On Sat, 2005-01-22 at 16:04, Paul Miller wrote: > I have a Sony KV-27HS420 HDTV and an ATI Radeon 9700 AIW Pro, and I'm > trying to configure X such that my display works with the DVI/HDMI > interface. I used read-edid | parse-edid to obtain the modeline > settings below. Mode 720x480 works well so long I don't switch to > different inputs on the TV. If I do, the display sometimes becomes > partially corrupted. Mode 1920x540 does not work and it appears that > the TV wants to horizontally squash the image, even though it is > solid black. I'm not sure why the EDID information says "1920x540" > instead of "1920x1080". I haven't been able to find any 1080i > modelines that work either. The display's native resolution is > 1080i.
Correct me if I'm wrong, but my impression is that EDID information is based on a spec that assumes a multisync monitor. When connecting to a TV, it may be impossible for the TV to correctly specify the legal modes, as they are separate discrete modes, not a continuous range of modes. http://en.wikipedia.org/wiki/EDID Yup, if I'm reading that correctly, EDID can't provide a list of video modes. --PC
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