Hi Peter,

On Mon, May 29, 2017 at 4:35 PM, Peter Lawler <[email protected]> wrote:
> Hi!
> Just wondering if something's changed recently in the way the Serial Debug
> Header operates?

There shouldn't be anything that changed that. I use the hardware
serial debug interface on a daily basis..

>
> I'm asking because I've grabbed the recent release, updated to stretch, and
> OK yes sure added a couple of what I'd call 'basic' things in - nothing too
> major - but now I don't get access via the Serial Debug Header. All output
> looks normal on boot and I can't see anything in particular standing out in
> the boot log, either.
>
> It may well be that I'm missing sufficient amounts of coffee. But any
> thoughts/comments appreciated at this stage.

systemd should trigger on:

debug: [console=ttyO0,115200n8 root=/dev/mmcblk0p1 ro rootfstype=ext4
rootwait coherent_pool=1M net.ifnames=0 quiet cape_universal=enable]
...

and setup a serial login console...

do you have this udev rule installed?

https://github.com/rcn-ee/repos/blob/master/bb-customizations/suite/jessie/debian/60-omap-tty.rules

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

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