Thanks for the bug report. Please try updating to the latest kernel version 5.11 and tell us if it still has the same problem:
sudo apt update sudo apt install linux-generic-hwe-20.04 sudo apt full-upgrade and reboot. ** Summary changed: - Display Brightness not working + [HP Spectre x360 Convertible 15-eb0xxx] Display Brightness not working ** Package changed: xorg (Ubuntu) => linux-hwe-5.8 (Ubuntu) -- 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/1940850 Title: [HP Spectre x360 Convertible 15-eb0xxx] Display Brightness not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-5.8/+bug/1940850/+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
