KOH_Gen_port_config

Per Port Customization — General Port Configuration

This section describes port-specific general configuration options. These options are located under [HKEY_LOCAL_MACHINE\Drivers\Display\Intel\ALL\1\Port\1\General]

• Edid

This boolean key enables (set to 1) or disables (set to 0) the EdidAvail and EdidNotAvail keys.

• EdidAvail and EdidNotAvail

These two 16-bit keys control the available timings for the display. If an EDID is successfully read from the display device, then Intel® EMGD uses the EdidAvail flag to determine what timings are available. Otherwise, if an EDID cannot be read, then Intel® EMGD uses the EdidNotAvail key.

Bit #

Value (0 or 1)

0

Disable/Enable driver built-in timings

1

Disable/Enable EDID timings. (Only valid for the EdidAvail flag)

2

Disable/Enable DTD

3-15

Reserved

• CenterOff

If the selected frame buffer size is smaller than what the Intel® EMGD hardware can support, by default the frame buffer will be centered with a black border around it. To explicitly turn off this feature, the user may set the “CenterOff” key to “1”.

• Rotation and Flip

Intel® EMGD supports desktop rotation through the “Rotation” key in Single and Clone mode. Rotation is not supported in Vertical Extended Mode.

The “Rotation” key can be set to one of the four following values.

Degrees

Key Value

0

0 (default)

90

5A

180

B4

270

10E

So, “Rotation”=dword:5A will rotate the frame buffer 90 degrees.

The “Flip” key flips the desktop horizontally, displaying a mirror image. “Flip” is a boolean value: 1 to enable, 0 to disable.

• Scale

Intel® EMGD can scale the desktop to the output panel using the panel’s DTD or EDID (in that order). Scaling (attribute ID “18”) is a boolean value, “18”=dword:1 to enable, 0 to disable.



*Other names and brands may be claimed as the property of others.
Revised April 2013