title: tf.test.is_gpu_available(cuda_only=False, min_cuda_compute_capability=None) returns False
body: <p>I am running an NVIDIA GeFOrce MX150. I've installed CUDA toolkit v10, cuDNN, and tensorflow-gpu.</p>
  
  <pre><code>nvcc --version
  nvcc: NVIDIA (R) Cuda compiler driver
  Copyright (c) 2005-2019 NVIDIA Corporation
  Built on Wed_Oct_23_19:32:27_Pacific_Daylight_Time_2019
  Cuda compilation tools, release 10.2, V10.2.89
  </code></pre>
  
  <pre><code>&gt;&gt;&gt; import tensorflow as tf
  2019-11-23 20:57:00.621530: I tensorflow/stream_executor/platform/default/dso_loader.cc:44] Successfully opened dynamic library cudart64_100.dll
  &gt;&gt;&gt; tf.test.is_built_with_cuda()
  True
  &gt;&gt;&gt; tf.test.is_gpu_available(cuda_only=False, min_cuda_compute_capability=None)
  2019-11-23 20:57:35.881189: I tensorflow/core/platform/cpu_feature_guard.cc:142] Your CPU supports instructions that this TensorFlow binary was not compiled to use: AVX AVX2
  2019-11-23 20:57:35.886829: I tensorflow/stream_executor/platform/default/dso_loader.cc:44] Successfully opened dynamic library nvcuda.dll
  2019-11-23 20:57:35.904122: E tensorflow/stream_executor/cuda/cuda_driver.cc:318] failed call to cuInit: CUDA_ERROR_UNKNOWN: unknown error
  2019-11-23 20:57:35.913593: I tensorflow/stream_executor/cuda/cuda_diagnostics.cc:169] retrieving CUDA diagnostic information for host: [REDACTED]
  2019-11-23 20:57:35.916327: I tensorflow/stream_executor/cuda/cuda_diagnostics.cc:176] hostname: [REDACTED]
  False
  </code></pre>
  
  <p>Can someone help with what's wrong and how to fix it?</p>