One INF file can specify multiple display configurations. A ConfigId parameter uniquely identifies each configuration.
The driver reads the PanelId from the System BIOS during initialization and uses the configuration whose ConfigId matches the PanelId. If the System BIOS does not set a valid PanelId (for example, panelId = 0), the driver reads a configuration using ConfigId = 1. (A ConfigId value of 0 is invalid.)
Note: When setting up a multiple display configuration to be used with the PanelID, do not set a default configuration. To have no default configuration, select None from the Default Configuration drop-down menu on the EMGD Package Page. See Creating a New Package for details.
You can override the default behavior by specifying a ConfigId parameter as follows:
HKR,, ConfigId, %REG_DWORD%, %DEFAULT_CONFIG_ID%
In this case, the driver ignores the PanelId returned by the System BIOS. Instead, the Intel® Embedded Media and Graphics Driver uses the configuration information using the specified ConfigId.
The PcfVersion key is generated automatically by the CED utility and is placed in the [iegd_SoftwareDeviceSettings] section of the .inf file. The default iegd.inf file already contains the PcfVersion key. Please see Example INF File to view a sample .inf file.