From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <20000820001418.14772.qmail@g.bio.cse.psu.edu>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] Monitors and VGADB 
In-Reply-To: Message from "Russ Cox" <rsc@plan9.bell-labs.com> 
   of "Sat, 19 Aug 2000 19:28:40 EDT." <200008192328.TAA04560@cse.psu.edu> 
Date: Sat, 19 Aug 2000 20:14:18 -0400
From: Scott Schwartz <schwartz@bio.cse.psu.edu>
Topicbox-Message-UUID: fdb2a420-eac8-11e9-9e20-41e7f4b1d025

| does anyone know
| how it did that?  i thought the video output
| cable was one-way.

No, modern monitors use "DDC" to communicate their vital data back to
a DDC compatable video card.

There's a linux program that supposedly exercises this, but I didn't
have much luck with a Nokia 447x talking to a #9 771.

http://altern.org/vii/programs/linux/read-edid/