Wireless network connection problems

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Joined: Sun Aug 22, 2021 1:29 pm

Wireless network connection problems

Post by Kougelhopf »

Hello everybody,

I have the following configuration:

- Stereo Pi1 v0.9
- Raspberry Pi Compute Module 3 this eMMC 8Go, BCM2837 Processor and 1GB RAM, version 2018
- Raspbian GNU / Linux 10 (buster) (Not SLP)

I specify that the system works well, the 2 cameras also work well.

I am currently making a remote connection with VNC in ethernet.
Now want to make a remote connection with VNC in WIFI.

I bought an USB wifi dongle with the following reference:

- Realtek Semiconductor Corp. RTL8192EU 802.11b / g / n WLAN Adapter

The wifi is not detected by the Raspberry Pi and that’s my issue

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when i do Ifconfig, only eth0 is detected ...

This problem may seem basic, but I am completely stuck. If anyone has a solution to make the wifi work, thank you in advance.
PS: I apologize in advance if this question has already been asked but I prefer to start from 0

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Re: Wireless network connection problems

Post by Realizator »

Hello Kougelhopf,
At first, we should check if USB ports are working fine. Is your system able to detect USB items connected? For example mouse or keyboard.

You say Eth interface works well - it means our USB/LAN chip works fine and, theoretically, USB ports should work.

As you are using Buster, it should have a lot of WiFi drivers onboard. If your dongle is not recognized, this might be a driver issue. It is better to use the Raspberry Pi-compatible WiFi to avoid these issues, or install the driver for your WiFi chipset.
Eugene a.k.a. Realizator

Posts: 2
Joined: Sun Aug 22, 2021 1:29 pm

Re: Wireless network connection problems

Post by Kougelhopf »

Hello Realizator,

Thank you very much for taking the time to answer me.

Yes, the keyboard and mouse are well detected, I think the USB ports are working.

When I do «$ lsusb » the usb key is recognized:
[email protected]:~ $ lsusb
Bus 001 Device 005: ID 0a5c:21ec Broadcom Corp.
Bus 001 Device 004: ID 0bda:818b Realtek Semiconductor Corp. RTL8192EU 802.11b/g/n WLAN Adapter
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp. SMC9514 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
I'm more focused on a driver problem for this Wifi dongle ... but I can't figure out how... I'm starting to think that this is a serious problem with this cheap wifi dongle
When I perform the « $ iwconfig » command no wifi network is detected.
[email protected]:~ $ iwconfig
lo no wireless extensions.

eth0 no wireless extensions. (I have disconnated the eth connection for this test)

pan1 no wireless extensions.

bnep0 no wireless extensions.
Well, to be completely honest with you, I found another alternative solution using a bluethooth dongle, I can set it up to make a VNC connection. Fortunately. !!

Is there exist a compute module 3 with integrated wifi ?


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