I think we can say with some confidence that there is something wrong with
the UART chip on your new computer. Can you take it back?

Alternatively, as Vince says, a serial-to-usb converter. They seem to be
more reliable these days.

-tk

On Thu, Nov 26, 2020 at 8:47 PM kiwigander <[email protected]> wrote:

> Ta.  The prevalent RS232<=>USB chipset around these parts seems to be an
> FTDI.  I'll look around.
>
> On Friday, November 27, 2020 at 4:19:32 PM UTC+13 vince wrote:
>
>> I was hoping to avoid USB<=>RS232 converters, as I understood they were
>>> problematic (in the past) and would add another thing-to-go-wrong.  I have
>>> one other old device to monitor and it too has only an RS232 interface.
>>> Thought I'd be clever and get a low power box with two RS232 ports.
>>>
>>
>> FWIW, i've been running a VP2 with serial datalogger and a serial2usb
>> dongle for something like 10 years now.   I started with a Shuttle mini-pc
>> that had serial ports and switched to a little arm box that just has USB.
>> Never had an issue with the serial2usb from day one.  Works great.
>>
>> You basically just want to make sure you get the right chipset in the
>> adaptor.  Anything with the PL2303 definitely works.  Both mine have that
>> chipset, and they were picked up years apart from different suppliers, so
>> they used to be pretty much what you always got.  I haven't looked in years
>> to know if that's still the case.
>>
>> I'm running on a Seagate Dockstar (a 128MB RAM version of the original
>> PogoPlug) with a Seagate laptop drive plugged in, and you can see the
>> serial adaptor available in the lsusb output below.
>>
>> root@debian:~# lsusb
>> Bus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB
>> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
>> Bus 001 Device 003: ID 0bc2:2120 Seagate RSS LLC
>> Bus 001 Device 004: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial
>> Port
>>
>>
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