Please help with resolution problem

[hovh03]

The system: Intel Pentium 4, 2.6 Ghz, OpenSuse 10.3, Nvidia Geforce 6200

I installed the graphic card driver from:

Linux Display Driver - x86

I setup the machine with a CRT monitor, 4:3 ration, model P1600. I can only set the resolution to 1600x1200, even the monitor can goes higher than that.

But my goal is to have it works with a 15.4 inch 16:9 ratio 1920x1200 LCD.

Connected to this LCD:

- Manufacturer: Sharp
- Model: LQ154M1LW02
- Response Time: 25ms
- Contrast Ratio: 400:1
- Color: 256k (16.2mil w/ dithering)
- Screen Size Ratio: 16:10
- Resolution: 1920x1200

Use my xorg.conf below, I see the resolution is 1600x1200 in the Yast/Hardware/Monitor screen. This LCD can display at 60Hz and native at WUXGA (1920x1200). I didn't see the resolution option in Yast to change to 1920x1200. The odd thing is that it still shows P1600 as my monitor. There is no mention of that in the xorg.conf file (is it cached somewhere, or stored else where?). I change monitor to LCD, but only see 1920x1200 at 75Hz. This doesn't work with my LCD. There is a screen for vertical and horizontal refresh, but I am not sure what exactly the right value.

Anyway, please help me. Command line (vi) is fine as long as it works.

Here is my current /etc/X11/xorg.conf file:

# Xorg configuration created by system-config-display

Section "ServerLayout"
Identifier "single head configuration"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
EndSection

Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
EndSection

Section "Monitor"

### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
Identifier "Monitor0"
ModelName "LCD Panel 1920x1200"
### Comment all HorizSync and VertSync values to use DDC:
HorizSync 31.5 - 90.0
VertRefresh 59.9 - 60.1
Option "dpms"
EndSection

Section "Device"
Identifier "Videocard0"
Driver "nvidia"
VendorName "NVidia"
BoardName "GeForce 6200 (0x0221)"
Screen 0
EndSection

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 16
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 8
Modes "1920x1200" "1680x1050" "1600x1200" "1600x1024" "1440x900" "1400x1050" "1280x1024" "1280x960" "1280x800" "1152x864" "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16
Modes "1920x1200" "1680x1050" "1600x1200" "1600x1024" "1440x900" "1400x1050" "1280x1024" "1280x960" "1280x800" "1152x864" "1024x768" "800x600" "640x480"
EndSubSection
EndSection

[peteh]

Open 'krandrtray'. Right click on the its icon in the system tray and see what the list of screen resolutions give. If it gives 1900x1200 just click it, accept and then see how it looks.
You'll find it in the menu under Applications >System >Desktop Applet.

PS I'm assuming you're using KDE - I'm sure gnome will have something similar.

[hovh03]

I'll check that. However, when I right click on the desktop, and click on configure the desktop. Go to the display, it says something about I use some option which means I can't configure it there. I'll post the exact message when I get home. Thanks.

[flebber]

Yes that is what peteh is referring you to , he is right on the money.

[hovh03]

The message says the computer uses RandX extension (or something like that), and it's version is new so there's no GUI for it.

However, I am not sure that'll work. The reason being that I use Yast, and change it there, and the screen goes blank on me when I change the monitor to LCD 1920x1200 at 60Hz. I also change the other frequency range similar to the one that is working in the xorg.conf.

Under Windows, I can set to 1920x1200 without any problem for this panel (just to show that the panel indeed works at this resolution).

[EclipseAgent]

The message says the computer uses RandX extension (or something like that), and it's version is new so there's no GUI for it.

However, I am not sure that'll work. The reason being that I use Yast, and change it there, and the screen goes blank on me when I change the monitor to LCD 1920x1200 at 60Hz. I also change the other frequency range similar to the one that is working in the xorg.conf.

Under Windows, I can set to 1920x1200 without any problem for this panel (just to show that the panel indeed works at this resolution).

Have you tried installing X.org 7.3

[hovh03]

I am running Xorg 7.2 right now. I'll see if 7.3 would help. Here is what I found so far:

Using the proprietary Nvidia nvidia-settings too, I can only to set the resolution at 1920x1440 (and others that works with this panels such as 800x600, 1024x768, 1600x1200). However, no option for 1920x1200.

I generate at 1920x1440, and then change it by hand to 1920x1200, and it doesn't work, and falls down to a lower resolution. I keep it at 1920x1440, and it doesn't work. I also try panning down to 1920x1200 but it doesn't work either.

So far, the pictures look great at 1600x120, but I just can't wait to see it at 1920x1200. It stretch out a little, so there's so fuzzy there. It could be the card's problem. Another option is to install Windows on it and try again. I may do that (I have another hard drive spare to swap and test it out to see if it's the card's problem.

[peteh]

Yast won't let you change it because the available resolutions aren't there. Use the KRandRtray icon that I mentioned earlier.

[hovh03]

Good news. I got it to work last night by adding a modeline for 1920x1200.

Thank you all for helping.

To get the mode line value, I downloaded the gtf.c file and compile it from here:

GTF XFree86 modeline generator

gcc gtf.c -o gtf -lm -Wall

Then run the output file. It should tell you what to enter.