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I recently installed a fresh copy of Ubuntu 16.04 on my sister's Dell Inspiron 3521. After installing I noticed that the WiFi adapter won't turn on. I could see a Enable WiFi option on the tray icon but when I check that nothing happens. When I do an lspci I see this: 

02:00.0 Network controller: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter (rev 01)

I also checked in my BIOS to see if its disabled through that but I couldn't even find an option there to do that.

When I try rfkill list all I see:

0: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: yes

I'm guessing this is the reason why its not working. How do I resolve this?

electrophile
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1 Answers1

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Dell Inspiron 3521 don't have a hard button to turn WiFi off/on.

Instead toggle by pressing Fn + F2:

image of the keyboard

The output of rfkill list all you provided is particularly useful to detect the problem wasn't elsewhere.

Pablo Bianchi
  • 17,371