x11/nvidia-driver cannot obtain EDID under 8.0-BETA3/i386

Torfinn Ingolfsen torfinn.ingolfsen at broadpark.no
Thu Nov 5 07:14:00 UTC 2009

On Thu, 05 Nov 2009 13:06:55 +0700
Eugene Grosbein <egrosbein at 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.

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

Torfinn Ingolfsen

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