HDMI monitor with integrated speakers

Official Hardware UNO Family UNO Q
1

Hi, I'm quite new in this "world". I try to manage different audio devices. I've got working headphone set and camera with integrated microphone connected to usb dongle, but can not get sound from monitor speakers connected to hdmi port. I will appreciate your suggestion how to fix this issue.

2

I notice the same issue too, seem like there’s no audio comming out from the HDMI port. Is it under construction or just no?

3

I heard audio from 3.5mm jack of my dongle, and from USB speaker.

With Bluetooth, you already have to fight, but it is also doable, I did it.

HDMI audio probably strict no

4

Hi, support arduino recognize this problem, they explain that there is a debian issu, they are working on it and as soon as they will solve it they will share it with me

5

Here is the response from Arduino support:

Lorenzo Rodriguez (Arduino)

Dec 22, 2025, 11:25 GMT+1

Hi Marek,

Thank you for your response.

We understand the issue that you are describing, and as I previously stated, I do not believe that your issue comes from the hardware configuration of the UNO Q, but the Linux Operating system settings. You can find different solutions online, and try them at your own risk, as we do not have an official guide for your corresponding setup.

Nevertheless, I also managed re-create the setup you described, and experienced the same result when connecting an external speaker to the monitor (via HDMI). The volume of the speakers were very low, compared to connecting the speakers through Bluetooth. However, with my team, we managed to find a solution, through the settings of Linux.

At the moment, we are looking at how we can document the solution and share it with the public. If you would like, I can let you know as soon as we have the steps to solve this issue ready.

Hope this helps and let me know if you have any other questions.

I wish you a nice day!

Thanks and best regards,

Lore
Arduino CX Team

6

You are the best!, thank you!

Hope you can share the documentation with us i they shared

7

:grinning_face_with_smiling_eyes:, by the way did you got something more concernign bottom pins, would be nice to have a shield with standard camera and monitor connectors as on RP (and more??)

8

I ran into the same issue with my new 4gb Uno Q. Have you published a solution some place?

9

Hi, see below last status:

10

Thankfully this can be fixed without Pulseaudio.

/home/arduino/.config/wireplumber/wireplumber.conf.d/51-fix-audio.conf

monitor.alsa.rules = [
  {
    matches = [
      {
        # Matches all sources
        node.name = "~alsa_input.*"
      },
      { 
        # Matches all sinks
        node.name = "~alsa_output.*"
      }
    ]
    actions = {
      update-props = {
        audio.format           = "S16LE"
        audio.rate             = 48000
        api.alsa.period-size   = 4096
        api.alsa.period-num    = 6
        api.alsa.headroom      = 512,
        api.alsa.soft-mixer    = true,
        api.alsa.use-acp       = true,
       # session.suspend-timeout-seconds = 0
       # dither.method = "wannamaker3", # add dither of desired shape
       # dither.noise = 2, # add additional bits of noise
     }
    } 
  }
]

Restart or reload wireplumber for it to take effect systemctl --user restart wireplumber

11

Hi, thanks a lot, finally first today I come back to my issue. The configuration file location in my system is a bit different, but with your settings audio is running perfectly.

Thanks a lot again for great support

12

I also ran into same issue with my new 4gb Uno Q:

BUILD_ID=20260528-558
VARIANT_ID=xfce

arduino@uno-q2:~ $ lsusb -t
/:  Bus 001.Port 001: Dev 001, Class=root_hub, Driver=xhci-hcd/1p, 480M
    |__ Port 001: Dev 002, If 0, Class=Hub, Driver=hub/4p, 480M
        |__ Port 003: Dev 003, If 0, Class=Hub, Driver=hub/4p, 480M
            |__ Port 002: Dev 004, If 0, Class=Human Interface Device, Driver=usbhid, 12M
            |__ Port 002: Dev 004, If 1, Class=Human Interface Device, Driver=usbhid, 12M
            |__ Port 004: Dev 005, If 0, Class=Human Interface Device, Driver=usbhid, 12M
/:  Bus 002.Port 001: Dev 001, Class=root_hub, Driver=xhci-hcd/1p, 5000M
    |__ Port 001: Dev 002, If 0, Class=Hub, Driver=hub/4p, 5000M
arduino@uno-q2:~ $ lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 05e3:0610 Genesys Logic, Inc. Hub
Bus 001 Device 003: ID 05e3:0605 Genesys Logic, Inc. Hub
Bus 001 Device 004: ID 276d:1556 HS6209 MWK601
Bus 001 Device 005: ID 2717:5013 Xiaomi Inc. Mi Wireless Mouse
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 002: ID 05e3:0625 Genesys Logic, Inc. USB3.2 Hub

The monitor is LG BK550Y model with integrated speaker which works well with Windows 11 PC and same HDMI cable.

If UNO Q is connected through UGREEN RevDock USB HUB to this monitor, Video works well but Audio not works. If USB headset is plugged into USB HUB, then it works.

13

Hi, you have solution in post 10 with comment in 11

14

Dear @marek54, I've already applied post 10, but I didn't succeed.

15

Hi Msyang, than no idea what could be the solution :confused:

pert 16

@msyang has now opened a dedicated topic for support of their problem with audio on the integrated speakers:

Please use that topic for any further discussion specific to @msyang's problem.

This topic can continue to be used for any discussion not specific to @msyang's problem.