Closing as I don't have access to this laptop, the Ubuntu release is EOL and support for the hardware is probably EOL as well.
** Changed in: gnome-settings-daemon (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1032994 Title: Unable to increase or decrease brightness with Fn key on Samsung RV510 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1032994/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs