Gnome Configurations

Disable wayland

Edit /etc/gdm/custom.conf as follows.

- #WaylandEnable=false
+ WaylandEnable=false
+ DefaultSession=gnome-xorg.desktop

Otherwise run /usr/lib/gdm-disable-wayland as root.

sudo /usr/lib/gdm-disable-wayland

Turn off alert

dconf write /org/gnome/desktop/sound/event-sounds "false"

or

gsettings set org.gnome.desktop.sound event-sounds false