Arch Linux

notverysmart

Member

Registered: 2019-03-30

Posts: 10

[SOLVED]Wifi not showing up in ip link, not even on installation media

I think I've screwed up my installation quite a bit. When I run "startx", I get

(EE)
     Fatal server error:
                          (EE) no screens found(EE)

Running "ip link" gives me

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

Running "rfkill list" gives me

rfkill: cannot open /dev/rfkill: No such file or directory
rfkill: cannot read /dev/rfkill: Bad file descriptor

Also, when I plug in a flash drive it doesn't show up when I run "lsblk".

Then I boot from my arch USB, and things still don't work. "ip link" gives me the same result, and "rfkill list" gives

0: ideapad_wlan: Wireless LAN
        Soft blocked: no
        Hard blocked: no
1: hci0: Bluetooth
        Soft blocked: no
        Hard blocked: no
2: ideapad_bluetooth: Bluetooth
        Soft blocked: no
        Hard blocked: no

What in the world is going on?

Last edited by notverysmart (2019-04-13 22:43:46)

jasonwryan

Anarchist

From: .nz

Registered: 2009-05-09

Posts: 30,424

Website

Re: [SOLVED]Wifi not showing up in ip link, not even on installation media

No idea: you have given us zero information about your system, or how you installed it.

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notverysmart

Member

Registered: 2019-03-30

Posts: 10

Re: [SOLVED]Wifi not showing up in ip link, not even on installation media

I'm not sure what information I should put. It's a Lenovo laptopand I installed arch following the instructions on the wiki. The network controller is by Realtek as shown in this output from lspci -k:

3a:00.0 Network controller: Realtek Semiconductor Co., Ltd. TRL8822BE 802.11a/b/g/n/ac WiFi adapter
        Subsystem: Lenovo RTL8822BE 802.11a/b/g/n/ac WiFi adapter

with no kernel drivers in use listed afterward.

Edit: to be clear, I have already installed arch successfully and all of this happened after I rebooted one time. I also know that wifi used to work on my installation media because I used it during my installation.

Last edited by notverysmart (2019-04-12 22:37:28)

loqs

Member

Registered: 2014-03-06

Posts: 17,378

Re: [SOLVED]Wifi not showing up in ip link, not even on installation media

Please copy the output of dmesg from the boot media to a system with network access then post that to a pastebin.
Also what is the VID:PID of the NIC?  (availaible from lspci -n or lspci -nn)

Last edited by loqs (2019-04-12 22:49:50)

notverysmart

Member

Registered: 2019-03-30

Posts: 10

Re: [SOLVED]Wifi not showing up in ip link, not even on installation media

dmesg output: https://pastebin.com/raw/RN99vMbb

VID:PID of the network controller is 10ec:b822

loqs

Member

Registered: 2014-03-06

Posts: 17,378

Re: [SOLVED]Wifi not showing up in ip link, not even on installation media

The r8822be driver that supports 10ec:b822 was added in linux 4.14
https://github.com/torvalds/linux/commi … 8b007fR436
Unless some other driver supported it in 4.7 then I would not expect it to work.

seth

Member

Registered: 2012-09-03

Posts: 51,319

Re: [SOLVED]Wifi not showing up in ip link, not even on installation media

As for the installed system, I bet your right arm that "uname -r" and "pacman -Qs linux" will reveal the installed kernel to differ from the running one, the common cause is that you forgot to mount the boot partition before the update(s)

Semi-related: you seem to have installed Arch less than 2 weeks ago, did you really use a 3 year old iso??

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notverysmart

Member

Registered: 2019-03-30

Posts: 10

Re: [SOLVED]Wifi not showing up in ip link, not even on installation media

I used a fresh ISO to install arch 2 weeks ago but it seems that the flash drive I was using for maintenance had arch installed on it 3 years ago. And I noticed just before I read your post that "uname -r" was giving the incorrect output. I just ran "pacman -S linux" from the installation media WITH /BOOT MOUNTED and all is fixed. Thank you all!