Rafael, This bug is closed so the most helpful thing to do would be to open a new bug. Just run:
ubuntu-bug gnome-shell -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1825679 Title: Delay/freeze/cpu spike when using the function/media/brightness keys in Xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1825679/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
