原因：联想网卡驱动与ubuntu驱动冲突，联想的优先级排在第一且无法硬件开启，高于ubuntu的优先级
解决方案：

第一：移除联想的驱动优先级

 sudo modprobe -r ideapad_laptop

第二：解锁所有驱动

 rfkill unblock all

第三部：加入开机自动执行

#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.
echo "root密码" |sudo modprobe -r ideapad_laptop
exit 0

第四步：root模式下给权限

chmod +x /etc/rc.local

ok了