No audio from NVIDIA graphics card on RHEL

I am running RHEL 8.6, nvidia driver 515.65.01, quadro p6000 GPU, HP z31x monitor.
I should be able to hear audio through the monitor(lineout) from the NVIDIA Audio card. The card is seen on lspci, lshw, /proc/asound/cards but not on GNOME Settings Sound (the Onboard is though). Even if I try a
aplay --device plughw:CARD=NVidia,DEV=3 /usr/share/sounds/alsa/Noise.wav the card is found ok but I get no sound. The onboard works fine. It works fine through Windows. Maybe the fact GNOME cannot see it suggests theres an issue.

cat /proc/asound/cards
0 [PCH ]: HDA-Intel - HDA Intel PCH
HDA Intel PCH at 0xc3330000 irq 84
1 [NVidia ]: HDA-Intel - HDA NVidia
HDA NVidia at 0xc3000000 irq 85

lspci
04:00.1 Audio device: NVIDIA Corporation GP102 HDMI Audio Controller (rev a1)
aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
pulse
PulseAudio Sound Server
default
Default ALSA Output (currently PulseAudio Sound Server)
sysdefault:CARD=PCH
HDA Intel PCH, ALC221 Analog
Default Audio Device
front:CARD=PCH,DEV=0
HDA Intel PCH, ALC221 Analog
Front output / input
surround21:CARD=PCH,DEV=0
HDA Intel PCH, ALC221 Analog
2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=PCH,DEV=0
HDA Intel PCH, ALC221 Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=PCH,DEV=0
HDA Intel PCH, ALC221 Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=PCH,DEV=0
HDA Intel PCH, ALC221 Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=PCH,DEV=0
HDA Intel PCH, ALC221 Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=PCH,DEV=0
HDA Intel PCH, ALC221 Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
hdmi:CARD=NVidia,DEV=0
HDA NVidia, HDMI 0
HDMI Audio Output
hdmi:CARD=NVidia,DEV=1
HDA NVidia, HDMI 1
HDMI Audio Output
hdmi:CARD=NVidia,DEV=2
HDA NVidia, HDMI 2
HDMI Audio Output
hdmi:CARD=NVidia,DEV=3
HDA NVidia, HDMI 3
HDMI Audio Output
hdmi:CARD=NVidia,DEV=4
HDA NVidia, HDMI 4
HDMI Audio Output
hdmi:CARD=NVidia,DEV=5
HDA NVidia, HDMI 5
HDMI Audio Output
hdmi:CARD=NVidia,DEV=6
HDA NVidia, HDMI 6
HDMI Audio Output

lshw
description: Audio device
product: GP102 HDMI Audio Controller
vendor: NVIDIA Corporation
physical id: 0.1
bus info: pci@0000:04:00.1
logical name: card1
logical name: /dev/snd/controlC1
logical name: /dev/snd/hwC1D0
logical name: /dev/snd/pcmC1D10p
logical name: /dev/snd/pcmC1D11p
logical name: /dev/snd/pcmC1D12p
logical name: /dev/snd/pcmC1D3p
logical name: /dev/snd/pcmC1D7p
logical name: /dev/snd/pcmC1D8p
logical name: /dev/snd/pcmC1D9p
version: a1
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=snd_hda_intel latency=0
resources: irq:85 memory:c3000000-c3003fff
*-input:0
product: HDA NVidia HDMI/DP,pcm=3
physical id: 0
logical name: input11
logical name: /dev/input/event8
*-input:1
product: HDA NVidia HDMI/DP,pcm=7
physical id: 1
logical name: input12
logical name: /dev/input/event9
*-input:2
product: HDA NVidia HDMI/DP,pcm=8
physical id: 2
logical name: input13
logical name: /dev/input/event10
*-input:3
product: HDA NVidia HDMI/DP,pcm=9
physical id: 3
logical name: input14
logical name: /dev/input/event11
*-input:4
product: HDA NVidia HDMI/DP,pcm=10
physical id: 4
logical name: input15
logical name: /dev/input/event12
*-input:5
product: HDA NVidia HDMI/DP,pcm=11
physical id: 5
logical name: input16
logical name: /dev/input/event13
*-input:6
product: HDA NVidia HDMI/DP,pcm=12
physical id: 6
logical name: input17
logical name: /dev/input/event14