项目场景：

MMDetection在Windows上装太麻烦了，本来想装个 WSL 来平替一下 Linux 然后配置一下CUDA再装MMDetection，结果发现也是不少坑。

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问题描述

配置CUDA的过程中，当执行到sudo dpkg -i cuda-repo-wsl-ubuntu-11-7-local_11.7.0-1_amd64.deb ，报错如下

sudo dpkg -i cuda-repo-wsl-ubuntu-11-7-local_11.7.0-1_amd64.deb
(Reading database ... 44224 files and directories currently installed.)                                                                                                                                            
Preparing to unpack cuda-repo-wsl-ubuntu-11-7-local_11.7.0-1_amd64.deb ...                                                                                                                                         
Unpacking cuda-repo-wsl-ubuntu-11-7-local (11.7.0-1) over (11.7.0-1) ...                                                                                                                                           
Setting up cuda-repo-wsl-ubuntu-11-7-local (11.7.0-1) ...                                                                                                                                                                                                                                                                                                                                                                             
The public CUDA GPG key does not appear to be installed.                                                                                                                                                           
To install the key, run this command:                                                                                                                                                                              
sudo cp /var/cuda-repo-wsl-ubuntu-11-7-local/cuda-B81839D3-keyring.gpg /usr/share/keyrings/ 

执行了一下sudo cp /var/cuda-repo-wsl-ubuntu-11-7-local/cuda-B81839D3-keyring.gpg /usr/share/keyrings/ 之后再安装仍然报相同的错误。

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解决方案：

原帖：Can’t install cuda on wsl2. “The public CUDA GPG key does not appear to be installed.”

方案一

跟我同样的问题，原帖4L给出了一个方法

sudo mv /usr/share/keyrings/cuda-archive-keyring.gpg \
        /usr/share/keyrings/cuda-archive-keyring.gpg.bak

sudo cp /var/cuda-repo-wsl-ubuntu-11-7-local/cuda-B81839D3-keyring.gpg \
        /usr/share/keyrings/cuda-archive-keyring.gpg

sudo dpkg -i cuda-keyring_1.0-1_all.deb

sudo mv /usr/share/keyrings/cuda-archive-keyring.gpg.bak \
        /usr/share/keyrings/cuda-archive-keyring.gpg

试了一下，四个命令有两个不能执行，但是执行后重新启动一下WLS再安装确实有效。具体的解释我贴一下截图，感兴趣的可以看原帖。

方案二

是用官方建议下载runfile类型的，即