I get the sound of the Realtex ALC889 on my motherboard in Windows 10, and I used to get it with Ubuntu 17.10. But when I upgraded to 18.04, Ubuntu no longer recognizes the device. Below the sound configuration I get:
HDMI / DisplayPort2 – HDMI GT216 audio driver
Digital output (S / PDIF) – Built-in audio
The HDMI controls the sound on my 24 "TV, but the TV has a terrible sound, I want an analog stereo output to handle my separate speakers.
~ $ lspci | grep -i audio 00: 1b.0 Audio device: HD Audio Driver Intel Corporation 82801JI (family ICH10) 02: 00.1 Audio device: NVIDIA Corporation GT216 HDMI audio driver (rev a1)