Some Questions about the Display System

Hello,

I have some questions about the Display System:

1. What is the difference of "video=omapfb.mode=dvi:1280x768MR-24@60"
and
      "omapfb.video_mode=1280x768MR-24@60"
My Problem is that the second one works with my LCD-TV but the first
not!

2. I have looked in the EDID Information of my LCD-TV and
have converted my Timing to the framebuffer-Format -->[1] then i added
this information to
modedb.c.

{
        /* 1280x768p at 60Hz */
        "720p", 60, 1280, 786, 12478, 192, 64, 20, 3, 128, 7,
        0, FB_VMODE_NONINTERLACED
    },

and tried to start with this option: "video=omapfb.mode=dvi:720p"

Is that right? Because it not working!

I have also read [2] to understand the timings but nothing worked!

I would be good to solve this 720p Problem with the HD-TVs and this
confusion about the video mode parameters!

[1]
http://git.kernel.org/?p=linux/kernel/git/tmlind/linux-omap-2.6.git;a=blob;f=Documentation/fb/framebuffer.txt;h=b3e3a035683993edc8391cefd11ea3ef6be9eb08;hb=HEAD

[2] http://groups.google.com/group/beagleboard/browse_thread/thread/155dc4da296be2e9