No HDMI signal from device, external monitor not detected

I’ve just recently installed EndeavourOS for the first time. At first when I plugged my 2nd monitor into it it worked fine, but after rebooting once it won’t connect and isn’t detected on either end. I’m on a Thinkpad with a 3070 ‘GA104M’, I have nvidia-open, nvidia-utils, lib32-nvidia-utils, and optimus-manager. Optimus’ state is nvidia.

System:
  Kernel: 6.13.7-arch1-1 arch: x86_64 bits: 64
  Desktop: KDE Plasma v: 6.3.3 Distro: EndeavourOS
Machine:
  Type: Laptop System: LENOVO product: 20Y50011US v: ThinkPad X1 Extreme Gen
    4i serial: <superuser required>
  Mobo: LENOVO model: 20Y50011US v: SDK0J40697 WIN
    serial: <superuser required> UEFI: LENOVO v: N40ET47W (1.29 )
    date: 07/31/2024
Battery:
  ID-1: BAT0 charge: 72.3 Wh (97.6%) condition: 74.1/90.1 Wh (82.3%)
CPU:
  Info: 8-core model: 11th Gen Intel Core i7-11850H bits: 64 type: MT MCP
    cache: L2: 10 MiB
  Speed (MHz): avg: 935 min/max: 800/4800 cores: 1: 935 2: 935 3: 935 4: 935
    5: 935 6: 935 7: 935 8: 935 9: 935 10: 935 11: 935 12: 935 13: 935 14: 935
    15: 935 16: 935
Graphics:
  Device-1: Intel TigerLake-H GT1 [UHD Graphics] driver: i915 v: kernel
  Device-2: NVIDIA GA104M [GeForce RTX 3070 Mobile / Max-Q] driver: nvidia
    v: 570.124.04
  Device-3: USB C Video Adaptor driver: N/A type: USB
  Device-4: Luxvisions Innotech Integrated RGB Camera driver: uvcvideo
    type: USB
  Display: wayland server: X.org v: 1.21.1.16 with: Xwayland v: 24.1.6
    compositor: kwin_wayland driver: X: loaded: modesetting,nvidia gpu: i915
    resolution: 3840x2400~60Hz
  API: EGL v: 1.5 drivers: iris,nvidia
    platforms: gbm,wayland,x11,surfaceless,device
  API: OpenGL v: 4.6.0 compat-v: 4.6 vendor: nvidia v: 570.124.04
    renderer: NVIDIA GeForce RTX 3070 Laptop GPU/PCIe/SSE2
  API: Vulkan v: 1.4.304 drivers: N/A surfaces: xcb,xlib,wayland
  Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo
    de: kscreen-console,kscreen-doctor gpu: nvidia-smi wl: wayland-info
    x11: xdpyinfo, xprop, xrandr
Audio:
  Device-1: Intel Tiger Lake-H HD Audio driver: sof-audio-pci-intel-tgl
  Device-2: NVIDIA GA104 High Definition Audio driver: snd_hda_intel
  Device-3: Samson GoMic compact condenser mic
    driver: hid-generic,snd-usb-audio,usbhid type: USB
  API: ALSA v: k6.13.7-arch1-1 status: kernel-api
  Server-1: PipeWire v: 1.4.1 status: active
Network:
  Device-1: Intel Wi-Fi 6E AX210/AX1675 2x2 [Typhoon Peak] driver: iwlwifi
  IF: wlan0 state: up mac: f4:a4:75:08:3b:0d
Bluetooth:
  Device-1: Intel AX210 Bluetooth driver: btusb type: USB
  Report: btmgmt ID: hci0 rfk-id: 1 state: down bt-service: enabled,stopped
    rfk-block: hardware: no software: no address: N/A
Drives:
  Local Storage: total: 2.29 TiB used: 15.47 GiB (0.7%)
  ID-1: /dev/nvme0n1 vendor: Samsung model: MZVL2512HCJQ-00BL7
    size: 476.94 GiB
  ID-2: /dev/sda vendor: Seagate model: Portable size: 1.82 TiB type: USB
Partition:
  ID-1: / size: 467.4 GiB used: 15.38 GiB (3.3%) fs: ext4 dev: /dev/nvme0n1p2
Swap:
  Alert: No swap data was found.
Sensors:
  Src: /sys System Temperatures: cpu: 56.0 C mobo: N/A
  Fan Speeds (rpm): fan-1: 2475 fan-2: 2186
Info:
  Memory: total: 16 GiB note: est. available: 15.32 GiB used: 8.62 GiB (56.2%)
  Processes: 348 Uptime: 43m Shell: Bash inxi: 3.3.37

Welcome to the community @zoobnash :wave::smiling_face_with_sunglasses: :enos_flag:

Have you tried with the proprietary nvidia driver? I’ve encountered difficulty with the external display when using the open-source driver on a laptop. Just something to try.

It is curious it was working. Importantly, can you recall what might have changed?

Hi Bink,
I’ve actually managed to resolve it- seems like it was a combination of incorrect drivers and a monitor misconfiguration.

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