Re: Dual wifi connections in Bookworm

The Natural Philosopher <tnp@invalid.invalid> wrote:

On 29/11/2024 23:13, bp@www.zefox.net wrote:

The Natural Philosopher <tnp@invalid.invalid> wrote:

On 27/11/2024 20:22, bp@www.zefox.net wrote:

It turns out that letting the system stand for ~4 hrs reproduced some
of the problems. Ping times with both interfaces up eventually rose to
7-10 ms but didn't fail completely. Several of the ssh connections
open from the Pi5 to other hosts either froze or disconnected.

>
That's exactly what I got with an inadequate PSU.
>

 
Since a software update this morning it appears that both interfaces
are co-existing without problems. Re-checking the supply voltage
reveals 5.05 volts, 10 mV below the value seen earlier, measured on
the GPIO header.
 

I got sag when USB was drawing current I think.
 

That's not to claim the problem is resolved: It took about four hours
to misbehave in the previous instance, now it might merely take longer.
 

Fingers crossed.
 

uname -a now reports
Linux raspberrypi 6.6.62+rpt-rpi-2712 #1 SMP PREEMPT Debian 1:6.6.62-1+rpt1 (2024-11-25) aarch64 GNU/Linux
 

Through this morning the networking functioned normally. Then I noticed a
batch of new system updates. After installing and rebooting the trouble
returned, slightly worse. Now the internal wifi simply fails to connect.
The external usb-wifi adapter works as expected. I'm again seeing failures
reported for networkmanager-wait-online, but don't understand what they mean.

Looking through journalctl output, filtered for wlan0, I see a torrent of
output, some of which states:

Nov 30 09:19:00 raspberrypi NetworkManager[852]: <warn>  [1732987140.7820] device (wlan0): Activation: (wifi) association took too long
Nov 30 09:19:00 raspberrypi NetworkManager[852]: <info>  [1732987140.7821] device (wlan0): state change: config -> failed (reason 'no-secrets', sys-iface-state: 'managed')
Nov 30 09:19:00 raspberrypi NetworkManager[852]: <warn>  [1732987140.7826] device (wlan0): Activation: failed for connection 'Wi-Fi connection 1'
Nov 30 09:19:00 raspberrypi NetworkManager[852]: <info>  [1732987140.7828] device (wlan0): state change: failed -> disconnected (reason 'none', sys-iface-state: 'managed')

The mismash of reasons looks inconsistent to me.

The only changes have been disconnecting and reconnecting the usb-wifi
dongle, right now it's connected and the gpio is showing 5.08 volts. I
suspect the small fluctuations seen reflect line voltage drift more
than load.

In any case, I've now navigated successfully from the frying pan back
to the fire 8-)

Thanks for reading,
 
bob prohaska