Set screen blanking after 40 minutes

My screen goes blank every 10 minutes (after idle time, not touching keyboard and touchpad). I'd like to increase this time (40 minutes). I tried to add this line to my .profile xset s 2400 The second thing I tried is this command gsettings set org.gnome.desktop.session idle-delay 2400 but unsuccessful I'm on Ubuntu Ubuntu 22.04.4 LTS with i3 Here is the output of xset q Keyboard Control: auto repeat: on key click percent: 0 LED mask: 00000000 XKB indicators: 00: Caps Lock: off 01: Num Lock: off 02: Scroll Lock: off 03: Compose: off 04: Kana: off 05: Sleep: off 06: Suspend: off 07: Mute: off 08: Misc: off 09: Mail: off 10: Charging: off 11: Shift Lock: off 12: Group 2: off 13: Mouse Keys: off auto repeat delay: 660 repeat rate: 25 auto repeating keys: 00fdffffdf7ffbbf fedfffafffedffff 9fffffffffffffff fff7ffffffffffff bell percent: 50 bell pitch: 400 bell duration: 100 Pointer Control: acceleration: 2/1 threshold: 4 Screen Saver: prefer blanking: yes allow exposures: yes timeout: 2400 cycle: 600 Colors: default colormap: 0x20 BlackPixel: 0x0 WhitePixel: 0xffffff Font Path: /usr/share/fonts/X11/misc,/usr/share/fonts/X11/Type1,built-ins DPMS (Energy Star): Standby: 600 Suspend: 600 Off: 600 DPMS is Enabled Monitor is On