Debug potential kernel panic

[FAUX Manuel]

Hi Ronny,

I guess I've found the reason for the Kernel problem:
https://github.com/raspberrypi/linux/issues/40

In between I've recognized that the watchdog quite reliably resets the Pi in
case of a panic, so I can live with it for now...

BR,
Manuel

-----Original Message-----
From: nard-bounces at arbetsmyra.dyndns.org [mailto:nard-bounces at arbetsmyra.dyndns.org] On Behalf Of Ronny Nilsson
Sent: Donnerstag, 12. November 2015 21:33
To: Nard SDK mailing list
Subject: Re: Debug potential kernel panic

Hi
Are you sure it halts? or is it a reboot? It's a known problem with old Pi 
models that it can happen due to a dip in power when hotpluging some USB 
peripherals. Try adding an externaly powered USB-HUB in between the Pi and 
your serial converter and se if it helps. I think the model B+ is less 
sensitive than model B.

/Ronny



--------------------------------------------------------------
> Hi,
>
> Every time I connect a USB2Serial converter (FTDI 232) my Pi halts. I
> assume a kernel panic is the reason for that, but I have no "evidence" yet,
> neither do I have an idea why that's the case. When booting the Pi with the
> device connected the device gets initialized correctly, only hot-plug seems
> to be a problem.
>
> Long story short: how can I retrieve a kernel dump/log/error message? I
> thought about kdump, but maybe there are simpler ways to do so...
>
> Thanks,
> Manuel