Re: VESA, EDID & flat panels
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: 2005-10-10 05:53:41
On Tue, 2005-10-04 at 07:35 -0500, Richard Smith wrote:
quoted
So I wonder how widespread really is that EEDID stuff... I'm afraid the reason a lot of monitors come with a windows install CD is that they do _not_ provide those infos via EDID, but windows has a database with per-monitor infos (as Apple actually has in OS X) and we should probably do something similar. (but not in the kernel)Our experience agrees with you that the EEDID stuff is not well used. We make some LCD driver products and I'm pretty sure we didn't include the EEDID info. I gave the specs a quick look and I don't see anything in (thats obvious) there that would allow you to see if the panel is 666 or 888. The specs are somewhat less than clear in several cases so I'll be happy to review any sections closer if you think one might be a possibility.
Look at the EDID EXTENSIONS spec. Extension 0x40 contains the panel component bit definition iirc. I found so far only one monitor that implemented that extended block (the Apple 23" Cinema HD display) but the content seem to be junk =P Ben. ------------------------------------------------------- This SF.Net email is sponsored by: Power Architecture Resource Center: Free content, downloads, discussions, and more. http://solutions.newsforge.com/ibmarch.tmpl