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I installed Ubuntu 14.04 on my new Toshiba Satellite C75D a number of months ago, and everything worked great for months. Then suddenly, I didn't have wifi access anymore. I can connect by wire.

rfkill list says that my wireless LAN is both hard and soft blocked.

When I try to toggle the switch on the Network Manager to "on" for wifi, it won't let me.

My "hard switch" is the F12 key, but it doesn't seem to to anything.

Someone else had a similar question that didn't seem to get answered, except for the problem they had with suspend: 14.04 LTS on Toshiba Satellite C75D-B. Brightness, WiFi, Fn-keys control and Suspend problems.

Output of lspci -knn | grep Net -A2: 

05:00.0 Network controller [0280]: Qualcomm Atheros AR9485 Wireless Network Adapter [168c:0032] (rev 01)
    Subsystem: Lite-On Communications Inc Device [11ad:8631]
    Kernel driver in use: ath9k

It is not a dual boot system. I set it up to be Ubuntu only.

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  • Is this a Dualboot system? – xangua Jul 11 '15 at 18:07
  • Please edit your question and add output of lspci -knn | grep Net -A2 terminal command. – Pilot6 Jul 11 '15 at 21:40
  • Thank you. I added the output. And no, it is not Dualboot. – Crystal Trice Jul 12 '15 at 20:48
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It's fixed! I followed the advice found here: My wireless has suddenly became disabled by hardware switch, BIOS, rfkill, fn+f8 do nothing

  1. Unplug and remove battery
  2. Press power button at least 30 seconds
  3. Boot up and enter BIOS settings
  4. Set to defaults I connected to wireless right away! Happy day!
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