 10: 314
Button code 11: 315
Button code 12: 316
Button code 13: 317
Button code 14: 318
Button code 15: 319
Hat code 0: 16
Joystick Name: '8Bitdo SN30 Pro'
Joystick Path: '/dev/input/event8'
Joystick GUID: 05000000c82d00000161000000010000
Joystick Number: 1
Number of Axes: 6
Number of Buttons: 16
Number of Hats: 1
Number of B***s: 0
GameControllerConfig:
Name: '8Bitdo SN30 Pro'
Mapping: '05000000c82d00000161000000010000,8Bitdo SN30 Pro,a:b0,b:b1,x:b3,y:b4,back:b10,guide:b12,start:b11,leftstick:b13,rightstick:b14,leftshoulder:b6,rightshoulder:b7,dpup:h0.1,dpdown:h0.4,dpleft:h0.8,dpright:h0.2,leftx:a0,lefty:a1,lefttrigger:a2,righttrigger:a3,platform:Linux'
Axis code 0: 0
Axis code 1: 1
Axis code 2: 2
Axis code 3: 5
Axis code 4: 9
Axis code 5: 10
Button code 0: 304
Button code 1: 305
Button code 2: 306
Button code 3: 307
Button code 4: 308
Button code 5: 309
Button code 6: 310
Button code 7: 311
Button code 8: 312
Button code 9: 313
Button code 10: 314
Button code 11: 315
Button code 12: 316
Button code 13: 317
Button code 14: 318
Button code 15: 319
Hat code 0: 16```