Try adding -v.
Code
LibreELEC:~/.kodi/addons/script.gamestarter/resources/bin # ./retroarch -v -c /storage/.config/retroarch/retroarch.cfg -L /storage/.config/retroarch/cores/scummvm_libretro.so
RetroArch [INFO] :: === Build =======================================
Capabilities: NEON VFPv3 VFPv4
Built: Jul 19 2016
RetroArch [INFO] :: Version: 1.3.6
RetroArch [INFO] :: Git: 0f8bbb6
RetroArch [INFO] :: =================================================
RetroArch [INFO] :: Config: loading config from: /storage/.config/retroarch/retroarch.cfg.
RetroArch [INFO] :: Resetting undo buffers.
RetroArch [INFO] :: Loading dynamic libretro core from: "/storage/.config/retroarch/cores/scummvm_libretro.so"
RetroArch [INFO] :: Environ SET_SUPPORT_NO_GAME: yes.
RetroArch [INFO] :: Environ GET_LOG_INTERFACE.
RetroArch [INFO] :: Environ SET_PIXEL_FORMAT: RGB565.
RetroArch [INFO] :: Environ SET_KEYBOARD_CALLBACK.
RetroArch [INFO] :: Content loading skipped. Implementation will load it on its own.
RetroArch [INFO] :: Environ SET_INPUT_DESCRIPTORS:
RetroArch [INFO] :: RetroPad, User 1, Button "B (bottom)" => "Mouse Button 2"
RetroArch [INFO] :: RetroPad, User 1, Button "Select" => "ScummVM GUI"
RetroArch [INFO] :: RetroPad, User 1, Button "Start" => "Esc"
RetroArch [INFO] :: RetroPad, User 1, Button "D-Pad Up" => "Mouse Up"
RetroArch [INFO] :: RetroPad, User 1, Button "D-Pad Down" => "Mouse Down"
RetroArch [INFO] :: RetroPad, User 1, Button "D-Pad Left" => "Mouse Left"
RetroArch [INFO] :: RetroPad, User 1, Button "D-Pad Right" => "Mouse Right"
RetroArch [INFO] :: RetroPad, User 1, Button "A (right)" => "Mouse Button 1"
RetroArch [INFO] :: Environ SYSTEM_DIRECTORY: "/storage/emulators/bios".
RetroArch [INFO] :: Version of libretro API: 1
RetroArch [INFO] :: Compiled against API: 1
RetroArch [INFO] :: Set audio input rate to: 44063.25 Hz.
RetroArch [INFO] :: Video @ 1920x1440
RetroArch [INFO] :: [EGL]: EGL version: 1.4
RetroArch [INFO] :: [EGL]: Current context: 0x1.
RetroArch [INFO] :: Found GL context: videocore
RetroArch [INFO] :: Detecting screen resolution 1280x720.
RetroArch [INFO] :: [EGL]: eglSwapInterval(1)
RetroArch [INFO] :: [EGL]: eglSwapInterval(1)
RetroArch [INFO] :: [GL]: Vendor: Broadcom, Renderer: VideoCore IV HW.
RetroArch [INFO] :: [GL]: Version: OpenGL ES 2.0.
RetroArch [INFO] :: Querying GL extension: ARB_texture_non_power_of_two => doesn't exist
RetroArch [INFO] :: Querying GL extension: OES_texture_npot => exists
RetroArch [INFO] :: Querying GL extension: BGRA8888 => exists
RetroArch [WARN] :: [GL]: GLES implementation does not have BGRA8888 extension.
32-bit path will require conversion.
RetroArch [INFO] :: Querying GL extension: GL_EXT_unpack_subimage => doesn't exist
RetroArch [INFO] :: Querying GL extension: EXT_sRGB => doesn't exist
RetroArch [INFO] :: GL: Using resolution 1280x720
RetroArch [INFO] :: [GL]: Default shader backend found: glsl.
RetroArch [INFO] :: [Shader driver]: Using GLSL shader backend.
RetroArch [WARN] :: [GL]: Stock GLSL shaders will be used.
RetroArch [INFO] :: Found GLSL vertex shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: Found GLSL fragment shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: Linking GLSL program.
RetroArch [INFO] :: Found GLSL vertex shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: Found GLSL fragment shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: Linking GLSL program.
RetroArch [INFO] :: Found GLSL vertex shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: Found GLSL fragment shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: Linking GLSL program.
RetroArch [INFO] :: Found GLSL vertex shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: Found GLSL fragment shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: Linking GLSL program.
RetroArch [INFO] :: Found GLSL vertex shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: Found GLSL fragment shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: Linking GLSL program.
RetroArch [INFO] :: [GL]: Using 4 textures.
RetroArch [INFO] :: [GL]: Loaded 1 program(s).
RetroArch [INFO] :: Querying EGL extension: KHR_image => exists
RetroArch [INFO] :: Using font rendering backend: bitmap.
RetroArch [INFO] :: Graphics driver did not initialize an input driver. Attempting to pick a suitable driver.
RetroArch [INFO] :: [udev] Adding device /dev/input/event0 as type ID_INPUT_KEYBOARD.
RetroArch [INFO] :: [udev] Adding device /dev/input/mouse0 as type ID_INPUT_KEYBOARD.
RetroArch [INFO] :: [udev] Adding device /dev/input/event0 as type ID_INPUT_MOUSE.
RetroArch [INFO] :: [udev] Adding device /dev/input/mouse0 as type ID_INPUT_MOUSE.
RetroArch [INFO] :: Found joypad driver: "udev".
RetroArch [INFO] :: ALSA: Using signed 16-bit format.
RetroArch [INFO] :: ALSA: Period size: 768 frames
RetroArch [INFO] :: ALSA: Buffer size: 3072 frames
RetroArch [INFO] :: ALSA: Can pause: no.
RetroArch [INFO] :: Found menu display driver: "menu_display_gl".
RetroArch [INFO] :: Querying GL extension: ARB_framebuffer_object => doesn't exist
RetroArch [INFO] :: Using font rendering backend: freetype.
RetroArch [INFO] :: Using font rendering backend: freetype.
RetroArch [INFO] :: Disconnecting device from port 1.
RetroArch [INFO] :: SRAM will not be saved.
RetroArch [INFO] :: null: [/storage/.config/retroarch/content_history.lpl].
RetroArch [INFO] :: [GL]: VSync => on
RetroArch [INFO] :: [EGL]: eglSwapInterval(1)
Segmentation fault (core dumped)
Display More
Hm, everything seems ok until the crash, doesn't it?