Solved this (and some other issues) for me by installing the mainline kernel
Used the "mainline" script for that
e.g. with instructions from
https://www.linuxuprising.com/2018/10/2-utilities-to-install-latest-kernel-in.html
** Changed in: xorg (Ubuntu)
Status: New => Invalid
--
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1881462
Title:
Brightness settings don't work on Lenovo Ideapad 5 15ARE05
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1881462/+subscriptions
_______________________________________________
Mailing list: https://launchpad.net/~ubuntu-x-swat
Post to : ubuntu-x-swat@lists.launchpad.net
Unsubscribe : https://launchpad.net/~ubuntu-x-swat
More help : https://help.launchpad.net/ListHelp
