No audio in UE5.1 app on Raspberry Pi4

Hi, I’m trying to use a UE5.1 project on my raspberry pi 4. The performances are above my expectations, the 3d graphics work, but there is a huge problem: I can’t get the audio to work.

Unreal sees all audio output devices correctly but I can’t hear anything. Has anyone had the same thing happen? do you have any advice for me?

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One potential solution could be to check that your audio output device is set as the default device in the operating system, and that the volume is turned up.

You can also try using a different audio output device (such as HDMI or the 3.5mm jack) to see if that resolves the issue. Additionally, you can check the Unreal Engine documentation for information on configuring audio settings for different platforms, as well as troubleshooting tips for common audio issues.

If you still don’t get any audio, it could be that the device doesn’t have proper libraries to run the expected audio drivers.

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So is it a “usable” level of performance - I’ve been curious about this myself.

I have no actual input regarding the audio though sorry.

I’ve tried all audio interfaces, but no one works, I’ve also tried the same app on different arm based boards (raspberry pi4 and banana pim5).

From pulse audio vu meter i’m not able to see any sound.

Ave you got any idea about platform related parameters to check?

Try to check if your sound works at all, there’s handy command speaker-test for that. If you hear something it’s problem with UE. If you don’t hear anything it’s a problem with your RPi.

my audio works great with other applications, and speaker-test is ok. I think that the problem is due to the interaction between unreal engine and Pulseaudio.

I found this in pulse audio log:

[pulseaudio 2700]: Error opening PCM device hw:0: Device or resource busy

I’ve got this error only when I run my unreal app, not with other apps.
And I’ve got this problem only on ARM, not on linux x64

I’ve tried different boards (raspberry pi4 and banana pi m5) and different os (raspbian, Arabian, ubuntu mate)

is there any way to make unreal engine interact directly with ALSA without using pulseaudio?

Hi I have been struggling to get ue4 or ue5 on rpi4 for about 4 months and would very much appreciate any help.
I keep getting errors on the script called VulkanDevice.cpp is it possible for anyone to tell me which scripts in the engine files you edited and if possible what u changed in the scripts.
I have been using the GitHub page that explains everything but it’s still not working
Any help would be appreciated
Thanks

what steps did you take to get a compiled game on the Raspberry Pi 4. vulkan setup, drivers, etc. I’m desperate for some guidance. Thank you.