I assume you are asking me if I upgraded BIOS and answer is no.
BIOS from Dmesg
DMI: Insignia NS-P11W7100/Cherry Trail CR, BIOS BI-11.6-S116CJR100-CC34A-029-S
05/19/2017
Purchase History after BIOS date
In Store Order Number xxxx xxx xxxxx xxxxx
Aug 29, 2017 $179.99
Insignia™ - 11.6" - Tablet - 32GB - With Keyboard - Black
Initial Ubuntu 18.04 install works.
Feb 9 2019 /boot/vmlinuz-4.18.0-15-generic
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https://bugs.launchpad.net/bugs/1841065
Title:
Updated to 5.0.0-25 and headphone still inverted
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