Comment 10 for bug 1895486

Just for better bug tracking, I've added some links.

Launchpad related bugs (maybe duplicated):
- https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/2013255
- https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1892747
- https://bugs.launchpad.net/gnome-shell/+bug/1895486

This bug appears on AskUbuntu:
- https://askubuntu.com/questions/1242205/ubuntu-20-04-hangs-when-changing-brightness-level-with-keyboard
- https://askubuntu.com/questions/1278008/huge-lag-and-screen-freezes-changing-the-brightness-on-ubuntu-20-04-using-the-ho
- https://askubuntu.com/questions/1065302/volume-and-brighness-adjustment-osd-delay-and-screen-freeze-on-ubuntu-18-04
- https://askubuntu.com/questions/1041335/ubuntu-18-04-input-slow-when-portuguese-brazil-layout-among-keyboard-input-sou
- https://askubuntu.com/questions/1130163/laggy-brightness-control-on-dell-inspirion-using-function-keys-ubuntu-18-04
- 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

Upstream issues:
- https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/1821
- https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/1279