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I am having similar issues to this question. I have Googled around a great deal and tried many things, but I cannot seem to find a solution. I am currently dual booting Windows 10 and Ubuntu 20.04 on a custom built PC using a ROG STRIX Z690-A Gaming Wifi D4, and the wifi adapter is working in the Windows partition but appears to be unfound in the Ubuntu partition.

I have downloaded the drivers directly from Intel for the Intel Wi-Fi 6 AX201, which is what I believe the Wifi module is.

I have tried using the backport-iwlwifi package.

I have disabled fastboot in Windows, in the BIOS, and disabled Windows from being able to turn off the wireless adapter and any networking adapter.

Here is the result of sudo lshw -C network on my system

  *-network UNCLAIMED       
       description: Network controller
       product: Intel Corporation
       vendor: Intel Corporation
       physical id: 14.3
       bus info: pci@0000:00:14.3
       version: 11
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix cap_list
       configuration: latency=0
       resources: iomemory:400-3ff memory:401421c000-401421ffff
  *-network
       description: Ethernet interface
       product: Intel Corporation
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:06:00.0
       logical name: enp6s0
       version: 03
       serial: <redacted>
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi msix pciexpress bus_master cap_list ethernet physical 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=igc driverversion=5.11.0-41-generic latency=0 link=no multicast=yes port=twisted pair
       resources: irq:19 memory:85b00000-85bfffff memory:85c00000-85c03fff
  *-network
       description: Ethernet interface
       physical id: 2
       bus info: usb@1:1
       logical name: usb0
       serial: <redacted>
       capabilities: ethernet physical
       configuration: broadcast=yes driver=rndis_host driverversion=5.11.0-41-generic firmware=RNDIS device ip=192.168.240.244 link=yes multicast=yes

And here is the result of lspci -knn | grep Net -A3

00:14.3 Network controller [0280]: Intel Corporation Device [8086:7af0] (rev 11)
    DeviceName: Onboard - Ethernet
    Subsystem: Intel Corporation Device [8086:0074]
00:15.0 Serial bus controller [0c80]: Intel Corporation Device [8086:7acc] (rev 11)

Any assistance would be greatly appreciated, thanks.

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