Resolution

[Rich Duzenbury]

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that it is mostly out of date given the high-tech monitors we have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