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Thread: WiFi not working on Ubuntu 16 fresh installation | Intel Dual Band Wireless-AC 3165

  1. #1
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    WiFi not working on Ubuntu 16 fresh installation | Intel Dual Band Wireless-AC 3165

    Hi,
    I've just installed fresh Ubuntu 16 on my Lenovo Y520-15 alongside Windows 10. WiFi works perfectly fine on Windows, but when I was installing Ubuntu there were no available WiFi connections. I thought it'll install itself with Ubuntu, so I proceeded the installation. However, WiFi still doesn't work. I have Intel Dual Band Wireless-AC 3165 Plus Bluetooth, I've tried copying firmware from Intel site into /lib/firmware but it doesn't work. I also looked at this solution: https://codeyarns.com/2017/02/04/how...ork-in-ubuntu/ but my kernel is 4.10.0-28-generic so the newest one I think (?)
    Well, I have no idea what else can I do to make this work. Do you have any ideas?
    Last edited by apanek; January 17th, 2018 at 02:40 AM.

  2. #2
    Join Date
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    Ubuntu 19.10 Eoan Ermine

    Re: WiFi not working on Ubuntu 16 fresh installation | Intel Dual Band Wireless-AC 31

    Let’s do some diagnostics to see why it isn’t working as expected. Please open the terminal and run and post:
    Code:
    dmesg | grep iwl
    rfkill list all
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  3. #3
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    Re: WiFi not working on Ubuntu 16 fresh installation | Intel Dual Band Wireless-AC 31

    Hi, so it's the output:

    Code:
    ~$ dmesg | grep iwl
    [   12.909036] iwlwifi 0000:03:00.0: Direct firmware load for iwlwifi-7265D-26.ucode failed with error -2
    [   12.909046] iwlwifi 0000:03:00.0: Direct firmware load for iwlwifi-7265D-25.ucode failed with error -2
    [   12.966829] iwlwifi 0000:03:00.0: Direct firmware load for iwlwifi-7265D-24.ucode failed with error -2
    [   12.966838] iwlwifi 0000:03:00.0: Direct firmware load for iwlwifi-7265D-23.ucode failed with error -2
    [   13.225959] iwlwifi 0000:03:00.0: loaded firmware version 22.391740.0 op_mode iwlmvm
    [   13.236955] iwlwifi 0000:03:00.0: Detected Intel(R) Dual Band Wireless AC 3165, REV=0x210
    [   13.239262] iwlwifi 0000:03:00.0: L1 Enabled - LTR Enabled
    [   13.239703] iwlwifi 0000:03:00.0: L1 Enabled - LTR Enabled
    [   13.307926] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
    [   13.726987] iwlwifi 0000:03:00.0 wlp3s0: renamed from wlan0


    Code:
    ~$ rfkill list all
    0: ideapad_wlan: Wireless LAN
    	Soft blocked: no
    	Hard blocked: yes
    1: ideapad_bluetooth: Bluetooth
    	Soft blocked: yes
    	Hard blocked: yes
    2: hci0: Bluetooth
    	Soft blocked: yes
    	Hard blocked: no
    3: phy0: Wireless LAN
    	Soft blocked: no
    	Hard blocked: no

  4. #4
    Join Date
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    Ubuntu 19.10 Eoan Ermine

    Re: WiFi not working on Ubuntu 16 fresh installation | Intel Dual Band Wireless-AC 31

    0: ideapad_wlan: Wireless LAN
    Soft blocked: no
    Hard blocked: yes
    Let me just predict the next three or four posts here:

    * Chili: "Hard blocked usually means that the hardware switch, key combination, sometimes called airplane mode switch, is set to disable the wireless. Find it and switch it."

    * Apanek: "But Chili, I have pushed the button fifty times and it makes no change. The wireless is still hard blocked."

    * Chili: "Let's try another technique. Please open a terminal and do:

    Code:
    sudo modprobe -r ideapad-laptop
    Does your wireless work now?"

    * Apanek: "Wow! It's working! How can we make this permanent?"

    * Chili: "Please open a terminal and do:
    Code:
    echo "blacklist ideapad-laptop" | sudo tee -a /etc/modprobe.d/blacklist.conf
    You should be all set."

    * Apanek: "Awesome! It's working perfectly now."

    Am I right or am I right??
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  5. #5
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    Re: WiFi not working on Ubuntu 16 fresh installation | Intel Dual Band Wireless-AC 31

    Haha yes, you're perfectly right. I've visited some similar threads and tried to push the mentioned button but it haven't worked. Thank you so much kind soul, that's the power of open source, love ya

  6. #6
    Join Date
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    Ubuntu 19.10 Eoan Ermine

    Re: WiFi not working on Ubuntu 16 fresh installation | Intel Dual Band Wireless-AC 31

    Awesome! Glad it's working. Have fun!
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

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