https://github.com/heikomat/linux/tree/cx2072x/cx2072x_fixes_and_manual

Make audio work on cx2072x devices like the Asus E200HA
TL;DR

If You're on Debian or Ubuntu, run this (at your own risk!!)

wget -qO- https://gist.github.com/heikomat/3fe272431b44b580c933bfb901a92257/raw | bash

General sound setup:

Most of the following information are from these sources:

    Kernel Bug #115531
    Repository with the Fixes for an older kernel
    Asus E200HA fix-script-Repo by Grippentech

This manual is for debain and derivates of it, though it can probably be adapted for any linux system. Debian and Ubuntu users can use the script provided above. Its goal is to do the steps described here:

    Get the Kernel with the cx2072x codec driver and the cx2072x machine driver from releases, or build it yourself (see building the kernel)

    This tells the Linux how to talk to the hardware.

    Install the kernel

    sudo dpkg --install LINUX_IMAGE_DEB_PACKAGE.deb
    sudo dpkg --install LINUX_HEADERS_DEB_PACKAGE.deb

    Have pulseaudio installed

    sudo apt install pulseaudio

    Have firmware-intel-sound (for debian) or linux-firmware (for ubuntu) installed.

    This contains the firmware for intels sst audio device (/lib/firmware/intel/fw_sst_22a8.bin). The firmware is the proprietary software that runs within the chip.

    # debian
    sudo apt install firmware-intel-sound

    # ubuntu
    sudo apt install linux-firmware

    Copy the configuration files for alsa (chtcx2072x.conf and HiFi.conf from the chtcx2072x folder) to /usr/share/alsa/ucm/chtcx2072x (creating the folder first).

    These tell alsa what driver and codec to use, and how to use them

    sudo mkdir --parents /usr/share/alsa/ucm/chtcx2072x
    cd /usr/share/alsa/ucm/chtcx2072x
    sudo wget "https://raw.githubusercontent.com/heikomat/linux/cx2072x/cx2072x_fixes_and_manual/chtcx2072x/HiFi.conf"
    sudo wget "https://raw.githubusercontent.com/heikomat/linux/cx2072x/cx2072x_fixes_and_manual/chtcx2072x/chtcx2072x.conf"

    Set realtime-scheduling = no in /etc/pulse/daemon.conf (see this issue-comment).

    This makes the pulseaudio daemon not die if the audio device is not found instantly

    via script

    sudo sed --in-place --regexp-extended --expression='s/;?\s*realtime-scheduling\s*=\s*(yes|no)/realtime-scheduling = no/g' /etc/pulse/daemon.conf

    by hand
        Make sure you edit the file as root, for example with sudo nano /etc/pulse/daemon.conf
        Change ; realtime-scheduling = yes to realtime-scheduling = no
        make sure you removed the ; at the beginning of the line, this is important!

    Reboot

Possible fixes if audio is still not working:

    Remove possibly existing user-pulse-config with rm -rf ~/.config/pulse/*
    Set pulseaudios default device:
        Check wich index your non-hdmi audio device has with pactl list short sinks
        pacmd set-default-sink 1 (replacing the 1 with the audio-device-index)

Getting a detailed pulseaudio log, for when debugging is necessary

    Enable debug-messages for pulseaudio by editing /etc/pulse/daemon.conf
        Make sure you edit the file as root, for example with sudo nano /etc/pulse/daemon.conf
        Change ; log-level = notice to log-level = debug
        make sure you removed the ; at the beginning of the line, this is important!
    Reboot
    Put a log on the Desktop with

    sudo cat /var/log/syslog | grep 'intel\|cx2072x\|pulse\|alsa\|cht\|error' > ~/Desktop/pulselog.txt

    Give use the pulselog.txt you now have on your Desktop

I think this is a duplicate of https://bugzilla.kernel.org/show_bug.cgi?id=115531