The long list of repeated characters matches reality well enough that I would
suspect a baud mismatch. Try 9600 or 38400 and see what you get.
Can you verify your USB + null modem against any known-good equipment? I use
the keyspan USA-19HS. The serial adapters are finicky, and you certainly could
have a bad one.
ED.
> On 2015, May 11, at 3:35 PM, Matt T. Proud ⚔ <[email protected]> wrote:
>
> Hi all,
>
> I am writing to inquire if you have any tips into the following predicament:
>
> I have a brand-new 6501 that I received from Soekris Europe. I just plugged
> in the null modem cable, added a Prolific PL2303 serial-to-USB adapter,
> connected to the Soekris, setup the terminal (19200; 8-bit data; no parity; 1
> stop-bit; flow-control disabled), and booted the device.
>
> To my dismay, I get garbage over the terminal. I have tried GNU Screen and
> Serial. The PL2303 offers /dev/cu.usbserial and /dev/tty.usbserial, both of
> which I have tried. I have also cycled Screen and Serial through each of the
> supported bauds.
>
> I had been planning on installing OpenBSD to the host (am familiar with the
> 9600 baud reset I need to do) connected to a Mac OS X host (Yosemite), but I
> couldn't even see an intelligible boot screen to reset the the baud in the
> ComBIOS (CTRL+P).
>
> This screenshot will give you an idea of what I am getting at the factory
> connection settings: http://imgur.com/EucjEFn.
>
> I also, FWIW, setup OpenBSD on VirtualBox and used USB passthrough to speak
> to the Soekris. Same garbage: http://imgur.com/iPmKqnY.
>
> Any ideas? What should my next steps be? Is there some sort of a factory
> reset I can do? Could my unit be defective? As I mentioned, I have not been
> able to set any settings with the device. How likely is it that the Prolific
> PL2303 that I am using is faulty?
>
> Kindest regards,
>
> Matt
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