On Sun, Feb 24, 2008 at 9:51 PM, James G. Sack (jim) <[EMAIL PROTECTED]> wrote:
>
> Carl Lowenstein wrote:
> > On Sun, Feb 24, 2008 at 3:39 PM, Gus Wirth <[EMAIL PROTECTED]> wrote:
> >> Carl Lowenstein wrote:
> >> > So I bought a wide-screen monitor, 1920x1200. I can't make my
> >> > combination of hardware and software drive the 16:10 aspect ratio.
> >> >
> >> > Video card is Nvidia NV11 GeForce2 MX/MX400 in AGP slot. Has a single
> >> > analog VGA connector. Monitor can use either VGA or DVI.
> >> > Operating system is (still not upgraded) Fedora Core 3.
> >> >
> >> > /etc/X11/xorg.conf uses "nv" driver. tt works reasonably well at
> >> > 1600x1200 although the display is somewhat distorted. Icon of a CDrom
> >> > is definitely elliptical
> >> >
> >> > Do I need newer software, or a newer video card? I realize that DVI
> >> > is the new thing.
> >> >
> >> > I will try a Fedora 8 live CD as soon as I finish composing this
> message.
> >>
> >> Have you created a custom mode line for the monitor? The EDID info in
> >> the output log (/var/log/Xorg.0.log) should give you some hints. I had
> >> to do this for my laptop display.
> >>
> >> In some cases you may have to tell the driver to ignore the EDID info
> >> and force feed the monitor parameters to the Xorg driver.
> >
> > After a bunch of flapping around, I seem to have an xorg.conf that
> > works. I read the modeline parameters for a 1920x1200 display from
> > /var/log/Xorg.0.log. Also the max and min Horiz and Vert rates. I
> > found a program gtf(1) with which I could calculate parameters for
> > some other resolutions, namely 1680x1050, 1440x900, and 1280x800.
> >
> > I put the "modeline" data spaced out in xorg.conf, like:
> >
> > Section "Monitor"
> > Identifier "Monitor0"
> > VendorName "Monitor Vendor"
> > ModelName "LCD Panel 1920x1200"
> > HorizSync 30.0 - 82.0
> > VertRefresh 56.0 - 76.0
> > Option "dpms"
> > Mode "1920x1200" # from Acer data
> > DotClock 154.0
> > HTimings 1920 1968 2000 2080
> > VTimings 1200 1203 1209 1235
> > Flags "-Hsync" "+Vsync"
> > EndMode
> >
> > repeat <Mode> ... <EndMode> for 3 other reolutions.
> >
> > I also put these resolution numbers in Section Screen, to replace the
> > ones that were there before.
> > SubSection "Display"
> > Viewport 0 0
> > Depth 24
> > Modes "1920x1200" "1680x1050" "1440x900" "1280x800"
> > EndSubSection
> >
> > This seems to have the effect of putting these resolutions at the head
> > of the xrandr(1) list. This looks like the same list that the GUI
> > Preferences -> Screen Resolution reads from. Now if I could only
> > figure out how to get rid of a dozen VESA resolutions that also show
> > up in these lists.
> >
> > It's been an educational afternoon/evening.
>
> How do the reduced resolutions look? 1920x1200 is native, yes? So is
> there any perceived loss of sharpness at lower? Subjective impressions?
>
> What refresh rates do the lower res's run at? Can you tell a difference?
>
Don't know a lot yet, it's only been working at native resolution for
an hour or so. Here's an xrandr report.
[EMAIL PROTECTED] scsi]$ xrandr
SZ: Pixels Physical Refresh
*0 1920 x 1200 ( 524mm x 321mm ) *60
1 1680 x 1050 ( 524mm x 321mm ) 60
2 1440 x 900 ( 524mm x 321mm ) 75
3 1280 x 800 ( 524mm x 321mm ) 75
I chose the refresh rates for lines 1-3 so as not to exceed the max
pixel rate of the monitor. I guess somebody from Acer did the same
for the 1920x1200.
I think I will rest my eyes overnight, and come back for another viewing.
This monitor is the Sunday ad special from Office Depot. But call
them ahead of time to see if there are any in stock. Their web site
said there were none available near my ZIP code.
carl
--
carl lowenstein marine physical lab u.c. san diego
[EMAIL PROTECTED]
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