Comment # 29 on bug 1177169 from Axel Braun

(In reply to Kasimir _ from comment #28)
> I tested version
> openSUSE-Tumbleweed-ARM-X11-raspberrypi.aarch64-2021.02.19-Build1.2 and did
> the following: 
> in config.txt
> > adding this line in [rp4] section:
> >   dtoverlay=vc4-kms-v3d-pi4,cma-default
> 
> > and removing 
> >   dtoverlay=disable-vc4
> >   dtoverlay=disable-v3d
> 
> With a normal user, I could play an audio stream in Firefox and had sound on
> the HDMI.
> 
> The same audio stream was not played as root.

I can confirm this! Sound via HDMI for user, but not for root.
Jack output still dead.

@Takashi - is there a chance that the driver is backported to Leap 15.2/3?