ctx-＞cvdl-＞cuvidGetDecoderCaps(&ctx-＞caps8) failed -＞ CUDA_ERROR_DEINITIALIZED: driver shutting down

 　　吾有专门文章介绍如何在FFMPEG中使用NVIDIA硬件编解码。然后在Freeswitch中使用，并给别人提供了技术指导。

 　　从某一时间开始，吾发现Freeswitch无法使用硬件编解码，编码无效，解码直接崩溃。吾后来使用ffmpeg测试：

ffplay -vcodec h264_cuvid sample_720p-2.h264       

　直接报错。 

[quantum6@freeswitch freeswitch]$ ffplay -vcodec h264_cuvid sample_720p-2.h264 
ffplay version 4.3.1 Copyright (c) 2003-2020 the FFmpeg developers
  built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-44)
  configuration: --extra-cflags='-I/usr/local/cuda/include -fPIC ' --extra-ldflags='-L/usr/local/cuda/lib64 -ldl ' --pkg-config-flags=--static --enable-shared --enable-static --enable-sdl --enable-gpl --enable-libx264 --enable-cuvid --enable-nvenc --enable-nonfree --nvcc='nvcc=/usr/local/cuda/bin/nvcc'
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
Input #0, h264, from 'sample_720p-2.h264':    0KB sq=    0B f=0/0   
  Duration: N/A, bitrate: N/A
    Stream #0:0: Video: h264 (High), yuv420p(progressive), 1280x720, 30 fps, 30 tbr, 1200k tbn, 60 tbc
[h264_cuvid @ 0x7f38c8028180] ctx->cvdl->cuvidGetDecoderCaps(&ctx->caps8) failed -> CUDA_ERROR_DEINITIALIZED: driver shutting down
[h264_cuvid @ 0x7f38c8028180] ctx->cvdl->cuvidGetDecoderCaps(&ctx->caps10) failed
[h264_cuvid @ 0x7f38c8028180] ctx->cvdl->cuvidGetDecoderCaps(&ctx->caps12) failed
Failed to open file 'sample_720p-2.h264' or configure filtergraph
    nan    :  0.000 fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0         

 　　网上查了一下，以下方法测试无效：

./configure --enable-cuda --enable-nvenc --enable-cuvid --enable-libnpp --extra-cflags=-I<path_to_libnpp_headers> --extra-ldflags=-L<path_to_libnpp_libraries>       

 　　吾反复安装系统，有十几次，都不成功。甚至有几次机器都开不了机。为什么开枪有问题？经过分析是显卡问题。于是吾就猜测，是显卡出问题，导致硬件编解码失败。