no sound with HP Chromebook x360 12b-ca0300ng

[Sylvio82]

Hi, I installed Ubuntu on internal harddrive on this chromebook, but I cant get the sound to work.

sudo alsa-info
ALSA Information Script v 0.5.1

This script visits the following commands/files to collect diagnostic
information about your ALSA installation and sound related hardware.

dmesg
lspci
aplay
amixer
alsactl
rpm, dpkg
/proc/asound/
/sys/class/sound/
~/.asoundrc (etc.)

See '/usr/sbin/alsa-info --help' for command line options.

/usr/sbin/alsa-info: line 466: /proc/asound/modules: No such file or directory
cat: /tmp/alsa-info.B5s4iACIuy/alsamodules.tmp: No such file or directory
cat: /proc/asound/modules: No such file or directory
/usr/sbin/alsa-info: line 661: tree: command not found
Automatically upload ALSA information to www.alsa-project.org? [y/N] : y
Uploading information to www.alsa-project.org ... Done!

Your ALSA information is located at http://alsa-project.org/db/?f=c4cbb45bb0081d1eb220ea500f0df55d435e72f5
Please inform the person helping you.