解决ubunti16.04wifi无法使用，，打不开，，fn+f2无法使用的问题

原地址 https://ubuntuforums.org/showthread.php?t=2181558

1) Check if a driver is available for the card (open a terminal with Ctrl-Alt-T and enter the following command in it) :

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lspci -nnk | grep -A2 0280

Notice the last line that says "Kernel driver in use:".

Is there a module name in front of it? (e.g. "Kernel driver in use: ath9k")

2) Check if the driver is loaded and if "asus_nb_wmi" driver is also in use :

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lsmod | grep -e ath9k -e asus

(replace "ath9k" with whatever driver is used by your wireless)

Do you see the driver for your card, and "asus_nb_wmi" both in the above output?

3) Check the "Hard blocked" state of wifi -

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rfkill list all

Note the state of the "phy0" interface.

Does it show as "Hard blocked: yes" ?

4) Suspend the notebook by pressing Fn+F1 (or any other way) --> then resume it again.

Does the wireless become active now?

If the answer to all four checks above is yes (no.4 may be an exception for a few), then your system has this bug and the workaround is as follows -