No wlan0 interface detected

[Reignman]

Hi All, I have been using Retropie for over 2 years now and I'm having a problem that keeps returning. I have spent houres and houres trying to fix this but limited en no permanent results. I was hoping someone can help me through this.

I have a Raspberry Pi Model 3. (All info is below)

I used to have Jessie installed and my wifi connection would suddenly fail. I would get the massage : No wlan0 interface detected. After trying numerous fixes on the net I would get it to work again but now it's down constantly after I upgrade to Retropie 4.6 (buster)

Tried a fresh install with a new sd card but still I get the same error. You would think It's a hardware issue but when I got this error earlier I got to fix it with a code through the console :
sudo wpa_supplicant -Dwext -iwlan0 -c/etc/wpa_supplicant/wpa_supplicant.conf
sudo systemctl enable wpa_supplicant.service

But this doens't work anymore.

If I try to connect to the wifi in the config menu I get : No wlan0 interface detected.
I tried setting the country but then again I get the same message.

I am currently on the latest release (buster) with Retropie 4.6.

Pi Model or other hardware: (B, B+, 2 B, 3, X86 PC etc..) : Raspberry Pi 3
Power Supply used: gooboy Model no. 71889 output : 5V - 2.5A
RetroPie Version Used (eg 3.6, 3.8.1, 4.1 - do not write latest): 4.6
Built From: (Pre made SD Image on RetroPie website : retropie-buster-4.6-rpi2_rpi3.img
USB Devices connected: USB keyboard, USB drive (ROMS and art)
Controller used: 2x zero delay usb joystick
Error messages received: No wlan0 interface detected
Verbose log (if relevant): ?
Guide used: (Mention if you followed a guide)
File: (File with issue - with FULL path)
Emulator: (Name of emulator - if applicable)
Attachment of config files: (PLEASE USE PASTEBIN.COM FOR LARGE LOGS)
How to replicate the problem: Trying to connect to a wifi network

I can't paste any logs cause my Pi will not connect to my network anymore so. If someone can explain how to, that would be nice.

[mitu]

Did you set your the Country first ? I think it's required since Raspbian Stretch in order to use the Wi Fi.

[Reignman]

If I try to set Country I get : No wireless interface found 🤔

[markyh444]

@Reignman sounds like a hardware issue. Do you get the same behaviour off a standard Raspbian install?

[Reignman]

@markyh444 Yes also of a fresh install. So that's what I'm afraid for that's it's hardware related. Although I don't understand why this was in the past also but back then I got it working again temporary ...

[mitu]

Can you run dmesg, taken after a cold boot, and post it on pastebin.com ?

[Reignman]

@mitu Yes but how do I save and export this info without network on my pi?

[mitu]

@Reignman Save it on the boot partition.

dmesg | sudo tee  /boot/dmesg.txt

Then take the sdcard out of the Pi and read the file from your PC.

[Reignman]

@mitu thank you, I'm gonna try this tomorrow morning. I'm not home now.

Posting log asap. 😁👌

[undrwater]

I'm running into the same issue. Here's a dmesg from fresh boot.

dmesg

[BuZz]

@undrwater Please don't hijack a topic - start a new topic. You're running a Raspberry Pi2 - which doesn't have built in wifi btw. So you need a dongle.

[undrwater]

@BuZz

Wow. Talk about assumptions. I would have sworn I was using the Pi 3. Thanks for the heads up!

[Reignman]

This post is deleted!

[Reignman]

@mitu Here is my dmesg

Dmesg

[mitu]

Doesn't seem to be anything Wi-Fi related (Bluetooth included). Maybe they're blocked ? Can you run

sudo rfkill list all

and post the output ? Does it detect any Wifi interfaces ?
Did you disable the Wifi/Bt via config.txt on your Pi ?

[Reignman]

@mitu I get no output from chat command. Havent changed anything in config.txt

With iwconfig I get :

lo no wireless extensions.

Enxb827ebb5a2ad no wireless extensions.

[Aztechomie64]

@undrwater Something is going on i need some type of help anyone.
I di all the steps to install retropie and then i downloaded all roms to usb plugged it in the raspberry pi 3 and when i go to restart emulation it tells me that “if this is the first time rebooting then i got something wrong?
I deleted all and re installed all same steps same outcome.
Right now at this moment i tried to change some audio it let me but as it went back to the main screen it froze ?
Any answers thank y

[mitu]

@Aztechomie64 Please open a separate topic and add the info asked in https://retropie.org.uk/forum/topic/3/read-this-first.

[Reignman]

@mitu Any ideas what I could do? Could it ba a hardware failure?

[mitu]

It's most likely a hardware failure.
Just to be sure there's nothing disabled, post your config.txt.