The following two patches will resolve this issue:
https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/?h=for-next&id=e1e62b98ebddc3234f3259019d3236f66fc667f8
https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/?h=for-next&id=f3b703326541d0c1ce85f5e570f6d2b6bd4296ec
** Package changed: alsa-driver (Ubuntu) => linux (Ubuntu)
** Changed in: dell-sputnik
Status: New => Fix Committed
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https://bugs.launchpad.net/bugs/1423413
Title:
[XPS 13 9343, Realtek ALC3263, Mic, Internal] No sound at all
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