console no responding to key in.

[Chuck Swiger]

On Apr 15, 2010, at 1:26 PM, Jessie Xu wrote:
> I must fix the problem since I need console login with root. Any insight
> on this? thanks.  Our machines are Dell PowerEdge 2650 (2U rack mountable) , come with
> Video port, PS2 keyboard/Mouse ports, and two Serial ports. -- I also
> tried the serial ports for console access, no lucky.

PS/2 isn't a hot-pluggable interface.  On older hardware, you can blow a fuse on the motherboard by trying to do so while the machine is on, although newer equipment uses a polyfuse (aka PPTC or resettable fuse) to avoid permanent damage.

If there was no keyboard there initially, then the hardware may never attempt to use one added later, short of a power-cycle.  In such cases, trying a USB keyboard instead might work better.

Regards,
-- 
-Chuck