After upgrade, my hardware switch for wifi (accessed by Fn + function
key) stopped working. But, all other function keys to control display
brightness, volume, mute have been working fine.
There are some pages on askubuntu.com which discuss the same problem
that I have. But, they talk about re-installing broadcom drivers, etc. I
checked mine and I seem to have a qualcomm device instead of broadcom.
~$ lspci -vnn | grep Network
06:00.0 Network controller : Qualcomm Atheros QCA9565 / AR9565 Wireless
Network Adapter [168c:0036] (rev 01)
Subsystem: Dell QCA9565 / AR9565 Wireless Network Adapter [1028:020c]
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wifi broke after 16.04 upgrade
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