Fixing Full-HD VGA support for the Epson EH-TW5200 Projector

If you happen to own an Epson EH-TW5200 projector, you might have experienced problems setting Full-HD (1920×1080) resolution using a VGA connection under linux. When I set the resolution to Full-HD, the whole screen would stay completely black. This is just a quick fix for the other 4 people that might have this problem.

The difference between the original modeline and the new one is the vertical refresh rate: The projector proposed 60.02 Hz via EDID, and the new modeline is just a tad slower, using 59.94 Hz. I was connecting a ThinkPad T60 to the projector, so the problem might also be the RAMDAC of the laptop, something about blank phases, who knows.

 

Software keystoning with mplayer

Some years ago I built a projector, using a overhead prjector and a TFT, as most of you readers know them already. But I never did overcome the problem of keystoning. I know that you can tilt one of the lenses, but with most DIY builds this can be a quite frustrating procedure.

So after many years of looking for a solution thats easy to use, especially because I don’t want that ugly projector to keep standing in the middle of my living room and I always move it to one corner after using it. That means that i have to do the keystone calibration each and everytime I want to use it.

The solution: mplayer already has a perspective correction video filter feature included

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