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PulseAudio and SDL1.2 vs. SDL2.0 -> SDL_AUDIODRIVER ...
https://github.com/ValveSoftware/steam-for-linux/issues/1849
You might just wanna try to set it (SDL_AUDIODRIVER) to 'pulse', then check which games still have working Audio, and then set it to 'pulseaudio'. If your problem is related to this bug/issue report then some games will have sound and others not, and as soon as you change it to 'pulse' (and restart steam to get the new env-settings) then the former working sound-games …
FAQUsingSDL - SDL Wiki
https://wiki.libsdl.org/FAQUsingSDL
You can set the environment variable "SDL_AUDIODRIVER" to the name of the driver you want to use. The drivers available depend on the platform and SDL compile-time options. Here is a partial list for some platforms: Linux Win32 What environment variables are used by SDL?
SDL_envvars - Simple DirectMedia Layer
https://www.libsdl.org/release/SDL-1.2.15/docs/html/sdlenvvars.html
SDL_AUDIODRIVER Selects the audio driver for SDL to use. order they are tried if this variable is not set: SDL_DISKAUDIOFILE The name of the output file for the "disk" audio driver. set, the name sdlaudio.rawis used. SDL_DISKAUDIODELAY For the "disk" audio driver, how long to wait (in ms) before writing The default is 150 ms. SDL_DSP_NOSELECT
TUMBLEWEED Kdenlive crashing - sdl2_audio ] Failed to ...
https://forums.opensuse.org/showthread.php/558461-Kdenlive-crashing-sdl2_audio-Failed-to-initialize-SDL-Audio-target-pulse-not-available-quot/page2
Indeed, "export SDL_AUDIODRIVER=pulse" apparently is incorrect, and only happened to work by luck with previous SDL versions (for years though...). So changing it to "pulseaudio" in /etc/profile.d/pulseaudio.sh is actually the proper fix. There is a possible downside to this however: libSDL1 maybe doesn't recognize "pulseaudio" yet, only "pulse".
Launch failing on SDL/ALSA/Pulse :: Prison Architect ...
https://steamcommunity.com/app/233450/discussions/0/864973981060184706/
You can try forcing the pulseaudio driver by setting the environment variable SDL_AUDIODRIVER to 'pulse' before you start the game. Note that there is a good reason it's not default; the audio will have very regular glitching, which can be somewhat remedied by setting the pulseaudio daemon to run at realtime priority.
Sound in DOSBox
https://blog.electronsmith.com/?p=164
I needed a way to tell the SDL (Simple Direct Media Layer) that DosBox should just use my soundcard like KDE was doing. One of the steps that kept coming up in the PulseAudio “fixes” was to type the line: export SDL_AUDIODRIVER=pulse or export SDL_AUDIODRIVER=esd before running DOSBox.
UPDATE NEWS - STEAM - steamcommunity.com
https://steamcommunity.com/news/client?skin=0&id=1200
Improve compatibility with deprecated environment variable setting SDL_AUDIODRIVER=pulse (steam-runtime#452, steam-runtime#459) Use readlink -f instead of realpath for better compatibility with Ubuntu 14.04; Improve handling of OSs that do not install zenity; Heavy runtime 0.20210907.0: Add libcups.so to the runtime (steam-for-linux#8031) Steam ...
Can't get audio to work in Metro 2033 Redux : linux_gaming
https://www.reddit.com/r/linux_gaming/comments/7e5t9x/cant_get_audio_to_work_in_metro_2033_redux/
Steam command line options: LD_LIBRARY_PATH="/usr/lib32:$LD_LIBRARY_PATH" vblank_mode=1 SDL_AUDIODRIVER=pulse primusrun %command%. Kinda mixed the solutions, though even using them individually don't work. Attempted solution I found on Steam. The other attempted solution from this subreddit.
Raspberry PI: Enable MPlayer and VLC audio on ... - Defuse
https://defuse.ca/blog/raspberry-pi-enable-mplayer-and-vlc-audio-on-rasbian.html
AO: [pulse] Init failed: Connection refused Failed to initialize audio driver 'pulse' [AO_ALSA] Unable to set hw-parameters: Invalid argument Failed to initialize audio driver 'alsa' [AO SDL] Samplerate: 44100Hz Channels: Stereo Format floatle [AO SDL] using aalib audio driver. [AO SDL] Unsupported audio format: 0x1d.
c++ - Initializing SDL_Mixer gives error "No available ...
https://stackoverflow.com/questions/10465202/initializing-sdl-mixer-gives-error-no-available-audio-device
"If you didn't build your own SDL, maybe you can force it to use a different audio path: SDL_AUDIODRIVER=pulse ./mytestprogram or SDL_AUDIODRIVER=alsa ./mytestprogram" I did not try that as the first solution was the good one in my case.
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