[mythtv-users] So close, but not quite - a 1080i modeline for my HDTV CRT
matt at mossholder.com
Sat Jun 3 16:46:06 UTC 2006
On Sat, 2006-06-03 at 12:09 -0400, Sasha Z wrote:
> I used read-edid and parse-edid to get the 1080i modeline for my CRT.
> I turned off most mode validation methods to make sure that it was
> selected as a valid mode. When X starts up, it does indeed select my
> specified mode. It runs in a 1920x540 meta mode. The CRT comes up with
> the mode ok, but it only takes up half the vertical resolution.
It looks to me like the modeline you entered is the 1920x540p modeline,
with "interlaced" tacked on the end. I would look more like this for a
ModeLine "ATSC-1080-60i" 74.25 1920 1960 2016 2200 1080 1082 1088
You'll notice that the last 4 numbers are all around 1080... these all
have to do with the vertical resolution. Yours are all around 540. It
looks like the nVIDIA driver is running 1920x540i inside 1920x1080i
timings. The bounding box size also seems to indicate this.
Have you tried enabling EDID with the following device options:
Option "UseEdidFreqs" "true"
Option "UseEDID" "true"
Option "ModeValidation" "NoVertRefreshCheck"
and then using the autodefined "1920x1080_120i" resolution?
You may need to disable OpenGL vblank for this to work for video. I
know I did.
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