ubuntu重启后分辨率为1024，nvidia-smi不能用-20200819

无法连接NVIDIA驱动：NVIDIA-SMI has failed because it couldn’t communicate with the NVIDIA driver
CASE SOLVED：NVIDIA-SMI has failed because it couldn’t communicate with the NVIDIA driverr

当时是为了调节屏幕明亮，按照https://www.maketecheasier.com/configure-screen-brightness-in-ubuntu/安装了indicator-brightness和xbacklight（现在想应该无关），重启后分辨率只有1024不能调节，nvidia-smi也不能用
后来在春计划群里询问，按照nvidia-smi故障搜索，最终在上面两个链接中尝试成功！
加油！

Ubuntu16.04切换系统内核：要重启才有效果

[Error unknown command hwmatch [closed]]https://askubuntu.com/questions/766355/error-unknown-command-hwmatch不知道有没有用？

211019新：
nvidia-smi报错：NVIDIA-SMI has failed because it couldn’t communicate with the NVIDIA driver，重启后分辨率没有将为1024
命令行安装nvidia.470失败。
software-update中安装460和470均可成功。但nvidia-smi仍报错。
降低版本内核：https://blog.youkuaiyun.com/qq_42030961/article/details/82740315讲解1> 3的来由，然后需要重启
sudo apt-get install dkms
sudo dkms install -m nvidia -v 470.40
结果460版本碰到问题是开机后输入密码后又调到输入密码界面，网上教程试了半天均不奏效。
删除460(apt-get remove --purge nvidia*)，安装470(software-update中），sudo dkms install -m nvidia -v 470.40终于好了。

220517更新：
NVIDIA驱动出错：NVIDIA-SMI has failed because it couldn‘t communicate with the NVIDIA driver. Make sure t
成功！

cd /usr/src
sudo apt-get install dkms
ls
sudo dkms install -m nvidia -v 470.182.03