[mythtv-users] Semi-OT: Help with modeline generation

Jim Reith reith at racores.com
Wed Jun 29 18:54:27 UTC 2005

At 08:56 AM 6/29/2005, you wrote:
>I recently purchased a Samsung HLR4667W widescreen DLP television and
>have been trying to get my MythTV box to work nicely with it via its
>VGA input. Since the monitor's native resolution is 1280x720, I used
>the following modeline to generate a decent picture:
>1280x720 74.863 1280 1360 1488 1664 720 723 730 750
>While that displays a very nice picture, it is overscanned both
>horizontally and vertically. Using Powerstrip, I was able to eliminate
>most of the horizontal overscan after generating this mode:
>1280x720 79.159 1280 1424 1552 1760 720 723 730 750
>Now, I need to create a "resolution within a resolution" to eliminate
>most of the vertical overscan, but I'm at a loss to do so. Following
>the instructions on the AVS Fourm link found in Jarod's HDTV FAQ,
>every mode that I try to create results in my display saying that the
>mode is not supported. I've determined that a 1228x690 mode should fit
>the display almost perfectly, but can't get it to work. Any of the
>modeline experts on this list care to give me a hand?

back when I was doing graphics devices for X I used to use XVtune to play
with the modelines. is this available on your distribution?

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