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Ubuntu

Ubuntu 20.04.3 LTS - No Wi-Fi Adapter Found

Clay

1/8/23, 6:55 PM

I have just installed Ubuntu and Settings > WiFi indicates no wifi adapter found. I believe the hardware is supported. I have tried troubleshooting by googling solutions but have had no luck.

I generated a text file that is fairly long with a lot of wireless info (using instructions here) that I can provide if that's helpful.

Any help is greatly appreciated.

cbm@cbm-XPS-2017:~$ sudo lshw -C network
[sudo] password for cbm: 
  *-network                 
       description: Network controller
       product: Wireless 8265 / 8275
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:3c:00.0
       version: 78
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list
       configuration: driver=iwlwifi latency=0
       resources: irq:148 memory:d8a00000-d8a01fff
cbm@cbm-XPS-2017:~$

cbm@cbm-XPS-2017:~$ iwconfig
lo        no wireless extensions.

usb0      no wireless extensions.

cbm@cbm-XPS-2017:~$

Editing to add sudo dmesg | grep iwl

cbm@cbm-XPS-2017:~$ sudo dmesg | grep iwl
[sudo] password for cbm: 
[    4.222408] iwlwifi 0000:3c:00.0: enabling device (0000 -> 0002)
[    4.233606] iwlwifi 0000:3c:00.0: Found debug destination: EXTERNAL_DRAM
[    4.233612] iwlwifi 0000:3c:00.0: Found debug configuration: 0
[    4.234321] iwlwifi 0000:3c:00.0: loaded firmware version 36.77d01142.0 8265-36.ucode op_mode iwlmvm
[    4.360723] iwlwifi 0000:3c:00.0: Detected Intel(R) Dual Band Wireless AC 8265, REV=0x230

Editing to add sudo dmesg | grep -e 3c:00 -e wl

cbm@cbm-XPS-2017:~$ sudo dmesg | grep -e 3c:00 -e wl
[sudo] password for cbm: 
[    0.549616] pci 0000:3c:00.0: [8086:24fd] type 00 class 0x028000
[    0.549708] pci 0000:3c:00.0: reg 0x10: [mem 0xd8a00000-0xd8a01fff 64bit]
[    0.550138] pci 0000:3c:00.0: PME# supported from D0 D3hot D3cold
[    4.222408] iwlwifi 0000:3c:00.0: enabling device (0000 -> 0002)
[    4.233606] iwlwifi 0000:3c:00.0: Found debug destination: EXTERNAL_DRAM
[    4.233612] iwlwifi 0000:3c:00.0: Found debug configuration: 0
[    4.234321] iwlwifi 0000:3c:00.0: loaded firmware version 36.77d01142.0 8265-36.ucode op_mode iwlmvm
[    4.360723] iwlwifi 0000:3c:00.0: Detected Intel(R) Dual Band Wireless AC 8265, REV=0x230

Full wireless info is located here: https://pastebin.ubuntu.com/p/qVpzVMmXM2/

262

0 + 8

networking

iwlwifi

chili555

1/8/23, 7:32 PM

Please edit your question to show the result of the terminal command: `sudo dmesg | grep iwl` Welcome to Ask Ubuntu.

Clay

1/8/23, 8:15 PM

Thank you for your help! I added the requested information.

chili555

1/8/23, 8:28 PM

Wonderful! Nothing useful at all. Let's dig deeper: `sudo dmesg | grep -e 3c:00 -e wl`

Clay

1/8/23, 8:38 PM

@chili555 Added the additional information... hopefully something helpful :)

chili555

1/8/23, 9:07 PM

Please provide the entire wireless info result. As the result is lengthy,paste the results here and give us the link: http://paste.ubuntu.com

Clay

1/8/23, 9:17 PM

I added the link w/ the full wireless info. Thank you! (I also just noticed you are a contributor on the script that I used to generate the file!)

chili555

1/8/23, 11:28 PM

I still see nothing wrong and potentially fixable. If you try the live session of Ubuntu from the USB or DVD from which you installed Ubuntu, does the wireless work? If you detach the USB ethernet device and reboot, does Network Manager initiate the wireless? Does it work in Windows? Is it possible that the hardware is defective? Can you try reseating it in its PCIe slot? Are the antenna wires firmly snapped in place? I’m stumped. :-((

Clay

1/9/23, 1:04 AM

I'll try live session later and let you know. Detaching USB doesn't work. I've rebooted several times, and tried disabling WLAN in BIOS and rebooting then re-enabling and rebooting. Unfortunately, and feel free to make fun of me here, I formatted the windows partition already! :( This is an older laptop that's been sitting in a closet and I thought it'd be fun to install ubuntu and set it up as a home media server. Worst case is I have to get a USB wireless card. Thanks so much for all of your help!

Clay

1/11/23, 3:38 AM

Ummmm. It works now. I was getting ready to wipe Ubuntu and reinstall Windows and I changed RAID to AHCI. And now it works. I'm a complete amateur, and I barely know what any of that means, but I feel like this was weird. Any who... I'm going to download Plex Media Server now and pursue my dreams. Thanks @chili555!!

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: Ubuntu 20.04.3 LTS - No Wi-Fi Adapter Found

TH: Ubuntu 20.04.3 LTS - ไม่พบอแด็ปเตอร์ Wi-Fi

RO: Ubuntu 20.04.3 LTS - Nu a fost găsit niciun adaptor Wi-Fi

RU: Ubuntu 20.04.3 LTS — адаптер Wi-Fi не найден

VI: Ubuntu 20.04.3 LTS - Không tìm thấy bộ điều hợp Wi-Fi

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