1. 显卡直通后无法开启电源
报错如下：
Module 'DevicePowerOn' power on failed.
解决方法：
在虚拟机高级选项里面添加参数 （note：这个其实是ubuntu 18.04，当初ubuntu16.04装驱动现实gcc内核编译版本不匹配，后面装了ubuntu 18.04名字打错了。）
pciPassthru.use64bitMMIO = TRUE
pciPassthru.64bitMMIOSizeGB = 96
参考 https://gridforums.nvidia.com/default/topic/1037/general-discussion/esxi-6-5-tesla-m60-cant-start-vw/
2. 在能开启电源后，无法打上驱动。Unable to determine if Secure Boot is enabled
报错如下：
-> done.
-> Kernel module compilation complete.
-> Unable to determine if Secure Boot is enabled: No such file or directory
ERROR: Unable to load the kernel module ‘nvidia.ko’. This happens most frequently when t
his kernel module was built against the wrong or improperly configured kernel sources, wi
th a version of gcc that differs from the one used to build the target kernel, or if a dr
iver such as rivafb, nvidiafb, or nouveau is present and prevents the NVIDIA kernel modul
e from obtaining ownership of the NVIDIA graphics device(s), or no NVIDIA GPU installed i
n this system is supported by this NVIDIA Linux graphics driver release.
解决方法：
1. 把虚拟机的bios模式改成EFI模式（我重新安装了虚拟机。开始的时候就选择efi模式，安装了系统后，不知道怎么改efi。）。
2. sudo apt install mokutil
3. sudo mokutil --disable-validation
4. reboot
5. 此时电脑重启，出现蓝屏，按任意键，出现四个选项：选择change secure boot state
6. 输入相应密码的第几个字符。然后修改为disable就可以了。
详细操作参考：https://blog.csdn.net/qq_40212975/article/details/106542165
