No sound on Asus G752V using Linux Mint.

Hi there

I hope someone can help me. I can get no sound output from my new laptop. It's a dual boot machine and the sounds works find under Windows 10. I have tried reinstalling alsa-base and pulseaudio and tinkering with the /etc/modprobe.d/alsa-base.conf file. Alsamixer only shows 3 S/PDIF outputs and F6 only shows "HDA NVidia". Some output inclues:

$ cat /proc/asound/cards
0 [NVidia ]: HDA-Intel - HDA NVidia
HDA NVidia at 0xdc080000 irq 17

$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 7: HDMI 1 [HDMI 1]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 8: HDMI 2 [HDMI 2]
Subdevices: 1/1
Subdevice #0: subdevice #0

$ lsmod | grep snd
snd_seq_midi 16384 0
snd_seq_midi_event 16384 1 snd_seq_midi
snd_seq 65536 2 snd_seq_midi_event,snd_seq_midi
snd_rawmidi 32768 1 snd_seq_midi
snd_seq_device 16384 3 snd_seq,snd_rawmidi,snd_seq_midi
snd_hda_codec_hdmi 53248 1
snd_hda_intel 36864 3 snd_hda_codec_hdmi
snd_hda_controller 32768 1 snd_hda_intel
snd_hda_codec 143360 3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_controlle r
snd_hwdep 20480 1 snd_hda_codec
snd_pcm 106496 4 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd _hda_controller
snd_timer 32768 2 snd_pcm,snd_seq
snd 86016 13 snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd _seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,snd_s eq_device
soundcore 16384 2 snd,snd_hda_codec

$ lspci | grep Audio
00:1f.3 Audio device: Intel Corporation Sunrise Point-H HD Audio (rev 31)
01:00.1 Audio device: NVIDIA Corporation GM204 High Definition Audio Controller (rev a1)

Any help will be much appreciated.
Thank you kindly.