Wifi interface no longer shows

General system Kernel, boot, graphics & hardware
1

Hi all

When I booted up this morning, my wifi interface no longer was available. Interestingly, when I plug in my Ralink dongle it works just fine (it’s just slower as the dongle is ancient).

I have both lts and non-lts kernel installed. Lts kernel is 15.15.47-1-lts, which I use most of the time. Can’t recall the version of the non-lts one.

lspci -k shows the network card just fine:

Network controller: Intel Corporation Comet Lake PCH-LP CNVi WiFi
        Subsystem: Intel Corporation Wi-Fi 6 AX201 160MHz
        Kernel driver in use: iwlwifi
        Kernel modules: iwlwifi

Output of inxi -a:

Network:
  Device-1: Intel Comet Lake PCH-LP CNVi WiFi driver: iwlwifi v: kernel
    bus-ID: 00:14.3 chip-ID: 8086:02f0 class-ID: 0280
  Device-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
    vendor: Lenovo driver: r8169 v: kernel pcie: gen: 1 speed: 2.5 GT/s
    lanes: 1 port: 2000 bus-ID: 04:00.0 chip-ID: 10ec:8168 class-ID: 020

iw dev however shows no output, and when I try to set wlan0 up I get the message: "Cannot find device “wlan0"”

Ip link similarly shows no wlan0.

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp4s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000
    link/ether 00:2b:67:64:21:e3 brd ff:ff:ff:ff:ff:ff

rfkill only shows bluetooth.

Re: Network manager status:

systemctl status NetworkManager.service

● NetworkManager.service - Network Manager
     Loaded: loaded (/usr/lib/systemd/system/NetworkManager.service; enabled; vendor preset: disabled)
    Drop-In: /usr/lib/systemd/system/NetworkManager.service.d
             └─NetworkManager-ovs.conf
     Active: active (running) since Fri 2022-06-17 07:59:49 IST; 19min ago
       Docs: man:NetworkManager(8)
   Main PID: 407 (NetworkManager)
      Tasks: 3 (limit: 9131)
     Memory: 11.9M
        CPU: 223ms
     CGroup: /system.slice/NetworkManager.service
             └─407 /usr/bin/NetworkManager --no-daemon

Jun 17 07:59:56 [redacted] NetworkManager[407]: <info>  [1655449196.8662] manager: NetworkManager state is now CONNECTED_SITE
Jun 17 07:59:56 [redacted] NetworkManager[407]: <info>  [1655449196.8663] policy: set 'Wired connection 1' (enp4s0) as default for IPv4 routing and>
Jun 17 07:59:56 [redacted] NetworkManager[407]: <info>  [1655449196.8665] policy: set 'Wired connection 1' (enp4s0) as default for IPv6 routing and>
Jun 17 07:59:56 [redacted]NetworkManager[407]: <info>  [1655449196.8711] device (enp4s0): Activation: successful, device activated.
Jun 17 07:59:56 [redacted] NetworkManager[407]: <info>  [1655449196.8717] manager: NetworkManager state is now CONNECTED_GLOBAL
Jun 17 08:00:18 [redacted] NetworkManager[407]: <info>  [1655449218.3961] agent-manager: agent[a1fa0029a94f0883,:1.40/org.kde.plasma.networkmanagem>
Jun 17 08:00:24 [redacted] NetworkManager[407]: <info>  [1655449224.4251] audit: op="statistics" interface="enp4s0" ifindex=2 args="2000" pid=730 u>
Jun 17 08:00:26 [redacted]NetworkManager[407]: <info>  [1655449226.8449] audit: op="statistics" interface="enp4s0" ifindex=2 args="0" pid=730 uid=>
Jun 17 08:00:28 [redacted] NetworkManager[407]: <info>  [1655449228.4002] audit: op="statistics" interface="enp4s0" ifindex=2 args="2000" pid=730 u>
Jun 17 08:00:37 [redacted] NetworkManager[407]: <info>  [1655449237.6778] audit: op="statistics" interface="enp4s0" ifindex=2 args="0" pid=730 uid=>
...skipping...

This is quite frustrating because my wifi dongle is slow and the ethernet cable is pathetically short. Just goes to show how dependent I am on wifi “just working”. :smiling_face_with_tear:

2

I had the same problem, or it seem so.

I had to use the ethernet cable to activate again my networks. Some downgrade and update resolved it.

1 Like
3

Hmm… I tried downgrading recent updates including systemd and iwd, but it did not work. A lot of packages were installed over the past week, so determining which one caused the issue is pretty hard.

4

16554542964548078525186638933818
So I downgraded and reinstalled a few packages and the wifi began working again, except my mouse kept freezing and the system became totally unresponsive. so I did a hard reboot. Then this.

5

Are you able to give us your /var/log/pacman.log ?

6

Not able to access it due to kernel panic.

7

You will need to boot off the install media and chroot in and run the update again - at least that will get the machine working (but not the WIFI!).

Am at work so cannot point you to the instructions, but somebody will chime in.

1 Like
8

https://discovery.endeavouros.com/system-rescue/arch-chroot-for-efi-uefi-systems/2021/03/

1 Like
9

Having (incorrectly) assumed that my system was bricked, I livebooted, backed the home directory and did a fresh install. This install process was tedious due to issues with the arch keyring included in the .iso.

Sadly, my wifi interface is down yet again. I would love to know what to do to actually fix this, since downgrading packages seemed to break the system before.

10

Not sure what you mean with the arch keyring?

11

That used to be an issue for some weeks into the Apollo-release, remember?

12

I don’t know why it is an issue now though as there is a hot fix that automatically should fix the issue on the install.

Edit: I’m assuming the OP means they just re-installed it? Or they did this prior to the hot fix?

13

So the ISO did receive an update, or has the “backend” been updated?

14

It’s right on the EndeavourOS website regarding the keyring.

https://endeavouros.com/news/apollo-iso-bug-is-fixed-for-most-users-and-also-a-workaround-for-those-who-need-it/

15

So now you know?

16

I don’t think you understand what i meant. I wasn’t sure what his tedious process with respect to the Arch keyring was because the fix was out for it a long time ago.

Edit: So now you know. :laughing:

17

It seems a recurring thing, or?!

18

I can only suggest that you update the mirrors first before installing. If you are in the US i use a larger number of mirrors because some of them are crap. I use 19 or 21 US plus the few Canadian that there are.

1 Like
19

That’s just information for those in need of it. I don’t usually have any issues with installing. Mind you i have very fast internet. I don’t usually run into many mirror problems but i do know that some US mirrors can be problematic so even though the install process updates the mirrors it’s a good practice if you have an issue to update the mirrors before an install. Sometimes if you have issues depending on the Country it’s can be helpful to select other mirrors also from another country such as US. Sometimes even the Canadian mirrors can give a problem. Occasionally!

20

Must be the wide, open, and sometimes squarely uninhabited spaces in the north of Umrika. In such densely populated areas as Europe, you easily switch between UK, France, Germany, Denmark, and The Netherlands…

:grimacing: