错误log如下：
Unpacking nvidia-utils-525 (525.85.05-0ubuntu0.20.04.1) ...
dpkg: error processing archive /var/cache/apt/archives/nvidia-utils-525_525.85.05-0ubuntu0.20.04.1_amd64.deb (--unpack):
unable to make backup link of './usr/bin/nvidia-smi' before installing new version: Operation not permitted
dpkg-deb: error: paste subprocess was killed by signal (Broken pipe)
Errors were encountered while processing:
/var/cache/apt/archives/nvidia-utils-525_525.85.05-0ubuntu0.20.04.1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
分析原因：
Operation not permitted： ./usr/bin/nvidia-smi
解决办法：
chattr -ie ./usr/bin/nvidia-smi
然后再去安装即可。
注：如果chattr -ie ./usr/bin/nvidia-smi报错，参考这个文章，重新编译chattr后再去执行修改即可：
https://editor.csdn.net/md/?articleId=129227812