[rescue] Problem with serial port on Sun

Dan Williams dan_williams at ntlworld.com
Thu Jun 24 07:52:54 CDT 2004

Jay Monkman wrote:

> I just got an E250 to play with, and think I broke it. :-(
> I modified the the serial port settings in NVRAM, and now the system
> hangs. It complains, "bad handshake '' ". I think that's because I did
> "setenv ttya-mode 9600,8,n,1" instead of "setenv ttya-mode 9600,8,n,1,-"
> When it boots, it displays the following:
>      bad handshake ''
>      bad handshake ''
>      Can't open input device.
>      screen not found.
>      Can't open input device.
>      Keyboard not present.  Using ttya for input and output.
> then hangs forever (or at least 10 minutes).
> Sending a break does no good anymore.
>>From reading the documentation, it looks like I could fix this if I
> had a keyboard and display, but I don't. Is there some way to fix this
> with only a serial terminal?
> Thanks.
> [demime 1.01d removed an attachment of type application/pgp-signature]
> _______________________________________________
> rescue list - http://www.sunhelp.org/mailman/listinfo/rescue
I'm sure what you have set it to, but on your terminal software I would 
try setting the parity to all settings (odd, even, mark space and none). 
I would assume you have set it to none. If your software doesn't have 
this try something else of get yourself a keyboard and monitor to change 
it back.


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