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Recently, I installed Ubuntu 24.04.2 LTS on my HP ProDesk 600 G5 Desktop Mini, and everything seemed to work fine — except one thing: no sound via DisplayPort.

If you’re facing the same issue, especially on systems using Intel audio chips like Kabylake HDMI, here’s the exact method I used to fix it.

🔧 Step-by-Step Solution

1. Install ALSA Tools GUI

Open your terminal and run the following command to install the ALSA GUI tools:

sudo apt-get install alsa-tools-gui

2. Launch hdajackretask

After installation, search for hdajackretask in your Ubuntu applications and open it.

3. Select the Right Codec

In the top-right corner, select your codec. In my case, it was:

Intel Kabylake HDMI

4. Show Unconnected Pins

Check the box:

✅ Show unconnected pins

5. Override Not Connected Pins

Under the Pin Configuration section:

• For each pin marked as “Not connected”, click the dropdown.
• Choose: Override → HDMI / DisplayPort

6. Apply the Changes

Click the button: Apply Now

If everything works, you should now get audio through DisplayPort 🎉

⚠️ If You Get a “Device Busy” Error

If you see an error message like:

“Device is busy”

Click: Install boot override, then reboot your system.

✅ Final Thoughts

Ubuntu works great on HP ProDesk 600 G5, but small tweaks like this might be needed to get everything functioning perfectly. Hopefully, this guide helped you get your sound working over DisplayPort.

If you have any questions or use a different codec, feel free to leave a comment.

Happy hacking! 🐧