Error : "SDL could not initialize! SDL_Error: dsp: No such audio device"

Question

I'm currently working on a personnal project and I have an issue with SDL_mixer or Audio

I can compile without any problems but when I try to execute the program I got this error:

"SDL could not initialize! SDL_Error: dsp: No such audio device"

I'm compiling with cmake, this is my CMakeList.txt :

cmake_minimum_required(VERSION 3.0)

set(CMAKE_BUILD_TYPE Debug)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14")
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/")

project(R-TYPE)

find_package(SDL2 REQUIRED)
find_package(SDL2_image REQUIRED)
find_package(SDL2_ttf REQUIRED)
find_package(SDL2_mixer REQUIRED)

include_directories(${SDL2_INCLUDE_DIRS} ${SDL2_IMAGE_INCLUDE_DIRS} ${SDL2_TTF_INCLUDE_DIRS} ${SDL2_MIXER_INCLUDE_DIRS})

add_executable(
    R-TYPE
    main.cpp
    Render/renderWindow.cpp
    Menu/menu.cpp
)
target_link_libraries(R-TYPE ${SDL2_LIBRARIES} ${SDL2_IMAGE_LIBRARIES} ${SDL2_TTF_LIBRARIES} ${SDL2_MIXER_LIBRARIES})

this is the function where I got the error from :

int main(int argc, char* args[])
{
    if (SDL_Init(SDL_INIT_EVERYTHING) < 0) 
    {
        std::cout << "SDL could not initialize! SDL_Error: " << SDL_GetError() << std::endl;
        return 84;
    }
    RenderWindow window("R-TYPE", 1920, 1080);

    while (gameRunning)
    {
        game(window);
    }
    window.cleanUp();
    SDL_Quit();
    TTF_Quit();
    return 0;
}

I'm on UBUNTU, how can I fix this?

I already tried to install libasound2-dev libpulse-dev but that didn't work

What does that mean ? I build the SDL library once but I don't even know if my cmakelist.txt is taking the library that I build or not — Jarche, Jan 27 '23 at 13:36
I compile with the cmakelist btw, idk if its an answer to your question — Jarche, Jan 27 '23 at 13:37
*"I build the SDL library once"* Yes, that's what I was asking. Perhaps you didn't do it correctly? E.g. failed to install the required dependencies? This can produce a not-fully-functioning SDL. Remove it and install from `apt` instead. — HolyBlackCat, Jan 27 '23 at 13:39
I did that command : sudo apt-get install libsdl2-dev tells me that this lib is already installed with the highest version of it — Jarche, Jan 27 '23 at 13:43
If you installed self-built SDL to /usr/local, you must also purge it from there. — HolyBlackCat, Jan 27 '23 at 13:46
Yeah I think I missbuild the fcking library and now its broking the whole thing.... How can I purge SDL from /usr/local/ ? — Jarche, Jan 27 '23 at 13:56
Not sure what would be a good way. `/usr/local` contains only empty directories by default, so you can delete the whole directory. Or look at the contents and search for SDL2 (look in `/usr/local/include` and `/usr/local/lib`, perhaps `/usr/local/bin` too). — HolyBlackCat, Jan 27 '23 at 13:59
ok nice I did it, I deleted /usr/local/include/SDL2. What I have to do now ? — Jarche, Jan 27 '23 at 14:02
Delete stuff from `/usr/local/lib` too. There are probably `libSDL2....` in here. Then everything should just work. — HolyBlackCat, Jan 27 '23 at 14:03
Yes, all of them. Use `find /usr/local -iname '*sdl*'` to search for the files. Yes, then rebuilding your project should work. — HolyBlackCat, Jan 27 '23 at 14:08
ok but now my CMakeList.txt is not working anymore... he can't find SDL2_INCLUDE_DIR — Jarche, Jan 27 '23 at 14:11

score 2 · Answer 1 · answered Jan 27 '23 at 16:20

2

This is caused by manually building SDL2 and/or SDL2_mixer (without having all required dependencies installed).

Installing them from apt instead fixes the issue. The self-built versions had to be purged from /usr/local.

answered Jan 27 '23 at 16:20

HolyBlackCat

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how? apt install ? – Beryl Amend Jul 08 '23 at 21:26
@BerylAmend Yes, `sudo apt install libsdl2-dev`. – HolyBlackCat Jul 08 '23 at 21:42
thanks ,but im using colab and it didnt work do u know what should i do to solve the error: ALSA: Couldn't open audio device: No such file or directory – Beryl Amend Jul 08 '23 at 21:45
@BerylAmend You should post a new question about it, and include all the details. – HolyBlackCat Jul 09 '23 at 08:19
yes i did but they closed it! – Beryl Amend Jul 10 '23 at 07:37
1

@BerylAmend Then you need to get it reopened (or repost it in an improved form to prevent closure). If you don't understand how to improve the question, ask how to improve it on https://meta.stackoverflow.com/ – HolyBlackCat Jul 10 '23 at 09:07

Error : "SDL could not initialize! SDL_Error: dsp: No such audio device"

1 Answers1