Lost All Audio After Update to RetroPie 4.6.8

[George Spiggott]

Hi, I've just updated to 4.6.8 from an earlier 4.6.x build and I have lost all audio. I am running the KMS driver with the following changes to my config.txt

dtparam=audio=on
dtoverlay=vc4-kms-v3d,noaudio

I tried changing these lines but still no audio.

#dtparam=audio=on
dtoverlay=vc4-kms-v3d

Before the update I did today my audio was working fine.

Pi Model or other hardware: 4B 4GB (1st revision)
Power Supply used: Pi Official
RetroPie Version Used: 4.6.8
Built From: Official 4.6.0 image
USB Devices connected: None
Controller used: PS3 Sixaxis
Advice taken from this thread: https://retropie.org.uk/forum/topic/25370/good-news-regarding-tearing-and-low-emulationstation-performance-on-pi-4/77?_=1602013079808 (pre this update)

Can anyone help? Thanks.

[Thorr69]

Did you look here, too?
https://retropie.org.uk/forum/topic/26628/audio-issues-after-latest-raspbian-updates

[George Spiggott]

I'm trying but I get the following error if I try to edit anything except headphones.

"This sound device does not have any controls."

To get any audio settings to function I have changed my config.txt to the following.

dtparam=audio=on
dtoverlay=vc4-kms-v3d

[George Spiggott]

On a hunch I decided to do another update and change my audio settings in my config.txt back. I now have audio back.

Is the update process sensitive to the monitor features? The monitor I had connected may have had no speakers. I am thinking maybe the HDMI audio drivers got uninstalled in the previous update.

[mitu]

RetroPie updates have nothing to do with the audio - it's the OS updates (kernel/firmware) that can affect it. Of course, using an experimental/beta driver might not be the most stable configuration at this time, so you might encounter issues with it from kernel/firmware version to another.