Thanks! I just had to generate some 'baseline' modelines for the
resolutions I was tyring to test (since xvidtune only lets you adjust existing
modelines), but then was able to use 'xvidtune' to get a few different
resolutions working perfectly on my projector:
640x480 720x480 768x483 800x600
All modes are interlaced, but suprisingly enough, at 640x480 and 800x600
there is no percivable flicker. For some reason I was not able to get the
720x480 and 768x483 modes to a high enough refresh rate to eliminate the
interlace flicker, so these resolutions unfortunately produce a noticable
amount of interlace flicker.
Anyways I've set it to 800x600 and am very happy with the results. Nice &
sharp & flicker free! ;-)
One other question... I've setup the modelines for all of the above
resolutions, and in the Monitor section have set the "modes" line to a list of
the resolutions in the order that I want to use them (something like this:
Note that I'm at work now so I can't cut & paste the exact line, but I think
this is correct:)
Modes: "800x600" "768x483" "720x480" "640x480"
The KDE Graphical boot executes in 800x600, but then switches down to 768x483
before getting to the X login screen. And then 800x600 isn't available within
X. So I deleted the other resolutions from the "Modes:" line (leaving only
800x600), and it now stays in 800x600 through the whole process, but now the
other resolutions are not available to me within X... So what do I have wrong
that would cause it to behave like that?!? TIA... (If you need my conf
files, I'll have to send them this evening when I'm home again... TIA)
--
Jeff
> xvidtune
>
> emike
>
> [EMAIL PROTECTED] wrote:
>
> >I just hooked my frontend box up to my very old Sony CRT Video Projector
> >(Circa
> 1986) via VGA and a special modeline to generate 15khz output (768x483 @
> 59.94Hz
> Interlaced). I had to use an old Matrox video card that would sync down to
> 15khz and generate Composite sync. Here's the modeline I'm currently using
> that
> works pretty well (other than having the left and right sides of the display
> chopped of by roughly 10 pixels):
> > ModeLine "NTSCspec-59.94i" 14.318 768 784 848 910 483 484 492 525
> > Interlace
> -CSYNC
> >
> >Again, it's working fine, but this modeline is 14.318Khz, and my projector
> >is
> capable of scanning up to 26Khz. I'd like to optimize the display mode to
> take
> advantage of this, and hopefully eliminate most of the interlace flicker.
> >
> >So I tried different Modeline settings, and it was a real pain to test
> different modes as restarting X didn't seem to take the new modeline, so I
> would
> have to re-boot inbetween changes. And if the modeline wasn't right, then X
> would fail to load and I would have to connect a standard 'vga' monitor to
> display the text mode display (which is 31khz scan rate) so I can edit the
> config file to try a different modeline. Then I re-boot again with the
> projector connected to try it out... After about 20 attempts at different
> mode
> lines and having very limited success, I decided I'd just have to live with
> the
> 15khz mode for now. (Note: I was using a couple of online modeline
> calculators
> on my Laptop to generate modelines that I was trying on the Linux box, not
> just
> randomly trying different settings!)
> >
> >So as my subject line asks... Is there a 'realtime' modeline tool (similar
> >to
> "PowerStrip" for the PC) for Linux? You know, something that you can select
> different resolutions and adjust things dynamically, and hit 'esc' to revert
> to
> a 'working' display if you end up with an unusable display? Or do I have to
> use
> a PC and PowerStrip to determine what works best with my projector, and then
> generate a modeline from PowerStrip?
> >
> >If it makes any difference, the frontend box is a P4 @ 800Mhz running FC3,
> >and
> the Projector is a Sony VPH-1030Q1 with the following specs:
> > VPH-1030Q (Low serial# 50xxxxx - only up to 26KHz)
> > Lumens: 500
> > Contrast Ratio: 15,000:1
> > Horizontal Scanrate: 15-26KHz
> > Vertical Scanrate: 50-100Hz
> > RGB Bandwidth: 15MHz
> > Composite Sync
> >
> >Thanks in advance...
> >
> >Jeff
> >
> >
> >
> >------------------------------------------------------------------------
> >
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> >[email protected]
> >http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> >
> >
>
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