试试这个还蛮能解决问题的 sudo rfkill unblock all 要是提示错误忽略继续下面的命令
sudo service network-manager stop
sudo rmmod acer-wmi
sudo modprobe acer-wmi
sudo rfkill unblock all
sudo service network-manager start
After this step the status message in the Network Manager will be “Wireless is disabled”
Now Enable wireless from the Network Manager using the following commands
sudo rmmod -f acer-wmi
Wireless networks will be detected and connected.
To make this change permanent use
sudo su
echo "blacklist acer-wmi" >> /etc/modprobe.d/blacklist.conf
exit