Никакой звук внезапно 16.04

Звуковая карта не обнаруживается.

$ lspci -v | grep -A7 -i "audio"
00:1f.3 Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21)
        Subsystem: Hewlett-Packard Company Sunrise Point-LP HD Audio
        Flags: bus master, fast devsel, latency 32, IRQ 16
        Memory at 94328000 (64-bit, non-prefetchable) [size=16K]
        Memory at 94310000 (64-bit, non-prefetchable) [size=64K]
        Capabilities: <access denied>
        Kernel driver in use: snd_hda_intel
        Kernel modules: snd_hda_intel, snd_soc_skl

$ sudo modprobe snd-hda-intel
$ aplay -l
aplay: device_list:268: no soundcards found...
$cat /proc/asound/cards
--- no soundcards ---

Мое ядро:

$ uname -r
4.4.0-57-generic

Переустановленный alsa-utils и alsa-base. Тем не менее я добираюсь:

$ alsamixer
cannot open mixer: No such file or directory