no soundcards found

[jlubinda]

have a Pi4 B running Ubuntu 18.04 bionic beaver. No matter what i do, it just doesn't seem to find any sound device. I have tried connecting a TV to it (via HDMI). It play video just fine, but no sound. Headphones don't work either.

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[ -f /boot/config.txt ] && echo "$FILE exist" || echo "$FILE does not exist"
does not exist

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sudo aplay -l
aplay: device_list:270: no soundcards found...

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ls /cat/asound*
ls: cannot access '/cat/asound*': No such file or directory

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[code]
pacmd
Welcome to PulseAudio 11.1! Use "help" for usage information.
>>> list-sinks
1 sink(s) available.
* index: 0
name: <auto_null>
driver: <module-null-sink.c>
flags: DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
state: SUSPENDED
suspend cause: IDLE
priority: 1000
volume: front-left: 65536 / 100% / 0.00 dB, front-right: 65536 / 100% / 0.00 dB
balance 0.00
base volume: 65536 / 100% / 0.00 dB
volume steps: 65537
muted: no
current latency: 0.00 ms
max request: 344 KiB
max rewind: 344 KiB
monitor source: 0
sample spec: s16le 2ch 44100Hz
channel map: front-left,front-right
Stereo
used by: 0
linked by: 0
configured latency: 0.00 ms; range is 0.50 .. 2000.00 ms
module: 11
properties:
device.description = "Dummy Output"
device.class = "abstract"
device.icon_name = "audio-card"
>>>

Please help me out. I have no clue what to do next.