serial port loses power

[unixkid]

Is it a Sun quirk some Suns have, of dropping to the OK prompt if a device connected on a serial port loses power. Does anyone know which platforms of HW have these issues?

 

[SamBones]

It's not a quirk. It may just be a setting not how you want it. If you are using a terminal at the serial port as your console, it can drop to the [tt]ok>[/tt] prompt with a certain keystroke. Doing a Stop-A or a BREAK on a serial keyboard will drop to the [tt]ok>[/tt] prompt. What might be happening is that your terminal on the serial port is sending a BREAK when you are powering it down.

You can disable this action by going into [tt]/etc/default/kbd[/tt] and putting in a line that says...
[tt]
KEYBOARD_ABORT=disable
[/tt]
This should turn of keyboard abort. See [tt]man kbd[/tt] for more info.

Also, some Sun servers have a key switch with a Secure position. Putting the key there will keep it from dropping to the [tt]ok>[/tt] prompt when a keyboard abort sequence is hit.

Hope this helps.

 

[unixkid]

We don;t see this when the server is powering down. When pysically disconnecting the port is sending a BREAK that can only be fixed by typing "go". I notice this on smaller hardware types sparc20-E450's...

Anyone expericne this or have an explaination ?

 

[hornetbloke]

It's like SamBones said, when you disconnect the port for whatever reason the server drops to ok prompt.
Uncomment the line in /etc/default/kbd as he said and then type "kbd -i"
You shouldn't have the problem any more.