Hi. I have a similar issue as described in Linux on Chuwi GemiBook
I just got a new Chuwi Gemibook Pro and installed Linux Ubuntu 20.04 on it, and there is no sound. In “Output device” I see only Dummpy output, and after adding
options snd-hda-intel model=generic
it changed to “HDMI / Display Port - Built-in Audio” but it still doesn’t work.
I tried different kernels (5.10, 5.11, 5.13) - all the same.
Unfortunately I removed Windows before checking the sound so I don’t know is it a hardware problem or not.
Can you help me?