how to read EDID/xrandr

Alex Deucher alexdeucher at
Mon Oct 12 06:49:14 PDT 2009

On Mon, Oct 12, 2009 at 9:05 AM, Éric Piel <E.A.B.Piel at> wrote:
> Op 11-10-09 03:35, Ondrej Balaz schreef:
>> Hi,
>> is it possible to get edid info (especialy vendor and product id) for
>> each of xrandr screens through X11 api?
>> I'm creating utility to remember various devices connected to VGA output
>> of my laptop (their mode/resolution, position etc.). AFAIK there is no
>> better identificator than vendor+product_id pair. I can see both
>> informations for various devices in my Xorg.0.log but I don't know how
>> to "reaccess" them (if it's possible).
> Sounds like a neat utility program. Would you mind posting an
> announcement when it's working?
> Here, with the intel driver, I can see the edid of each screen in the
> EDID_DATA property by doing:
> xrandr --verbose

All randr 1.2 drivers expose the edid this way.


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