[BUG] Error: GPU detection failed on Android (Termux).

[AcatXIo]

General description of bug:

• What happened:
  I'm using Motorola G32 smartphone with Qualcomm SM6225 Snapdragon 680 4G chipset, Adreno 610 GPU, and LineageOS 21.0-20240525 (Android 14) custom ROM installed and rooted.
  I installed fastfetch on it with Termux using pkg install fastfetch.
  Running fastfetch -c all.jsonc (both with and without root permissions) doesn't show the GPU, and running with --fomat json shows "error": "GPU detection failed".
  CPU detection works correctly.
  I also tried --gpu-detection-method pci, --gpu-detection-method vulkan and --gpu-detection-method opengl, but all of them also failed to detect the GPU.
  I tried some android system information apps from play store, and those did detect the GPU correctly.

• What should happen: The GPU detection should work correctly, or a more descriptive error should be printed, explaining why it doesn't work.

• Fastfetch version used: 2.13.2.

• Did it work in an older version: I don't know.

• Where did you get the binary: Termux pkg install fastfetch.

• Does this issue still occurs in the latest dev build: Yes.

Often helpful information:

The content of the configuration file you use (if any): I used all.jsonc without changes.

Output of fastfetch -c ci.jsonc --format json:

{
  "type": "GPU",
  "error": "GPU detection failed"
}

Output of fastfetch --list-features:

threads
vulkan
freetype
linux/videodev2
linux/wireless

[CarterLi]

What does fastfetch -s vulkan --format json print?

[AcatXIo]

{
  "type": "Vulkan",
  "error": "ffvkCreateInstance() failed"
}

The phone/OS supports Vulkan API version 1.1.

[CarterLi]

{
  "type": "Vulkan",
  "error": "ffvkCreateInstance() failed"
}

No luck. Fastfetch relies on working Vulkan driver reporting GPU models. All other methods are disabled on Vulkan because they are known not to work in non-rooted devices.

[CarterLi]

some android system information apps from play store

Fastfetch has much more limitations compare to native android apps, because fastfetch doesn't have access to the Android Java APIs.

[CarterLi]

In v2.14.0, fastfetch will report more information about why creating vulkan instance fails. You should try it after fastfetch gets updated by Termux

[AcatXIo]

It now says:

{
  "type": "Vulkan",
  "error": "ffvkCreateInstance() failed: VK_ERROR_INCOMPATIBLE_DRIVER"
}

Is there any way I can fix this, or is this the OS's fault?

[CarterLi]

That means the OS doesn't provide a proper GPU driver with vulkan support.

It should print something like this

[
  {
    "type": "Vulkan",
    "result": {
      "apiVersion": "1.3.128",
      "conformanceVersion": "1.3",
      "driver": "Qualcomm Technologies Inc. Adreno Vulkan Driver",
      "gpus": [
        {
          "type": "Integrated",
          "vendor": "Qualcomm",
          "name": "Adreno (TM) 750",
          "driver": "Driver Build: 62c1f322ce, Id0077aad60, 1700555917\nDate: 11/21/23\nCompiler Version: E031.42.23.09\nDriver Branch: \n",
          "platformApi": "Vulkan 1.3.128",
          "memory": {
            "dedicated": {
              "total": 0,
              "used": null
            },
            "shared": {
              "total": 20240965632,
              "used": null
            }
          },
          "deviceId": 1124406273
        }
      ]
    }
  }
]

You can test the vulkan module on Windows too.

[AcatXIo]

Well on my older laptops, which don't support vulkan, I get:

{
  "type": "Vulkan",
  "error": "ffvkEnumeratePhysicalDevices() failed: VK_ERROR_INITIALIZATION_FAILED"
}

And on newer ones I get:

{
  "type": "Vulkan",
  "result": {
    "apiVersion": "1.2.203",
    "conformanceVersion": "1.2.1",
    "driver": "Intel Corporation [Intel driver]",
    "gpus": [
      {
        "type": "Integrated",
        "vendor": "Intel",
        "name": "Intel(R) HD Graphics 620",
        "driver": "Intel driver",
        "platformApi": "Vulkan 1.2.203",
        "memory": {
          "dedicated": {
            "total": 0,
            "used": null
          },
          "shared": {
            "total": 8515602432,
            "used": null
          }
        },
        "deviceId": 22806
      }
    ]
  }
}

And:

{
  "type": "Vulkan",
  "result": {
    "apiVersion": "1.3.277",
    "conformanceVersion": "1.3.2",
    "driver": "NVIDIA [552.12]",
    "gpus": [
      {
        "type": "Discrete",
        "vendor": "NVIDIA",
        "name": "NVIDIA GeForce GTX 1060 with Max-Q Design",
        "driver": "552.12",
        "platformApi": "Vulkan 1.3.277",
        "memory": {
          "dedicated": {
            "total": 6548357120,
            "used": null
          },
          "shared": {
            "total": 17154297856,
            "used": null
          }
        },
        "deviceId": 7264
      }
    ]
  }
}

Btw. Here is more information about the Vulkan setup that I have on my phone: https://vulkan.gpuinfo.org/displayreport.php?id=30816
Maybe you will know why exactly is it incompatible, since I've got no idea.

[CarterLi]

You need to ask LineageOS. GPU / hardware support is not enough. A proper driver need to be installed to.

[AcatXIo]

Alright, thanks for your help. I will ask them now.