Public bug reported: There is a long time bug when the user press any function key or media key om Gnome, the CPU spikes to 100%, the system freezes for some seconds and then the key is pressed. This is particularly true when change the screen brightness. This only happens in Xorg, Wayland is not affected.
On Brazilian keyboard a workaround is to edit the file `/usr/share/X11/xkb/symbols/br` and comment the line `modifier_map Mod3 { Scroll_Lock };` This has been affecting multiple users and has been discussed on https://www.reddit.com/r/gnome/comments/84453o/delayfreezecpu_spike_when_using_the_functionmedia/ https://askubuntu.com/questions/1025302/media-keys-delayed-and-cause-a -cpu-spike-to-100-on-ubuntu-17-10-with-gnome https://askubuntu.com/questions/906723/fn-media-keys-slow-delayed-on- ubuntu-gnome-17-04?noredirect=1&lq=1 ** Affects: xkeyboard-config (Ubuntu) Importance: Undecided Status: New -- 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/xkeyboard-config/+bug/1825679/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs