查看ubuntub版本
cat /etc/os-release
临时切换 grep "menuentry" /boot/grub/grub.cfg
sudo grep "menuentry" /boot/grub/grub.cfg
sudo grub-reboot "Windows Boot Manager (on /dev/sda3)"
reboot
windows 10 to check battery report
powercfg /batteryreport
goto
"https://pcsupport.lenovo.com/us/zh/products/laptops-and-netbooks/thinkpad-t-series-laptops/thinkpad-t440"
download lenova vantage, and, bios