Audio firmware missing when overlay file system enabled

[mroutsinaus]

Hi. Thanks for this project!

I am using a rpi4 2gb and the latest image chilipie-kiosk-3.0.0-rc4.img.tar.gz
I have edited the xsession file to run chrome in kiosk mode.
Everything is working beautifully without overlay file system enabled.

I am getting some weird behaviour when enabling the overlay file system from raspi-config.

I get the errors:
W: Possible missing firmware /lib/firmware/rtl_nic/rtl8156b-2.fw for built in driver r8152
W: Possible missing firmware /lib/firmware/rtl_nic/rtl8156a-2.fw for built in driver r8152
W: Possible missing firmware /lib/firmware/rtl_nic/rtl8156c-1.fw for built in driver r8152

Then after a reboot the error:
vc4_hdmi fef00700.hdmi: Could not register sound card: -517

Also, the boot text shows up again at the bottom of the screen.

Any idea what is happening here? It seems like enabling the overlay fs somehow disables the sound driver.