I recently updated firmware on my Thinkpad Carbon X1 (last gen, 7th I guess) and since (I'm not sure it is the cause of my problem, but it happens simultaneously), I only have a "dummy device" in sound configuration panel on Ubuntu 18.04. I tried a lot of stuff suggested around the web and still, the result of aplay -l is always no sound card detected. The output of lspci -nnk | grep -A2 Audio is :

Audio device [0403]: Intel Corporation Device [8086:9dc8] (rev 11)
    Subsystem: Lenovo Device [17aa:2292]
    Kernel driver in use: snd_soc_skl

Any suggestion how to fix this ?

  • Kernel is? uname -a please.
    – nobody
    Mar 18, 2020 at 13:56

2 Answers 2


Edit /etc/default/grub as root and add the next kernel parameter:


Save and then execute in terminal:

sudo update-grub

And restart...

The latest kernel update (5.3.0-42), while trying to fix things end up breaking them... This should fix it up again....

Ubuntu 18.04 audio disappeared after update


Thanks to all of you that answered and commented my question. While waiting for an answer here, I found someone on the web with the same problem that was advised to go and look here : https://bugs.launchpad.net/ubuntu/+source/linux-oem-osp1/+bug/1864061/comments/3. The two steps proposed there solved the issue :

  • add options snd-hda-intel dmic_detect=0 in the configuration file /etc/modprobe.d/alsa-base.conf
  • add blacklist snd_soc_skl in the config file /etc/modprobe.d/blacklist.conf

As this fixed my issue, I do not know if other solutions work as well, but I'm sure they do :). Thanks again!

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