[XFree86] Unable to set vertical refresh rate correctly

2003-02-07 Thread Eric Mangold
Hi,

I'm trying to setup Xfree86 4.2.1 for use with my Elements 9D monitor and a 
GeForce2MX 200 graphics card. It is currently working fine with the nvidia 
driver.

The problem is that X is setting my monitor to 75Hz at 1152x864. The 
monitor is capable of 100Hz at that resolution, and that's what I'm running 
 at under Windows.  I've tried running "X -configure" but that doesn't do 
anything special with regard to my monitor.  I've also played with 
xvidtune, secifically adjusting the width and height in order to raise the 
refresh rate a bit.  I havn't been able to make it operate above ~84Hz 
while still being able to compensate with the physical monitor controls. In 
other words, anything higher and I can no longer keep the picture at the 
right physical dimensions.

Thanks in advance,
-Eric Mangold

My XF86Config-4 file is shown below:

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Re: [XFree86] Unable to set vertical refresh rate correctly

2003-02-07 Thread Eric Mangold
Sorry, I sent the previous mail when I meant to save a draft.  Please
let me know if any additional information is required.

Thanks,
Eric Mangold

The XF86Config-4 really follows:

Section "Files"
 FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/CID"
 FontPath"/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
 FontPath"/usr/lib/X11/fonts/misc"
 FontPath"/usr/lib/X11/fonts/cyrillic"
 FontPath"/usr/lib/X11/fonts/100dpi/:unscaled"
 FontPath"/usr/lib/X11/fonts/75dpi/:unscaled"
 FontPath"/usr/lib/X11/fonts/Type1"
 FontPath"/usr/lib/X11/fonts/Speedo"
 FontPath"/usr/lib/X11/fonts/100dpi"
 FontPath"/usr/lib/X11/fonts/75dpi"
EndSection

Section "Module"
 Load"bitmap"
 Load"dbe"
 Load"ddc"
 Load"extmod"
 Load"freetype"
 Load"glx"
 Load"int10"
 Load"record"
 Load"xtrap"
 Load"speedo"
 Load"type1"
 Load"vbe"
EndSection

Section "InputDevice"
 Identifier"Generic Keyboard"
 Driver"keyboard"
 Option"CoreKeyboard"
 Option"XkbRules""xfree86"
 Option"XkbModel""pc104"
 Option"XkbLayout""us"
EndSection

Section "InputDevice"
 Identifier"Configured Mouse"
 Driver"mouse"
 Option"CorePointer"
 Option"Device""/dev/input/mice"
 Option"Protocol""ImPS/2"
 Option"ZAxisMapping""4 5"
EndSection

Section "Device"
 Identifier"Generic Video Card"
 Driver"nvidia"
EndSection

Section "Monitor"
 Identifier"Generic Monitor"
 HorizSync30-95
 VertRefresh50-150
 Option"DPMS"
# This will get me to 84Hz, though I'll be damned if it doesn't add a
bit of distortion
#Modeline"1152x864"108.00   1152 1216 1344 1428864  865
868  900 +hsync +vsync

EndSection

Section "Screen"
 Identifier"Default Screen"
 Device"Generic Video Card"
 Monitor"Generic Monitor"
 DefaultDepth16
 SubSection "Display"
 Depth1
 Modes"1152x864" "800x600" "640x480"
 EndSubSection
 SubSection "Display"
 Depth4
 Modes"1152x864" "800x600" "640x480"
 EndSubSection
 SubSection "Display"
 Depth8
 Modes"1152x864" "800x600" "640x480"
 EndSubSection
 SubSection "Display"
 Depth15
 Modes"1152x864" "800x600" "640x480"
 EndSubSection
 SubSection "Display"
 Depth16
 Modes"1152x864" "800x600" "640x480"
 EndSubSection
 SubSection "Display"
 Depth24
 Modes"1152x864" "800x600" "640x480"
 EndSubSection
EndSection

Section "ServerLayout"
 Identifier"Default Layout"
 Screen"Default Screen"
 InputDevice"Generic Keyboard"
 InputDevice"Configured Mouse"
EndSection




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Re: [XFree86] Unable to set vertical refresh rate correctly

2003-02-08 Thread Eric Mangold
I still havn't found any way to set my fresh rate to 100hz.  I've been
searching for documentation on the subject for a while now, and thus far
nothing has helped.

The only configuration document that I have found (besides random
ramblings on google) is the Debian XF86Config-4 man page.  It's helpful
for various things, but not for my specific problem.  Also, there doesn't
appear to be any official config file documentation for 4.2.1.

Again, my vid card is a geforce2mx, "nvidia" driver, on an Elements 9D
monitor.

Does anyone know how to force X to set a certain fresh rate?

Thanks,
Eric Mangold

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Re: [XFree86] Unable to set vertical refresh rate correctly

2003-02-08 Thread Eric Mangold
Don wrote:


First, if you are only running one resolution, specify:
VertRefresh	95-100


Good idea, I'll give it a try.



In your monitor section in your config file to specify a vertical refresh
of between 95 and 100HZ. This should be sufficient by itself.

You can also specify modelines with the correct pixel clock. You would
need to google for one of the mode line generators and use it to generate
a modeline for your monitor with the correct horizontal, vertical and
pixel clocks.


...



Frankly, setting a refresh rate of 100 is useless. I have extremely
sensitive eyes and I can not notice a refresh above 82Hz or so.


I have good eye-sight and there is a noticeable difference between 85hz and 
100.  My monitor isn't that great though, so perhaps it would be less 
noticeable with a higher-quality display.


Second, a high refresh rate reduces the clarity of the image on your
screen. Problems such as ghosting appear. Poor quality cables, long
cables, high resolution or a low quality monitor make the problem worse.

Your refresh rate should be a few Hz higher than the highest refresh rate
at which you stop noticing flicker. If you can still see a flicker at 75Hz
then run your monitor at 80 or 85.

My ViewSonic P815 was capable of 120Hz at 1600x1200 (I believe. Been a
long time since I used a CRT). I never ran it above 85Hz because it simply
wasn't necessary.

If you want a 100% rock solid image, then get an LCD.


Thanks for the info!

-Eric M

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