[Solved] No sound with Fedora 27 installed on a Chromebook

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Hi there, wonderful Fedora community.

I recently installed Fedora 27 on my Dell Chromebook 11 (2015 - CANDY), by first flashing a custom bios from MrChromebox.

It worked beautifully and is performing very well in most respects. However, it seems to have not recognized the sound card. When I look in the sound options it lists 'Dummy output' as the device.

The function keys don't work either but that's not a big deal, though if that can be fixed particularly for sound and screen brightness adjustments that would be great.

I'm a bit of a noob and don't really know where to start with troubleshooting these problems or what info to provide. Any help will be much appreciated!

EDIT: Can anyone give me some basic sound troubleshooting tips eg. commands to try with Pulseaudio/ALSA? I've tried some things I found online but they didn't work and/or had no result. I'm wondering if there is anything specifically Fedora I can try given that most of the stuff I find online relates to Ubuntu based distros.

Also wondering if a total reinstall of Fedora 27 is likely to recognize the sound card the second time round or if that's just a waste of time?

EDIT: if it helps aplay -l gives the following:

**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: bytchtnocodec [bytcht-nocodec], device 0: Audio (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: bytchtnocodec [bytcht-nocodec], device 1: Deep-Buffer Audio (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0

Cheers,

Nick