Thinkpad E590 USB-C dock Audio almost working

Hi! I'm new here, I just started installing catalina on my Thinkpad 2 days ago, as I want to develop some apps for Mac and the VM I was using was way too slow.

The Thinkpad in question has an intel i5 8250u, with 16GB of DDR4, Intel UHD 620 graphics.

The thing is, almost everything is working, touchpad, tracepoint, keyboard, bluetooth and even wifi with an intel card works (I read that apple uses Broadcom wifi cards and that intel cards are not supported).

However, the thing that is not working is having audio from the dock.
The dock is the first gen Thinkpad usb-c dock.

The funny thing is that it does appear as "Thinkpad USB-C Dock Audio" on system settings, but it only shows the minijack connection, with is the only one that works. well, kinda.

Even if the OS says that there isn't any audio device, and that the volume up/down keys shows a forbidden sign (as if there was no audio), I can hear it. Also mic works.
What does not work is the audio output from the DisplayPort.

If anyone knows what I am doing wrong, please tell me.

Thank you.

Should I provide my EFI folder?

submitted by /u/ALXANDR_00
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