From: Trey Kazee (treykazee@yahoo.com)
Date: Mon 21 Apr 2003 - 16:53:16 IDT
First of all, thank you for you prompt response. I
have always enjoyed using SVGALIB. ;)
I am using the rage driver, and had already tried the
"RageDoubleClock" option, but with no success.
I have run svidtune with several options. First,
option 13 works fine (as expected). It reports Horiz.
freq.: 78.855 kHz and Vert. freq.: 74.11 Hz, both of
which should be well within the range of my monitor
(Dell M991, multi-sync monitor). Option 12 is
off-center, but the signal is in-sync. Option 11
(800x600x256) is clear for about 2-3 seconds, after
which it loses sync. Before it loses sync, it reports
H-freq: 78.077 kHz, V-Freq: 71.19 Hz. Finally, option
10 (640x480x256) is out of sync and illegible (this is
the same behaviour I have been seeing).
Quite frankly, this is a step outside of my level of
expertise, and I am stumped. Any ideas you have would
be appreciated.
For now, I have a workaround, since my output video is
not going to be directly displayed, but rather
frame-grabbed and manipulated before display. This
allows me (for now) to go ahead and generate the image
in the higher resolution (1280x1024), then use my
frame-grabber on the other end to only grab 640x480.
But for other applications, I would prefer to have a
better solution.
Thanks again for any assistance you can provide.
Regards,
trey
--- Matan Ziv-Av <matan@svgalib.org> wrote:
> On Fri, 18 Apr 2003, Trey Kazee wrote:
>
> > I'm using SVGALIB 1.4.3 under Redhat 8.0, with an
> > integrated ATI-Rage XL (8M) card.SVGALIB built
> fine
>
> > The funny thing is that it works great for
> > 1280x1024x256, but not 640x480x256.The lower
> > resolution appears to struggle with sync, and
> objects
> > (text, for instance) flicker between 2 horizontal
> > positions.As a test, I tried 800x600x256... it
> > looked great for about 2 seconds, then loses sync
> and
>
> The first thing I need to know is what driver you
> use.
> Run vgatest, and it will display (before the list of
> modes), either VESA
> driver or Rage driver.
> If you use the rage driver, please run svidtune 13,
> which will display
> the frequencies that svgalib sets. Compare those to
> the ones the monitor
> displays (if it does).
>
> You can also try the option "RageDoubleClock" in the
> config file.
>
> --
> Matan Ziv-Av.
> matan@svgalib.org
>
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