gsettings set org.gnome.desktop.wm.preferences focus-new-windows 'strict'
или
dconf-editor здесь: org/gnome/desktop/wm/preferences
Отключить переключатель в Gnome-tweaks
В dconf в ветке org.gnome.desktop.wm.keybindings switch-input-source установить значение ['<Alt>Shift_L']
Текущие значения
sudo -u Debian-gdm dbus-run-session gsettings list-recursively org.gnome.settings-daemon.plugins.power | grep -E "sleep-inactive"
sudo -u Debian-gdm dbus-run-session dconf write /org/gnome/settings-daemon/plugins/power/sleep-inactive-ac-type "'nothing'" sudo -u myuser dbus-run-session dconf write /org/gnome/settings-daemon/plugins/power/sleep-inactive-ac-type "'nothing'"