Unable to activate display (re: dummy hdmi plug + deep sleep[?] TV)

[sofakng]

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I have two devices connected to my GPU:

1. HDMI dummy adapter
2. LG OLED TV

The primary configuration is the dummy adapter is disabled (ie. [Show only on 2] in Windows Display Settings) and the LG TV is active. However, the LG TV goes into deep sleep (?) when turned off so I think Windows doesn't show any active displays (?) which might be the problem.

Regardless, Sunshine is set to activate the HDMI dummy plug but it isn't working. Moonlight reports an error:

Host returned an error: Failed to initialize video capture/encoding. Is there a display connected and turned on? (Error 503)

Here is the full log from Sunshine. Can anybody help me?

[2025-05-26 11:30:06.980]: Info: Apollo version: v0.3.4
[2025-05-26 11:30:06.980]: Info: Package Publisher: SudoMaker
[2025-05-26 11:30:06.980]: Info: Publisher Website: https://www.sudomaker.com
[2025-05-26 11:30:06.980]: Info: Get support: https://github.com/ClassicOldSong/Apollo/issues
[2025-05-26 11:30:06.980]: Info: config: 'dd_configuration_option' = ensure_primary
[2025-05-26 11:30:06.980]: Info: config: 'output_name' = {6d6e7d6b-6f64-533f-8f5f-2bc3672c4060}
[2025-05-26 11:30:06.980]: Info: config: 'server_cmd' = [{"cmd":"bubbles.scr","elevated":false,"name":"Bubbles"}]
[2025-05-26 11:30:06.980]: Info: Provided workaround settings for SettingsManager:
{
  "hdr_blank_delay": null
}
[2025-05-26 11:30:06.982]: Info: Currently available display devices:
[
  {
    "device_id": "{6d6e7d6b-6f64-533f-8f5f-2bc3672c4060}",
    "display_name": "",
    "edid": {
      "manufacturer_id": "XMD",
      "product_code": "009A",
      "serial_number": 0
    },
    "friendly_name": "",
    "info": null
  },
  {
    "device_id": "{a9852c26-b220-5dcc-973c-624a6789f50b}",
    "display_name": "\\\\.\\DISPLAY1",
    "edid": {
      "manufacturer_id": "GSM",
      "product_code": "C0C8",
      "serial_number": 16843009
    },
    "friendly_name": "",
    "info": {
      "hdr_state": "Enabled",
      "origin_point": {
        "x": 0,
        "y": 0
      },
      "primary": true,
      "refresh_rate": {
        "type": "rational",
        "value": {
          "denominator": 1,
          "numerator": 60
        }
      },
      "resolution": {
        "height": 2160,
        "width": 3840
      },
      "resolution_scale": {
        "type": "rational",
        "value": {
          "denominator": 100,
          "numerator": 250
        }
      }
    }
  }
]
[2025-05-26 11:30:07.100]: Info: nvprefs: No need to modify application profile settings
[2025-05-26 11:30:07.100]: Info: nvprefs: Changed OGL_CPL_PREFER_DXPRESENT to OGL_CPL_PREFER_DXPRESENT_PREFER_ENABLED for base profile
[2025-05-26 11:30:07.153]: Info: System tray created
[2025-05-26 11:30:08.459]: Info: Compiling shaders...
[2025-05-26 11:30:08.641]: Info: Compiled shaders
[2025-05-26 11:30:08.647]: Info: // Testing for available encoders, this may generate errors. You can safely ignore those errors. //
[2025-05-26 11:30:08.648]: Info: Trying encoder [nvenc]
[2025-05-26 11:30:08.877]: Info: 
Device Description : NVIDIA GeForce RTX 4090
Device Vendor ID   : 0x000010DE
Device Device ID   : 0x00002684
Device Video Mem   : 24142 MiB
Device Sys Mem     : 0 MiB
Share Sys Mem      : 16238 MiB
Feature Level      : 0x0000B100
Capture size       : 3840x2160
Offset             : 0x0
Virtual Desktop    : 3840x2160
[2025-05-26 11:30:08.877]: Info: Active GPU has HAGS enabled
[2025-05-26 11:30:08.877]: Info: Using realtime GPU priority
[2025-05-26 11:30:08.877]: Info: 
Colorspace         : DXGI_COLOR_SPACE_RGB_FULL_G2084_NONE_P2020
Bits Per Color     : 10
Red Primary        : [0.639648,0.330078]
Green Primary      : [0.299805,0.599609]
Blue Primary       : [0.150391,0.0595703]
White Point        : [0.3125,0.329102]
Min Luminance      : 0.01 nits
Max Luminance      : 1499 nits
Max Full Luminance : 799 nits
[2025-05-26 11:30:08.877]: Info: Desktop resolution [3840x2160]
[2025-05-26 11:30:08.877]: Info: Desktop format [DXGI_FORMAT_R16G16B16A16_FLOAT]
[2025-05-26 11:30:08.877]: Info: Display refresh rate [60Hz]
[2025-05-26 11:30:08.877]: Info: Requested frame rate [60fps]
[2025-05-26 11:30:08.878]: Info: Client dynamicRange: 0, Display is HDR: true
[2025-05-26 11:30:08.878]: Info: Creating encoder [h264_nvenc]
[2025-05-26 11:30:08.878]: Info: Color coding: SDR (Rec. 601)
[2025-05-26 11:30:08.878]: Info: Color depth: 8-bit
[2025-05-26 11:30:08.878]: Info: Color range: JPEG
[2025-05-26 11:30:08.912]: Info: NvEnc: created encoder H.264 P1 async two-pass rfi
[2025-05-26 11:30:08.932]: Info: Client dynamicRange: 0, Display is HDR: true
[2025-05-26 11:30:08.932]: Info: Creating encoder [hevc_nvenc]
[2025-05-26 11:30:08.932]: Info: Color coding: SDR (Rec. 601)
[2025-05-26 11:30:08.932]: Info: Color depth: 8-bit
[2025-05-26 11:30:08.932]: Info: Color range: JPEG
[2025-05-26 11:30:08.963]: Info: NvEnc: created encoder HEVC P1 async two-pass rfi
[2025-05-26 11:30:08.983]: Info: Client dynamicRange: 0, Display is HDR: true
[2025-05-26 11:30:08.983]: Info: Creating encoder [av1_nvenc]
[2025-05-26 11:30:08.983]: Info: Color coding: SDR (Rec. 601)
[2025-05-26 11:30:08.983]: Info: Color depth: 8-bit
[2025-05-26 11:30:08.983]: Info: Color range: JPEG
[2025-05-26 11:30:09.018]: Info: NvEnc: created encoder AV1 P1 async two-pass rfi
[2025-05-26 11:30:09.038]: Info: Client dynamicRange: 0, Display is HDR: true
[2025-05-26 11:30:09.038]: Info: Creating encoder [h264_nvenc]
[2025-05-26 11:30:09.038]: Info: Color coding: SDR (Rec. 601)
[2025-05-26 11:30:09.038]: Info: Color depth: 8-bit
[2025-05-26 11:30:09.038]: Info: Color range: JPEG
[2025-05-26 11:30:09.073]: Info: NvEnc: created encoder H.264 P1 async yuv444 two-pass rfi
[2025-05-26 11:30:09.270]: Info: 
Device Description : NVIDIA GeForce RTX 4090
Device Vendor ID   : 0x000010DE
Device Device ID   : 0x00002684
Device Video Mem   : 24142 MiB
Device Sys Mem     : 0 MiB
Share Sys Mem      : 16238 MiB
Feature Level      : 0x0000B100
Capture size       : 3840x2160
Offset             : 0x0
Virtual Desktop    : 3840x2160
[2025-05-26 11:30:09.271]: Info: Active GPU has HAGS enabled
[2025-05-26 11:30:09.271]: Info: Using realtime GPU priority
[2025-05-26 11:30:09.271]: Info: 
Colorspace         : DXGI_COLOR_SPACE_RGB_FULL_G2084_NONE_P2020
Bits Per Color     : 10
Red Primary        : [0.639648,0.330078]
Green Primary      : [0.299805,0.599609]
Blue Primary       : [0.150391,0.0595703]
White Point        : [0.3125,0.329102]
Min Luminance      : 0.01 nits
Max Luminance      : 1499 nits
Max Full Luminance : 799 nits
[2025-05-26 11:30:09.271]: Info: Desktop resolution [3840x2160]
[2025-05-26 11:30:09.271]: Info: Desktop format [DXGI_FORMAT_R16G16B16A16_FLOAT]
[2025-05-26 11:30:09.271]: Info: Display refresh rate [60Hz]
[2025-05-26 11:30:09.271]: Info: Requested frame rate [60fps]
[2025-05-26 11:30:09.271]: Info: Client dynamicRange: 1, Display is HDR: true
[2025-05-26 11:30:09.271]: Info: Creating encoder [hevc_nvenc]
[2025-05-26 11:30:09.271]: Info: Color coding: HDR (Rec. 2020 + SMPTE 2084 PQ)
[2025-05-26 11:30:09.271]: Info: Color depth: 10-bit
[2025-05-26 11:30:09.271]: Info: Color range: JPEG
[2025-05-26 11:30:09.366]: Info: NvEnc: created encoder HEVC P1 async yuv444 10-bit two-pass rfi
[2025-05-26 11:30:09.400]: Info: Client dynamicRange: 1, Display is HDR: true
[2025-05-26 11:30:09.400]: Info: Creating encoder [av1_nvenc]
[2025-05-26 11:30:09.401]: Info: Color coding: HDR (Rec. 2020 + SMPTE 2084 PQ)
[2025-05-26 11:30:09.401]: Info: Color depth: 10-bit
[2025-05-26 11:30:09.401]: Info: Color range: JPEG
[2025-05-26 11:30:09.464]: Error: NvEnc: gpu doesn't support YUV444 encode
[2025-05-26 11:30:09.464]: Error: NvEnc: NvEncUnregisterAsyncEvent() failed: NV_ENC_ERR_DEVICE_NOT_EXIST
[2025-05-26 11:30:09.480]: Info: Client dynamicRange: 1, Display is HDR: true
[2025-05-26 11:30:09.480]: Info: Creating encoder [av1_nvenc]
[2025-05-26 11:30:09.480]: Info: Color coding: HDR (Rec. 2020 + SMPTE 2084 PQ)
[2025-05-26 11:30:09.480]: Info: Color depth: 10-bit
[2025-05-26 11:30:09.480]: Info: Color range: JPEG
[2025-05-26 11:30:09.518]: Info: NvEnc: created encoder AV1 P1 async 10-bit two-pass rfi
[2025-05-26 11:30:09.545]: Info: 
[2025-05-26 11:30:09.545]: Info: // Ignore any errors mentioned above, they are not relevant. //
[2025-05-26 11:30:09.545]: Info: 
[2025-05-26 11:30:09.545]: Info: Found H.264 encoder: h264_nvenc [nvenc]
[2025-05-26 11:30:09.545]: Info: Found HEVC encoder: hevc_nvenc [nvenc]
[2025-05-26 11:30:09.545]: Info: Found AV1 encoder: av1_nvenc [nvenc]
[2025-05-26 11:30:09.555]: Info: Configuration UI available at [https://localhost:47990]
[2025-05-26 11:30:10.335]: Info: Registered Apollo mDNS service
[2025-05-26 11:30:11.222]: Info: Web UI: [192.168.10.50] -- redirecting
[2025-05-26 11:31:08.572]: Info: Display mode for client [MacBook Pro] requested to [3456x2160x120]
[2025-05-26 11:31:08.615]: Info: Trying to apply display device settings. API is available: true
[2025-05-26 11:31:08.615]: Info: Using the following configuration:
{
  "device_id": "{6d6e7d6b-6f64-533f-8f5f-2bc3672c4060}",
  "device_prep": "EnsurePrimary",
  "hdr_state": "Enabled",
  "refresh_rate": {
    "type": "rational",
    "value": {
      "denominator": 1000,
      "numerator": 120000
    }
  },
  "resolution": {
    "height": 2160,
    "width": 3456
  }
}
[2025-05-26 11:31:08.615]: Info: Active topology before any changes:
[
  [
    "{a9852c26-b220-5dcc-973c-624a6789f50b}"
  ]
]
[2025-05-26 11:31:08.616]: Info: Currently available devices:
[
  {
    "device_id": "{6d6e7d6b-6f64-533f-8f5f-2bc3672c4060}",
    "display_name": "",
    "edid": {
      "manufacturer_id": "XMD",
      "product_code": "009A",
      "serial_number": 0
    },
    "friendly_name": "",
    "info": null
  },
  {
    "device_id": "{a9852c26-b220-5dcc-973c-624a6789f50b}",
    "display_name": "\\\\.\\DISPLAY1",
    "edid": {
      "manufacturer_id": "GSM",
      "product_code": "C0C8",
      "serial_number": 16843009
    },
    "friendly_name": "",
    "info": {
      "hdr_state": "Enabled",
      "origin_point": {
        "x": 0,
        "y": 0
      },
      "primary": true,
      "refresh_rate": {
        "type": "rational",
        "value": {
          "denominator": 1,
          "numerator": 60
        }
      },
      "resolution": {
        "height": 2160,
        "width": 3840
      },
      "resolution_scale": {
        "type": "rational",
        "value": {
          "denominator": 100,
          "numerator": 250
        }
      }
    }
  }
]
[2025-05-26 11:31:08.616]: Info: Will compute new display device topology from the following input:
  - initial topology: [["{a9852c26-b220-5dcc-973c-624a6789f50b}"]]
  - initial primary devices: ["{a9852c26-b220-5dcc-973c-624a6789f50b}"]
  - configuring unspecified device: false
  - device to configure: "{6d6e7d6b-6f64-533f-8f5f-2bc3672c4060}"
  - additional devices to configure: []
[2025-05-26 11:31:08.616]: Info: Newly computed display device topology data:
  - topology: [["{a9852c26-b220-5dcc-973c-624a6789f50b}"],["{6d6e7d6b-6f64-533f-8f5f-2bc3672c4060}"]]
  - change is needed: true
  - additional devices to configure: []
[2025-05-26 11:31:09.006]: Error: Failed to change topology due to Windows bug or because the display is in deep sleep!
[2025-05-26 11:31:09.135]: Error: Failed to apply new configuration, because a new topology could not be set!
[2025-05-26 11:31:09.135]: Error: [code: ERROR_NOT_SUPPORTED, message: The request is not supported] failed to get display paths and modes!
[2025-05-26 11:31:09.135]: Warning: Topology input is empty!
[2025-05-26 11:31:09.135]: Error: Failed to get current topology!
[2025-05-26 11:31:09.135]: Error: Failed to revert back to topology in the topology guard!
[2025-05-26 11:31:09.158]: Error: No display devices are active at the moment! Cannot probe the encoders.

[MarceloMachadoxD]

im be able to do it if i create the virtual destop with https://github.com/VirtualDrivers/Virtual-Display-Driver/releases but i need to run sunshine from terminal to get the diplay id and set it manually on config> audio & video > display id
it need to be the full id like {abc-123} akk description inside the quotes(but without quotes) as displayed on terminal

[ReenigneArcher]

You can get the display id in the logs on the troubleshooting tab in the web-ui

[wsnxx]

I have the exact same setup as yours, and I’m looking for a solution too! A workaround is to use RDP to “kick” the display driver or whatever it is called, then Sunshine will be able to stream.

[ReenigneArcher]

On Windows there is display automation in Sunshine, which can activate the display for you.

[wsnxx]

Yes, I did that, set Sunshine to activate the dummy. The problem is, it worked for like 30 minutes after I turn off the OLED (the lg tv will then go to “deep sleep” after a certain amount of time), and Sunshine returns the same error code. I think LG OLED TVs have this weird power state that causes confusion on Windows…

[ReenigneArcher]

[2025-05-26 11:30:06.980]: Info: Apollo version: v0.3.4
[2025-05-26 11:30:06.980]: Info: Package Publisher: SudoMaker
[2025-05-26 11:30:06.980]: Info: Publisher Website: https://www.sudomaker.com
[2025-05-26 11:30:06.980]: Info: Get support: https://github.com/ClassicOldSong/Apollo/issues

Why are you asking for support for Apollo from us? This isn't Apollo...