Neo Geo annoying audio bug?

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I am noticing that every now and then, when I launch the Neo Geo core, games come up with no audio, does not happen every time but enough to annoy me. Happens even from cold boot. Usually I would just relaunch the core and then sound would come back.

Any ideas what could be causing this? Thanks!

PS. I am using the launch CORE method for Neo Geo then load the game ROM from there

[FPGA64]

Are you using the latests neogeo core or the "Arcade" Neo Geo core. If the latter its hopelessly out of date.

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Normal core dated 18th April ‘24.

This is happening on Mister Pi.

[FPGA64]

This is the latest Unstable Neogeo from discord that I could find

https://github.com/MiSTer-unstable-nigh ... 05bf4c.rbf

Its from August, From waht i remember it improved sound

[Insert Disk Two]

This is the latest Unstable Neogeo from discord that I could find

https://github.com/MiSTer-unstable-nigh ... 05bf4c.rbf

Its from August, From waht i remember it improved sound

I have managed to replicate the issue (using the official latest ROM) also on "official" DE-10 Nano MiSTer setup, putting my mind at rest that its not a hardware issue with my Pi.

I will start testing the unstable you provided. Another thing I have to remove from the equation is the fact that I was using UniBios 4.0, maybe that is causing issues, I have now reverted to official BIOS to check if the problem will still go on.

[Hodor]

This is the latest Unstable Neogeo from discord that I could find

https://github.com/MiSTer-unstable-nigh ... 05bf4c.rbf

Its from August, From waht i remember it improved sound

I have managed to replicate the issue (using the official latest ROM) also on "official" DE-10 Nano MiSTer setup, putting my mind at rest that its not a hardware issue with my Pi.

I will start testing the unstable you provided. Another thing I have to remove from the equation is the fact that I was using UniBios 4.0, maybe that is causing issues, I have now reverted to official BIOS to check if the problem will still go on.

If my mind doesn´t trick me, I´d say that some sound issue on the core was related precisaly with the UNIBIOS. Or at least I read about it on GitHub several months ago.