Comment # 6 on bug 1195860 from Takashi Iwai

Thanks.

Through a quick glance, this looks like the machine that isn't supported yet. 
Unless there is any BIOS setup that enables the audio, the onboard audio
doesn't seem present on HD-audio bus; the only available HD-audio codec is for
HDMI/DP (from AMD graphics), as you already see in the log.

The alsa-info.sh shows the ACPI entry "ESSX8336" and this is likely
corresponding the audio codec that is connected over I2C bus.  So there must be
the controller device, and this is missing, so far.  My wild guess is that it's
controlled by AMD ACP, but there is no corresponding ACPI entry for that,
unfortunately.

So, currently there is no enough information to enable the audio.
At best, try to contact Huawei for plumbing the stuff, e.g. whether it's driven
via AMD ACP via what ACPI HID, etc.