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About a week ago, my computer abruptly disconnected from my Wi-Fi. Now I can't find the Wi-Fi menu in the settings and the Bluetooth is not working either, the toggle in the settings doesn't do anything. I tried various solutions from different forums, but none of them worked. Here is a list of outputs that may be useful.

  1. dmesg | grep -i bluetooth

    [    3.810679] Bluetooth: Core ver 2.22  
[    3.810727] NET: Registered PF_BLUETOOTH protocol family  
[    3.810731] Bluetooth: HCI device and connection manager initialized  
[    3.810916] Bluetooth: HCI socket layer initialized  
[    3.810921] Bluetooth: L2CAP socket layer initialized  
[    3.810930] Bluetooth: SCO socket layer initialized  
[    3.946449] Bluetooth: hci0: Bootloader revision 0.0 build 42 week 52 2015  
[    3.948664] Bluetooth: hci0: Device revision is 0  
[    3.948670] Bluetooth: hci0: Secure boot is disabled  
[    3.948672] Bluetooth: hci0: OTP lock is disabled  
[    3.948675] Bluetooth: hci0: API lock is disabled  
[    3.948677] Bluetooth: hci0: Debug lock is disabled  
[    3.948679] Bluetooth: hci0: Minimum firmware build 0 week 0 2000  
[    3.948683] Bluetooth: hci0: No device address configured  
[    3.949230] Bluetooth: hci0: Failed to load Intel firmware file intel/ibt-17-0-0.sfi (-2)  
[    3.951350] Bluetooth: hci0: Opcode 0x c03 failed: -56  
[    3.954741] Bluetooth: hci0: Failed to read MSFT supported features (-56)  
[    4.296585] Bluetooth: BNEP (Ethernet Emulation) ver 1.3  
[    4.296593] Bluetooth: BNEP filters: protocol multicast
[    4.296600] Bluetooth: BNEP socket layer initialized

    I tried looking for the missing firmware file here: https://anduin.linuxfromscratch.org/sources/linux-firmware/intel/ but it's missing there too.

  2. dmesg | grep -i iwl

    [    2.504113] iwlwifi 0000:00:14.3: enabling device (0000 -> 0002)
[    2.519800] iwlwifi 0000:00:14.3: Can find a correct rfid for crf id 0x816
[    2.519863] iwlwifi: probe of 0000:00:14.3 failed with error -22

  3. lshw -class network

      *-network UNCLAIMED       
       description: Network controller
       product: Cannon Point-LP CNVi [Wireless-AC]
       vendor: Intel Corporation
       physical id: 14.3
       bus info: pci@0000:00:14.3
       version: 30
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix cap_list
       configuration: latency=0
       resources: memory:b431c000-b431ffff

  4. ifconfig -a

    lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 13227  bytes 1142334 (1.1 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 13227  bytes 1142334 (1.1 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

To my understanding, the fact that ifconfig only shows a loopback interface and the status UNCLAIMED network indicate that my system somehow fails to recognize my network card.

I tried updating all the firmware files in /usr/lib/firmware/intel and also installing the following package following the advice found here, but it didn't help.

I have Windows in dual boot, so I tried addressing the issue from there, but my network card was missing from the device manager and so was the Bluetooth: I even tried taking apart my PC thinking that maybe it could be a hardware issue (like some disconnected wires) but everything seems fine.

I tried my best, but I honestly have no idea what's going on, any input would be very appreciated.

Pablo Bianchi
  • 17,371
Luca Nagni
  • 21

1 Answers1

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If it has disappeared from windows also, you likely have a hardware problem. You might get lucky checking your bios for a misconfiguration or maybe reflashing it.

Sometimes those CNVi modules can be replaced, they go in an m2 slot and I've seen them for sale less than $20.

KahnD
  • 11