Po-Hsu Lin, as per
http://www.dell.com/support/drivers/us/en/19/Product/inspiron-one-20-2020-aio
an update is available for your BIOS (A06). If you update to this following
https://help.ubuntu.com/community/BiosUpdate , does it change anything? If it
doesn't, could you please both specify what happened, and provide the output of
the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
Thank you for your understanding.
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
** Summary changed:
- [Dell Inspiron One 2020] Unable to adjust screen brightness
+ 8086:0152 [Dell Inspiron One 2020] Unable to adjust screen brightness
** Tags added: needs-upstream-testing
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https://bugs.launchpad.net/bugs/1203982
Title:
8086:0152 [Dell Inspiron One 2020] Unable to adjust screen brightness
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