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Hellstormer

Member

Registered: 2022-04-12

Posts: 3

Wlan0 interface not showing up

When using ip link my wlan0 interface doesn't show up under my user account (and I don't have an internet connection). Under root everything works fine.

The first few times I logged into my new user account it also worked but suddenly after a few reboots the interface was gone.
I don't know exactly what caused this. Maybe the installation of a new terminal emulator? I didn't do much else.

I already found a temporary solution on stack overflow:
I can reenable the wlan0 interface with

modprobe -r iwlmvm
modprobe iwlwifi

I don't really understand why this works, what went wrong in the first place and most importantly: How to make it persistent.

My Network controller is Intel Corporation Wireless 8265 / 8275 (rev 78)

Edit: "dmesg | grep iwl" output:

[    2.121960] iwlwifi 0000:3a:00.0: enabling device (0000 -> 0002)
[    2.176810] iwlwifi 0000:3a:00.0: loaded firmware version 36.ca7b901d.0 8265-36.ucode op_mode iwlmvm
[    2.493174] iwlwifi 0000:3a:00.0: Detected Intel(R) Dual Band Wireless AC 8265, REV=0x230
[    2.562378] iwlwifi 0000:3a:00.0: base HW address: 68:ec:c5:b1:9b:b7
[    2.672947] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'

Edit2: Apparently the temporary solution is persistent. That means the wlan0 interface crashes (or whatever) "randomly"

Last edited by Hellstormer (2022-04-12 09:21:55)

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,677

Re: Wlan0 interface not showing up

I would spend some quality time reading your Journal concentrating around the time that the device dies.  [ journalctl -b]

Last edited by ewaller (2022-04-12 13:54:46)

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