Shown in the following EDID Options example, the If EDID Device (edid_avail) and If Not EDID Device (edid_not_avail) options in CED are found on the CRT, sDVO, LVDS, and TV Out configuration pages.
These options control the available timings for any display. Use the edid_avail parameter when EDID information is read from the display. If the driver cannot read EDID information from the display or if the edid parameter is set to “0” (disable), then use the settings of the edid_not_avail parameter.
The default behavior of edid_avail is to use the driver’s built-in standard timings and EDID block and filter modes. The default for edid_not_avail uses the driver’s built-in standard timings. Please see Table 21. Parameter Configuration Format in Configuration Options for more information on these parameters.
The Intel® EMGD supports three different types of EDID display modes:
1. Built-in display modes. These modes are hard-coded in the Intel® EMGD. These modes can be filtered based on the EDID block.
2. EDID-DTDs: These are Detailed Timing Descriptors read from the EDID block. EDID can have these DTDs along with other information about the display.
3. User-specified DTDs defined in CED. See User-Specified DTDs.
The Advanced EDID Configuration supports different possible combinations of display modes when an EDID display is present along with user-specified DTDs.
• Sample Advanced EDID Configurations