RPi4 Retropie 4.6.1 sound error

[sexbeer]

after the last update (65bffe55), an error appears in es_log.txt every time you access the sound card

VolumeControl::init() - Failed to find mixer elements!

although the sound is present both through the composite output and through the hdmi, in the ES's sound settings the system volume is 0%. when changing to any value, it returns to zero the next time you try to change it

[Clyde]

Just search the forum for failed to find mixer elements and look for posts younger than a month, then you'll find several threads that explain this problem and give some solutions.

[sexbeer]

@Clyde thanks

[movisman]

@sexbeer

I had a similar issue. It's related to a Pi OS update rather than RetroPie itself. There appears to be a few solutions depending on your setup, but the quickest, hassle free way of fixing for the time being is to open up your /boot/cmdline.txt and add the following to the end, which enables ALSA compatible mode:

snd-bcm2835.enable_compat_alsa=1

If you haven't changed anything else to try to get it to work, a reboot should be all that is required.

Thanks