Browse Prior Art Database

Remote Network Reset of Video Parameters to Known Good State Using a Service Processor

IP.com Disclosure Number: IPCOM000122830D
Original Publication Date: 1998-Jan-01
Included in the Prior Art Database: 2005-Apr-04
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Cromer, D: AUTHOR [+3]

Abstract

Today, it is possible to set your video parameters to a certain state where your display will not operate. If done, it is very difficult to reset the display because it is not possible to see the setup screens. An example of this is setting the refresh rate at a higher level than the display can handle. In that example, the display will never sync and you will not be able to see the screens.

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This is the abbreviated version, containing approximately 84% of the total text.

Remote Network Reset of Video Parameters to Known Good State Using
a Service Processor

      Today, it is possible to set your video parameters to a certain
state where your display will not operate.  If done, it is very
difficult to reset the display because it is not possible to see the
setup screens.  An example of this is setting the refresh rate at a
higher level than the display can handle.  In that example, the
display will never sync and you will not be able to see the screens.

      This invention allows a network administrator to send a
Ethernet packet to the system and have the service processor send a
signal to the video subsystem to reset the video parameters to a
known good state (example 1024x768 x 8 bit color at a 75 hz rate).
Once the  screen is correct then the user can reset the video
parameters to the desired requirements.

      New Client systems a service processor which is capable of
receiving packets from the Network.  One packet will be predefined as
reset video to known good state.  When this packet is determined the
service processor will send a command over the SMD bus (A 2 pin
industry standard serial interface which allows the service processor
to talk to  the different subsystems on the motherboard) to the video
subsystem. The  video subsystem will decode this command and reset
its registers to known good state.  This invention will be
incorporated into future 1998 desktop systems.  The service processor
is already unde...