Resolution

[Stephen Durham]

If I try to specify what is listed in the user manual, horizontal
frequency 31.469-79.976 and Vertical refresh 60-75 nothing changes. The
log states:

(WW) NVIDIA(0): The user specified HorizSync "31.469-79.976" has been
adjusted
(WW) NVIDIA(0): to "31.469-71.000" (the intersection with EDID-specified
(WW) NVIDIA(0): HorizSync "30.000-71.000")
(II) NVIDIA(0): L1710B: Using hsync range of 31.47-71.00 kHz
(II) NVIDIA(0): L1710B: Using vrefresh range of 60.00-75.00 Hz

Is this a shortcoming of the Nvidia drivers or is their a way to
override this? I know that it can work with a refresh of 75, since that
is what I use when I boot into windows (have to play the new Axis and
Allies).

-Stephen

On Wed, 2004-12-08 at 19:00 -0600, Rich Duzenbury wrote:
> On Wed, 2004-12-08 at 16:31 -0500, Stephen Durham wrote:
> > Hello,
> >         I have been looking for an answer to this for a few days now
> > with no luck. I have an LG L1710B LCD and a GeForce 6600GT, currently my
> > resolution is 1280x1024 at 60Hz with a Horizontal Frequency of 63.9kHz.
> > According to LG the resolution can be 1280x1024 at 75Hz with a
> > Horizontal Frequency of 79.9kHz. I understand how to set frequency
> > ranges for a CRT monitor, but I am not sure how to specify exactly what
> > I want for a specific resolution. I don't want to just change it and
> > damage my monitor. I am using the drivers from the Nvidia website,
> > because support for the 6600GT didn't appear until the 6629 drivers, and
> > the ubuntu drivers only go up to 6110 (or something like that).
> > Thanks,
> > Stephen
> > 
> I ran into a similar problem with my monitor.  There is a howto on video
> timings at http://en.tldp.org/HOWTO/XFree86-Video-Timings-HOWTO/.  Note
> that it is mostly out of date given the high-tech monitors we have
> today, but fun reading nonetheless. 
> 
> I also found an online modeline calculator here:
> http://xtiming.sourceforge.net/cgi-bin/xtiming.pl
> 
> Instead of doing all that futzing, I reviewed the specifications for my
> monitor and then made a small change to my /etc/X11/XF86Config-4 file in
> the monitor section as below.  I increased the HorizSync and VertRefresh
> setting to match my what was listed in the specs, and all is fine now.
> 
> Section "Monitor"
>         Identifier      "ViewSonic PF795"
>         HorizSync       30-95
>         VertRefresh     50-150
>         Option          "DPMS"
> EndSection
> 
> The monitor is currently reporting via it's on-screen-display Fh =
> 93.3khz and Fv at 87.5 hz.  No visible flicker, and it was hardly
> viewable at 60.
> 
> Regards,
> Rich
> 
>