Raspberry PI 4B Wifi is not working

Installing and Using OpenWrt
1

Hi,

I have a Raspberry PI 4B, and I am able to set up the wired network with an USB adapter for another Ethernet port. I could log in and install LuCI. However, when I start the wireless, I cannot see my wireless or wifi. I tried modified various settings and watching videos online. https://www.youtube.com/watch?v=_pBf2hGqXL8
Using this config file:
https://gist.github.com/odevodyssey/bd16cd8eb4707ef14c4d59d6fb15a406#file-wireless

I cannot see wifi from other devices. However, if I download an image from Github, I could start wifi and connect to Raspberry pi through wifi. My question is how to fix wifi?

Thanks,

2

what image are you downloading that works?

Oh, and the device you're trying to connect to the pi with, does it support 5GHz?

3

Hi Jaromanda,

I am not sure if my device supports 5 GHz. I tried varying the Frequency and etc, but it does not work.

Here is the link that works:

For some reason, this image works for a few hours fine, and it stops working every few hours. The Wifi from this image works fine with the Raspberry PI that I have.

Thanks

4

Try installing the official OpenWrt 21.02.1 image. It should work properly once you follow the instructions to enable wifi on the device:

5

it says released this 12 Aug 2020 - yet that works, and .... something you got elsewhere does not?

You state that:

So, what image are you using that

a) doesn't work
b) doesn't have luci pre-installed?

Also, the fact that the video says "use command line and replace the whole wireless config" suggests that whoever made that video is a complete idiot that doesn't know a thing about OpenWRT

6

Hi,

I initially download my images here:
https://downloads.openwrt.org/snapshots/targets/bcm27xx/bcm2711/

Now, I download my images here:
https://downloads.openwrt.org/releases/21.02.1/targets/bcm27xx/bcm2711/

The dhcp server and LuCI work. But the wifi does not work.

Oh, I played with this a bit further. Setting this to N and 5 GHz work, and AC auto does not work. N and 2.4 GHz does not work.

Not sure about this:
https://downloads.openwrt.org/snapshots/targets/bcm27xx/bcm2711/
This, I think I tried also, and wifi probably did not work. I did not remember exactly.

Thanks,

7

Hi, did you resolve your issue? I am having similar problem with pi 400