[TriEmbed] Old Pi(s) with USB WiFi stopped working

[Huan Truong]

The prime suspect here is the Pi's USB port or hub chip is not seeing
the dongles since both of your devices failed to work.

My go-to method to see if the USB port is working is to watch dmesg:

$ sudo dmesg -w  

Then plug whatever you need to observe in the port. If you see nothing,
there goes your connection not working for whatever reason.

If you have openwrt, you could watch the syslog on openwrt to see if the
device is connecting to your router:

# logread -f

I found the "follow" or "watch" option of any logging facility to be
extremely useful as a first-line defense mechanism to debug anything not
showing up.



On Aug 16 2024, at 1:00 pm, Dwight Morgan via TriEmbed
<triembed at triembed.org> wrote:

> I just noticed my old pi  with USB WiFi I had running for years and
> another spare not working -  I tried both but don't seem to be
> connecting when I try to see them  on my router  "attached devices" or
> ssh in with a pi 4.
> Hoping for helpful hint before I dig to China.
>  
> Thanks,
> Dwight
> _______________________________________________
>  
> Triangle, NC Embedded Interest Group mailing list
>  
>  
> To post message: TriEmbed at triembed.org
>  
> List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org
>  
> TriEmbed web site: https://TriEmbed.org
>  
> To unsubscribe, click link and send a blank message: mailto:unsubscribe-TriEmbed at bitser.net?subject=unsubscribe
>  
> Searchable email archive available at
> https://www.mail-archive.com/triembed@triembed.org/