Comment 130 for bug 1516025

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/sound/pci/hda/patch_realtek.c

look like you need two new models for headset and 5.1

static const struct hda_model_fixup alc662_fixup_models[] = {
 {.id = ALC272_FIXUP_MARIO, .name = "mario"},
 {.id = ALC662_FIXUP_ASUS_MODE1, .name = "asus-mode1"},
 {.id = ALC662_FIXUP_ASUS_MODE2, .name = "asus-mode2"},
 {.id = ALC662_FIXUP_ASUS_MODE3, .name = "asus-mode3"},
 {.id = ALC662_FIXUP_ASUS_MODE4, .name = "asus-mode4"},
 {.id = ALC662_FIXUP_ASUS_MODE5, .name = "asus-mode5"},
 {.id = ALC662_FIXUP_ASUS_MODE6, .name = "asus-mode6"},
 {.id = ALC662_FIXUP_ASUS_MODE7, .name = "asus-mode7"},
 {.id = ALC662_FIXUP_ASUS_MODE8, .name = "asus-mode8"},
        {.id = ALC668_FIXUP_DELL_MIC_NO_PRESENCE, .name = "dell-headset-multi"},
 {.id = ALC668_FIXUP_DELL_ALIENWARE, .name = "dell-alienware"},
 {.id = ALC668_FIXUP_DELL_ALIENWARE_51, .name = "dell-51"},
 {}
};