install nvidia drivers

• 启动电脑时狂按Esc，选择Advanced options for Ubuntu进入recovery mode
  • 选择network
  • 选择dpkg
  • 选择root
• ubuntu-drivers devices 或 list
• sudo ubuntu-drivers autoinstall
  • 或sudo ubuntu-drivers install driver-name
• sudo reboot

 启动后，分辨率只有640x480

• sudo vim /etc/default/grub
• duplicate the line: #GRUB_GFXMODE=640x480
• replace 640x480 in the new line to 1920x1080 then ZZ
• sudo update-grub
• sudo reboot

 如果驱动安装成功，分辨率切换成功，系统却很卡顿，帧率低

• 点击Software Updates工具：安装附件驱动里的nvidia专用驱动，然后重启