Hi to all, I searched on the forum in order to find something on this problem but I didn’t find any response to my problem.
I compiled RetroArch from source code for Raspberry Pi in chroot environment on Ubuntu x64 machine.
The cores are working fine except for the audio: I can’t hear anything.
I launch the core with:
./retroarch -L core_name.so /path_to_rom
Any suggestion?
Thanks
Which audio output are you using? HDMI? 3.5 mm?
Can you post a verbose log?
Hi, I’m using HDMI cable but if I connect the earphone to 3.5 mm port audio still doesn’t work.
In which way can I send you a verbose log?
Thanks
EDIT: Here the verbose output, audio driver isn’t loaded
RetroArch [INFO] :: This is RetroArch version 1.5.0 (Git 385539c)
RetroArch [INFO] :: Redirecting save file to "/home/pi/RetroPie/roms/snes/Super Mario Kart (Europe) (Rev 0A).srm".
RetroArch [INFO] :: === Build =======================================
Capabilities: NEON VFPv3 VFPv4
Built: May 23 2017
RetroArch [INFO] :: Version: 1.5.0
RetroArch [INFO] :: Git: 385539c
RetroArch [INFO] :: =================================================
RetroArch [INFO] :: Loading default config.
RetroArch [INFO] :: Looking for config in: "/home/pi/.config/retroarch/retroarch.cfg".
RetroArch [INFO] :: Loading dynamic libretro core from: "/home/pi/retro_machine/snes9x2002_libretro.so"
RetroArch [INFO] :: [overrides] no core-specific overrides found at /home/pi/.config/retroarch/config/Snes9x 2002/Snes9x 2002.cfg.
RetroArch [INFO] :: [overrides] no game-specific overrides found at /home/pi/.config/retroarch/config/Snes9x 2002/Super Mario Kart (Europe) (Rev 0A).cfg.
RetroArch [INFO] :: Shaders: preset directory: /home/pi/.config/retroarch/shaders/presets
RetroArch [INFO] :: Shaders: no game-specific preset found at /home/pi/.config/retroarch/shaders/presets/Snes9x 2002/Super Mario Kart (Europe) (Rev 0A).cgp.
RetroArch [INFO] :: Shaders: no game-specific preset found at /home/pi/.config/retroarch/shaders/presets/Snes9x 2002/Super Mario Kart (Europe) (Rev 0A).glslp.
RetroArch [INFO] :: Shaders: no core-specific preset found at /home/pi/.config/retroarch/shaders/presets/Snes9x 2002/Snes9x 2002.cgp.
RetroArch [INFO] :: Shaders: no core-specific preset found at /home/pi/.config/retroarch/shaders/presets/Snes9x 2002/Snes9x 2002.glslp.
RetroArch [INFO] :: Remaps: remap directory: /home/pi/.config/retroarch/config/remaps
RetroArch [INFO] :: Remaps: no game-specific remap found at /home/pi/.config/retroarch/config/remaps/Snes9x 2002/Super Mario Kart (Europe) (Rev 0A).rmp.
RetroArch [INFO] :: Remaps: no core-specific remap found at /home/pi/.config/retroarch/config/remaps/Snes9x 2002/Snes9x 2002.rmp.
RetroArch [INFO] :: Redirecting save file to "/home/pi/RetroPie/roms/snes/Super Mario Kart (Europe) (Rev 0A).srm".
RetroArch [INFO] :: Environ GET_OVERSCAN: 0
RetroArch [INFO] :: Loading content file: /home/pi/RetroPie/roms/snes/Super Mario Kart (Europe) (Rev 0A).sfc.
RetroArch [INFO] :: Did not find a valid content patch.
RetroArch [INFO] :: CRC32: 0x56410e5e .
RetroArch [INFO] :: Environ SET_PIXEL_FORMAT: RGB565.
No ROM file header found.
"SUPER MARIO KART" [checksum ok] HiROM, 4Mbits, Type: ROM+RAM+BAT+DSP1, Mode: 21, TV: PAL, S-RAM: 2Kb, ROMId: Company:
RetroArch [INFO] :: CHEEVOS system RAM: 0x1d8bf40 131072
RetroArch [INFO] :: CHEEVOS save RAM: 0x1dabf48 2048
RetroArch [INFO] :: CHEEVOS video RAM: 0x1dcbf50 65536
RetroArch [INFO] :: CHEEVOS RTC: (nil) 0
RetroArch [INFO] :: Skipping SRAM load..
RetroArch [INFO] :: Version of libretro API: 1
RetroArch [INFO] :: Compiled against API: 1
RetroArch [INFO] :: [Audio]: Set audio input rate to: 32040.50 Hz.
RetroArch [INFO] :: [Video]: Timings deviate too much. Will not adjust. (Display = 59.94 Hz, Game = 50.01 Hz)
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/2xsal.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/2xScaleHQ.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/barrel-distortion.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/barrel-distortion_lanczos4.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/barrel-distortion_phosphor.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/barrel-distortion_snes.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/Brighter-with_Contrast.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/bsnes_gamma_ramp.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/crt-pi-curvature-vertical.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/crt-pi-curvature.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/crt-pi-vertical.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/crt-pi.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/gameboy-screen-grid.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/gameboy.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/gameboy2.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/hq2x&lcd3x.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/hq2x.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/hq2x2.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/hq2x_lcd3x.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/hq2x_phosphor.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/hq2xwaterpaint.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/hq2xwaterpaintscanline.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/hq4x.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/hq4x_lcd3x.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/nds.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/nedi.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/phosphor.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/snes.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/snes2.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/snes_hq2x.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/snes_hq2xwaterpaint.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/snes_hq2xwaterpainthicontrast.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/snes_hq2xwaterpaintscanline.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/snes_lcd3x.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/snes_phosphor.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/snes_scanline.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/snes_waterpaint.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/stock.glsl"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/super-2xsai.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/super-eagle.glslp"
RetroArch [INFO] :: Found shader "/home/pi/.config/retroarch/shaders/xbr-lv1-noblend.glslp"
RetroArch [INFO] :: [Video]: Video @ 897x672
RetroArch [INFO] :: [EGL] Falling back to eglGetDisplay
RetroArch [INFO] :: [EGL]: EGL version: 1.4
RetroArch [INFO] :: [EGL]: Current context: 0x1.
RetroArch [INFO] :: [GL]: Found GL context: videocore
RetroArch [INFO] :: [GL]: Detecting screen resolution 1920x1080.
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] :: [GL]: Using resolution 1920x1080
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] :: [GLSL]: Found GLSL vertex shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: [GLSL]: Found GLSL fragment shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: [GLSL]: Linking GLSL program.
RetroArch [INFO] :: [GLSL]: Found GLSL vertex shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: [GLSL]: Found GLSL fragment shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: [GLSL]: Linking GLSL program.
RetroArch [INFO] :: [GLSL]: Found GLSL vertex shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: [GLSL]: Found GLSL fragment shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: [GLSL]: Linking GLSL program.
RetroArch [INFO] :: [GLSL]: Found GLSL vertex shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: [GLSL]: Found GLSL fragment shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: [GLSL]: Linking GLSL program.
RetroArch [INFO] :: [GLSL]: Found GLSL vertex shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: [GLSL]: Found GLSL fragment shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: [GLSL]: Linking GLSL program.
RetroArch [INFO] :: [GLSL]: Found GLSL vertex shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: [GLSL]: Found GLSL fragment shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: [GLSL]: Linking GLSL program.
RetroArch [INFO] :: [GLSL]: Found GLSL vertex shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: [GLSL]: Found GLSL fragment shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: [GLSL]: Linking GLSL program.
RetroArch [INFO] :: [GLSL]: Found GLSL vertex shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: [GLSL]: Found GLSL fragment shader.
RetroArch [INFO] :: Shader log: Compiled
RetroArch [INFO] :: [GLSL]: 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] :: [Font]: Using font rendering backend: freetype.
RetroArch [INFO] :: [Video]: 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] :: [Joypad]: Found joypad driver: "udev".
RetroArch [ERROR] :: Failed to initialize audio driver. Will continue without audio.
RetroArch [INFO] :: [Menu]: Found menu display driver: "menu_display_gl".
RetroArch [ERROR] :: Failed to create rendering backend: freetype.
Failed to open /home/pi/.config/retroarch/assets/xmb/monochrome/font.ttf: No such file or directory
RetroArch [ERROR] :: Failed to create rendering backend: stb.
RetroArch [INFO] :: [Font]: Using font rendering backend: bitmap.
RetroArch [ERROR] :: Failed to create rendering backend: freetype.
Failed to open /home/pi/.config/retroarch/assets/xmb/monochrome/font.ttf: No such file or directory
RetroArch [ERROR] :: Failed to create rendering backend: stb.
RetroArch [INFO] :: [Font]: Using font rendering backend: bitmap.
RetroArch [INFO] :: Loading history file: [/home/pi/.config/retroarch/content_history.lpl].
RetroArch [INFO] :: Loading history file: [/home/pi/.config/retroarch/content_image_history.lpl].
RetroArch [INFO] :: [GL]: VSync => on
RetroArch [INFO] :: [EGL]: eglSwapInterval(1)
RetroArch [ERROR] :: failed_to_start_audio_driver
RetroArch [ERROR] :: failed_to_start_audio_driver
RetroArch [ERROR] :: failed_to_start_audio_driver
RetroArch [INFO] :: Saved new config to "/home/pi/.config/retroarch/retroarch.cfg".
RetroArch [INFO] :: Saving RAM type #0 to "/home/pi/RetroPie/roms/snes/Super Mario Kart (Europe) (Rev 0A).srm".
RetroArch [INFO] :: Saved successfully to "/home/pi/RetroPie/roms/snes/Super Mario Kart (Europe) (Rev 0A).srm".
RetroArch [INFO] :: [Video]: Does not have enough samples for monitor refresh rate estimation. Requires to run for at least 4096 frames.
RetroArch [INFO] :: Removing temporary content file: /home/pi/RetroPie/roms/snes/Super Mario Kart (Europe) (Rev 0A).sfc.
RetroArch [INFO] :: [Video]: Does not have enough samples for monitor refresh rate estimation. Requires to run for at least 4096 frames.Try running retroarch --features to see which drivers you compiled in and then go to settings > driver and make sure you’re using one that actually exists. If it continues giving you problems, try switching to another.
Thanks, I’ll try and I’ll give you a feedback.
The output of retroarch --features is this:
Features: LibretroDB: LibretroDB support: yes Command: Command interface support: yes Network Command: Network Command interface support: yes SDL: SDL input/audio/video drivers: no SDL2: SDL2 input/audio/video drivers: yes X11: X11 input/video drivers: yes wayland: Wayland input/video drivers: yes Threads: Threading support: yes Vulkan: Vulkan video driver: no OpenGL: OpenGL video driver support: yes OpenGL ES: OpenGLES video driver support: yes XVideo: Video driver: yes UDEV: UDEV/EVDEV input driver support: yes EGL: Video context driver: yes KMS: Video context driver: yes OpenVG: Video context driver: yes CoreAudio: Audio driver: no ALSA: Audio driver: yes OSS: Audio driver: yes Jack: Audio driver: no RSound: Audio driver: no RoarAudio: Audio driver: no PulseAudio: Audio driver: yes DirectSound: Audio driver: no WASAPI: Audio driver: no XAudio2: Audio driver: no OpenAL: Audio driver: no OpenSL: Audio driver: no 7zip: 7zip extraction support: yes zlib: .zip extraction support: yes External: External filter and plugin support: yes Cg: Fragment/vertex shader driver: no GLSL: Fragment/vertex shader driver: yes HLSL: Fragment/vertex shader driver: yes libxml2: libxml2 XML parsing: yes SDL_image: SDL_image image loading: no rpng: PNG image loading/encoding: yes rjpeg: JPEG image loading: yes FBO: OpenGL render-to-texture (multi-pass shaders): yes Dynamic: Dynamic run-time loading of libretro library: yes FFmpeg: On-the-fly recording of gameplay with libavcodec: no FreeType: TTF font rendering driver: yes CoreText: TTF font rendering driver (for OSX and/or iOS): no Netplay: Peer-to-peer netplay: yes Python: Script support in shaders: no Libusb: Libusb support: no Cocoa: Cocoa UI companion support (for OSX and/or iOS): no Qt: Qt UI companion support: no AVFoundation: Camera driver: no Video4Linux2: Camera driver: no
Yes, but this is not the problem. RetroArch failed to initialized the audio driver
I tried all the audio driver available, ALSA, OSS, ALSATHREAD and PULSE but the audio still doesn’t work 
Please provide the output of aplay -L
Thank you.
Sorry for the photo but at the moment I don’t have a better way to show you the output 
Hi,
as I wrote before it’s set 
The problem isn’t the output type, force HDMI instead of DVI doesn’t resolve this problem:
RetroArch [ERROR] :: Failed to initialize audio driver. Will continue without audio
This is a mistery! Another idea?
Thanks
Did you try to change audio_device from the gui ?
What is the output of ?
grep audio_device ~/.config/retroarch/retroarch.cfg
Thank you.
This evening I’ll try and I’ll give you a feedback.
Many thanks, you’re very kind
In that file the audio_device is not set, the output is “”
I wrote
audio_device=“hdmi:CARD=ALSA,DEV=0”
but still doesn’t work
Thanks for your help
Ok, I found the problem. In the retroarch.cfg I set
audio_driver = “ALSA” audio_device = “sysdefault:CARD=ALSA”
like the output of
aplay -L
Thanks for your tip that put me on the right way 
No problem you are welcome. But you should not have to edit the configuration file, you can change audio device from the gui.
Thanks, I really appreciated