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Sorry if this has been posted before, I searched previous questions but didn't find one that fit my specific issue and laptop model.

As the title says I just upgraded from Ubuntu 16.04 LTS to 20.04 LTS and now the wifi icon at the top doesn't show up and when I search Wi-Fi settings I get "No Wi-Fi adapter found"

I have access to a USB to ethernet adapter if I need to download any drivers or install updates and have already disabled secure boot in the BIOS options.

I ran lspci and my network controller is Intel Corporation Wireless 8260 (rev 3a)

uname says my kernel version is 5.4.0-1035-gke

Let me know if I should gather any further info or if I should just replace my wireless card, and if so which one is the best replacement.

Thanks!

Edit: my ethernet adapter isn't working either so I don't currently have internet access on the laptop. In order to get the ethernet working I had to boot into a different kernel available to me on restart (5.4.0-65-generic)

Output from sudo lshw -c network with kernel 5.4.0-1035-gke:

*-network UNCLAIMED 
description: Network controller 
product: Wireless 8260 
vendor: Intel Corporation 
physical id: 0 
bus info: pci@0000:3a:00.0 
version: 3a 
width: 64 bits 
clock: 33MHz 
capabilities: pm msi pciexpress cap_list 
configuration: latency=0 
resources: memory:dc200000-dc201fff

Output from sudo lshw -c network with kernel 5.4.0-65-generic:

  *-network                 
       description: Wireless interface
       product: Wireless 8260
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:3a:00.0
       logical name: wlp58s0
       version: 3a
       serial: e4:a7:a0:8f:85:68
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=5.4.0-65-generic firmware=36.77d01142.0 ip=192.168.2.20 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:136 memory:dc200000-dc201fff
  *-network
       description: Ethernet interface
       physical id: 2
       bus info: usb@2:1
       logical name: enx000ec6bd7ad0
       serial: 00:0e:c6:bd:7a:d0
       size: 1Gbit/s
       capacity: 1Gbit/s
       capabilities: ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=ax88179_178a duplex=full ip=192.168.2.106 link=yes multicast=yes port=MII speed=1Gbit/s

No additional drivers are available in the software and updates center

Edit2: My wireless card also seems to be working now that I'm using the older kernel, should I continue booting into this kernel then and that solves my issue? Are there any issues with doing this and will future updates create more problems?

Jared Lauer
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  • Can you run sudo lshw -c network and check what shows up under wireless interface? Also check that you have the correct drivers installed using the software & updates center under the tab "additional drivers" -- Edit: It looks like the correct drivers are not installed. I found the following post which might help: https://askubuntu.com/questions/728874/intel-corporation-wireless-8260-808624f3-rev-3a. – zainosaurus Feb 13 '21 at 19:10
  • What happens if you do sudo apt install --reinstall linux-modules-extra-5.4.0-1035-gke then reboot and try that kernel – Jeremy31 Feb 14 '21 at 10:01

1 Answers1

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Whenever you have a dual boot system with Windows the fast boot mechanism of Windows may cause problems. Thus, turn it off in Windows as explained in this post here and the issue may go away. At least my Thinkpad L480 running Debian Bullseye accepted the solution.

hubchev
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