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Date:      Thu, 05 Nov 2009 08:13:22 +0100
From:      Torfinn Ingolfsen <torfinn.ingolfsen@broadpark.no>
To:        freebsd-multimedia@freebsd.org
Subject:   Re: x11/nvidia-driver cannot obtain EDID under 8.0-BETA3/i386
Message-ID:  <20091105081322.82cd27f7.torfinn.ingolfsen@broadpark.no>
In-Reply-To: <4AF26B7F.2020401@rdtc.ru>
References:  <20090828135029.GA21544@svzserv.kemerovo.su> <200909021559.31093.fbsd.multimedia@rachie.is-a-geek.net> <4AF26B7F.2020401@rdtc.ru>

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On Thu, 05 Nov 2009 13:06:55 +0700
Eugene Grosbein <egrosbein@rdtc.ru> wrote:

> Just for archives: Samsung 959NF has two inputs, D-Sub and BNC.
> For D-Sub, it presents EDID and it does not for BNC that I used.
> So, the problem was with monitor connection, not with FreeBSD nor
> nvidia-driver.

Figures. EDID[1] uses DDC2B[2] which is an I2C bus, implemented on two
specific pins of the VGA[3] connector, or the DVI[4] connector.

References:
1) http://en.wikipedia.org/wiki/EDID
2) http://en.wikipedia.org/wiki/Display_Data_Channel#DDC2B
3) http://en.wikipedia.org/wiki/VGA_connector
4) http://en.wikipedia.org/wiki/Digital_Visual_Interface

HTH
-- 
Regards,
Torfinn Ingolfsen




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