External monitor is not turning back on after screen off energy saving GNOME X11

Hi guys,

I am using Manjaro GNOME on my Laptop and an external monitor connected, however I do not use Laptop display and the lid is closed all the time.

My configuration is to go on “Screen Blank” after 15 minutes of inactivity. Now my Samsung monitor goes to power saving mode when screen goes blank. The only way to get back is to turn off my Monitor and turn back on.

Here my inxi -mFxxxzzz
❯ inxi -mFxxxzzz

System:
  Kernel: 6.5.3-1-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 13.2.1
    clocksource: tsc Desktop: GNOME v: 44.5 tk: GTK v: 3.24.38 wm: gnome-shell
    dm: GDM v: 44.1 Distro: Manjaro Linux base: Arch Linux
Machine:
  Type: Laptop System: Dell product: Latitude 7280 v: N/A
    serial: <superuser required> Chassis: type: 10 serial: <superuser required>
  Mobo: Dell model: 0KK5D1 v: A00 serial: <superuser required> UEFI: Dell
    v: 1.13.0 date: 11/12/2018
Battery:
  ID-1: BAT0 charge: 49.4 Wh (100.0%) condition: 49.4/60.0 Wh (82.4%)
    volts: 8.4 min: 7.6 model: LGC-LGC7.780 DELL MYJ9678 type: Li-ion
    serial: <filter> status: full
Memory:
  System RAM: total: 16 GiB available: 15.51 GiB used: 10.74 GiB (69.2%)
  RAM Report: permissions: Unable to run dmidecode. Root privileges
    required.
CPU:
  Info: dual core model: Intel Core i5-6300U bits: 64 type: MT MCP
    smt: enabled arch: Skylake rev: 3 cache: L1: 128 KiB L2: 512 KiB L3: 3 MiB
  Speed (MHz): avg: 2800 min/max: 400/3000 cores: 1: 2800 2: 2800 3: 2800
    4: 2800 bogomips: 20004
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
Graphics:
  Device-1: Intel Skylake GT2 [HD Graphics 520] vendor: Dell driver: i915
    v: kernel arch: Gen-9 ports: active: HDMI-A-1 off: eDP-1
    empty: DP-1,HDMI-A-2 bus-ID: 00:02.0 chip-ID: 8086:1916 class-ID: 0300
  Device-2: Microdia Integrated_Webcam_HD driver: uvcvideo type: USB
    rev: 2.0 speed: 480 Mb/s lanes: 1 bus-ID: 1-5:3 chip-ID: 0c45:6717
    class-ID: 0e02
  Display: x11 server: X.org v: 1.21.1.8 with: Xwayland v: 23.2.0
    compositor: gnome-shell driver: X: loaded: modesetting alternate: fbdev,vesa
    dri: iris gpu: i915 display-ID: :1 screens: 1
  Screen-1: 0 s-res: 2560x1440 s-size: <missing: xdpyinfo>
  Monitor-1: HDMI-A-1 mapped: HDMI-1 pos: primary model: Samsung LU28R55
    serial: <filter> res: 2560x1440 hz: 60 dpi: 103
    size: 632x360mm (24.88x14.17") diag: 727mm (28.6") modes: max: 3840x2160
    min: 720x400
  Monitor-2: eDP-1 note: disabled model: AU Optronics 0x106c res: 2560x1440
    dpi: 126 size: 276x155mm (10.87x6.1") diag: 317mm (12.5") modes: 1366x768
  API: EGL v: 1.5 hw: drv: intel iris platforms: device: 0 drv: iris
    device: 1 drv: swrast surfaceless: drv: iris x11: drv: iris
    inactive: gbm,wayland
  API: OpenGL v: 4.6 compat-v: 4.5 vendor: intel mesa v: 23.1.7-1 glx-v: 1.4
    direct-render: yes renderer: Mesa Intel HD Graphics 520 (SKL GT2)
    device-ID: 8086:1916
Audio:
  Device-1: Intel Sunrise Point-LP HD Audio vendor: Dell driver: snd_hda_intel
    v: kernel bus-ID: 00:1f.3 chip-ID: 8086:9d70 class-ID: 0403
  API: ALSA v: k6.5.3-1-MANJARO status: kernel-api with: aoss
    type: oss-emulator
  Server-1: sndiod v: N/A status: off
  Server-2: JACK v: 1.9.22 status: off
  Server-3: PipeWire v: 0.3.80 status: off
  Server-4: PulseAudio v: 16.1 status: active with: pulseaudio-alsa
    type: plugin
Network:
  Device-1: Intel Ethernet I219-LM vendor: Dell driver: e1000e v: kernel
    port: N/A bus-ID: 00:1f.6 chip-ID: 8086:15d7 class-ID: 0200
  IF: enp0s31f6 state: down mac: <filter>
  Device-2: Intel Wireless 8265 / 8275 driver: iwlwifi v: kernel pcie:
    speed: 2.5 GT/s lanes: 1 bus-ID: 02:00.0 chip-ID: 8086:24fd class-ID: 0280
  IF: wlp2s0 state: up mac: <filter>
  IF-ID-1: br-04f8c7439594 state: up speed: 10000 Mbps duplex: unknown
    mac: <filter>
  IF-ID-2: br-33a3ed974360 state: down mac: <filter>
  IF-ID-3: br-cfeaac499d75 state: down mac: <filter>
  IF-ID-4: docker0 state: down mac: <filter>
  IF-ID-5: veth5e26ccb state: up speed: 10000 Mbps duplex: full
    mac: <filter>
  IF-ID-6: vetha138752 state: up speed: 10000 Mbps duplex: full
    mac: <filter>
Bluetooth:
  Device-1: Intel Bluetooth wireless interface driver: btusb v: 0.8 type: USB
    rev: 2.0 speed: 12 Mb/s lanes: 1 bus-ID: 1-7:4 chip-ID: 8087:0a2b
    class-ID: e001
  Report: rfkill ID: hci0 rfk-id: 8 state: up address: see --recommends
Drives:
  Local Storage: total: 476.94 GiB used: 93.83 GiB (19.7%)
  ID-1: /dev/nvme0n1 vendor: Fanxiang model: S500PRO 512GB size: 476.94 GiB
    speed: 31.6 Gb/s lanes: 4 tech: SSD serial: <filter> fw-rev: SN09273
    temp: 38.9 C scheme: GPT
Partition:
  ID-1: / size: 459.43 GiB used: 93.62 GiB (20.4%) fs: ext4
    dev: /dev/nvme0n1p2
  ID-2: /boot/efi size: 299.4 MiB used: 312 KiB (0.1%) fs: vfat
    dev: /dev/nvme0n1p1
Swap:
  ID-1: swap-1 type: partition size: 8.8 GiB used: 214.3 MiB (2.4%)
    priority: -2 dev: /dev/nvme0n1p3
Sensors:
  System Temperatures: cpu: 42.0 C pch: 41.0 C mobo: 37.0 C sodimm: SODIMM C
  Fan Speeds (rpm): cpu: 0
Info:
  Processes: 344 Uptime: 6d 3h 8m wakeups: 660 Init: systemd v: 254
  default: graphical Compilers: gcc: 13.2.1 clang: 16.0.6 Packages: 1789
  pm: pacman pkgs: 1780 pm: flatpak pkgs: 9 Shell: Zsh v: 5.9
  running-in: gnome-terminal inxi: 3.3.30

Any idea about this?