On Mon, 14 Feb 2005, Carl F. Hall wrote:

> Thanks for the suggestions Mark.
>
> I changed the vert sync range and horiz. range to the those you said
> were in the log file for the monitor's EDID.  After doing so, I still
> had the problem but now have available 75Hz along w/ 60Hz.  I didn't
> think my monitor worked at anything by 60 but whatever.  So I selected
> 75Hz and the overlap went away!  If this will detremental to my monitor,
> someone please let me know.  Otherwise, I'm going to keep on going with it.

   As long as you have the correct ranges 56-76 vertical, 30-80 Horizontal
in the Section "Monitor" you should be OK.  Those were taken from
the monitor's EDID (plug and play info).  The EDID claims it's a
"DELL 1701FP".  The manufacturer's specifications:

http://support.dell.com/support/edocs/monitors/04pjr/en/specs.htm

claim that it can do [EMAIL PROTECTED]

                        Mark.


>
> Thanks again for all of the very knowledgeable help.
>
> _Carl
>
> Mark Vojkovich wrote:
> >    The monitor's EDID (printed out in the logfile) indicates
> > a prefered mode, which implies the native panel resolution is
> > 1280x1024.  It also specifies a vertical sync range of 56-76 Hz
> > and horizontal range of 30-80 kHz (you have 50-75 and 30-65
> > in your XF86Config).  XFree86 chose a [EMAIL PROTECTED] (64KHz) VESA mode
> > with an identical refresh rate to the prefered mode in the EDID.
> > In short, the mode XFree86 chose should have worked, and it
> > sounds like it did at one time, so I guess we can't rule out a
> > hardware issue.  You can try changing the sync pulses. It's
> > using the following modeline now:
> >
> > Modeline "1280x1024"  108.00  1280 1328 1440 1688  1024 1025 1028 1066 
> > +hsync +vsync
> >
> > If you put that line in the Section "Monitor" XFree86 will use it
> > instead of the internal one.  You can change the pulses by changing
> > the +/- before the hsync and/or vsync.  You also might want to
> > check your monitor cable to make sure it's plugged in tightly.
> > If this doesn't work you could try lowering that pixel clock (the 108.00)
> > a bit to see if it works any better (eg. something between 102 and 108).
> >
> > Does your video card have a DVI connector?  If you use it you
> > will be bypassing your monitor's analog circuitry.
> >
> >
> >             Mark.
> >
> >
> >
> > On Mon, 14 Feb 2005, Carl F. Hall wrote:
> >
> >
> >>I have an LCD monitor that does auto adjustments based on the input and
> >>not a lot, but some, adjusting I can do manually outside of color and
> >>contrast.  Other resolutions seem to work fine so I can't agree with the
> >>hardware assessment but I'm not informed enough on the area to
> >>completely disagree.  Is there anything I can change in the config to
> >>change the vertical synch pulses and maybe fix it that way?
> >>
> >>
> >>Doug McNutt wrote:
> >>
> >>>At 10:40 -0500 2/14/05, Carl F. Hall wrote:
> >>>
> >>>
> >>>>I have an overlap at the bottom of the screen that is a copy of the first 
> >>>>10-15 pixels of the top of the screen.  I'm running at 1280x1024.  When I 
> >>>>switch to 1024x768, the problem doesn't show.  I've tried adjusting the 
> >>>>monitor but there are useful things, namely the status bar, behind that 
> >>>>overlap.
> >>>
> >>>
> >>>Sounds like a typical hardware problem. The internal adjustment in your 
> >>>monitor is probably called vertical phase. The monitor is failing to synch 
> >>>tightly to the vertical synch pulses form the video card when the rate is 
> >>>pushed too high. If you're lucky it's just an internal adjustment but it's 
> >>>more-often due to change in value of a capacitor on the printed circuit 
> >>>board. I doubt that those pixels are actually copies but if they are I'm 
> >>>all wrong. The video card would have to be thoroughly messed up to send 
> >>>some pixels twice.
> >>>
> >>>It's extremely rare for that kind of problem to originate in a video card.
> >>>
> >>
> >>
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