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EDID from multiple displays using ioctl(WSDISPLAYIO_GET_EDID)

To: tech-userlevel%NetBSD.org@localhost
Subject: EDID from multiple displays using ioctl(WSDISPLAYIO_GET_EDID)
From: RVP <rvp%SDF.ORG@localhost>
Date: Wed, 23 Dec 2020 05:57:55 +0000 (UTC)

Is there a way to retrieve EDID data from displays other than
the default one using ioctl(WSDISPLAYIO_GET_EDID) ?

On my Asus X202E laptop with 3 physical outputs (LVDS, VGA, HDMI)
the ioctl gets the EDID only of the LVDS panel. This is for
situations where X is not running/can't run and xrandr unavailable.

-RVP

Follow-Ups:
- Re: EDID from multiple displays using ioctl(WSDISPLAYIO_GET_EDID)
  - From: Michael van Elst

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