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256 colour graphics problem :-(

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Name: j2k
Date: May 10, 2003 at 13:21:00 Pacific
OS: Windows 3.1
CPU/Ram: P2 300MHz / 128MB RAM
Comment:

Hi,

I am using an nVidia TNT2 (32MB) graphics card with Microsoft Windows 3.1. In VGA mode, it works fine, but if I use SuperVGA 640x480 256 colours (from the svga.exe file from Windows 3.11), the picture is really screwed. If, however, I use SuperVGA 800x600 16 colours, it works fine.

All I want is to use SuperVGA 640x480 256 colours, but I can't get it working :(

I *can* get it to work using nVidia's own drivers, but they are really buggy and frequently crash the OS.

Attached is a picture of the screwed up screen, compared to the proper screen.

The monitor used is LG 15" StudioWorks 570LS.

I tried MSD and it reports the video card as being "VESA 3 Compliant". I tried SciTech Display Doctor but it says "Cannot find compatible SuperVGA card."

The monitor is definately capable of showing 256 colours as it can display up to 16.7million colours in Windows 95 and upwards. It can also display resolutions up to 1024x768.

I hope you can help.

Thanks in advance.



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Response Number 1
Name: j2k
Date: May 10, 2003 at 13:22:16 Pacific
Reply:

If you can't see the picture, view it here:

http://www.j2k.fire-bug.co.uk/31.jpg

Thanks for any help.


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Response Number 2
Name: j2k
Date: May 10, 2003 at 15:14:21 Pacific
Reply:

Addendum:

I have tried it with another monitor, NEC, with the same problem.

Do I need a software based VESA driver or something? Although MSD reports the card is VESA3 compatible...

Thanks


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Response Number 3
Name: Bray (by Jazza)
Date: May 10, 2003 at 20:41:32 Pacific
Reply:

just use nvidias drivers. if they are buggy let em know


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Response Number 4
Name: j2k
Date: May 11, 2003 at 01:59:23 Pacific
Reply:

That's not an option. I need to use it on ATI and nVidia systems, hence the need for a working generic driver.

Also nVidia is not providing any support for the 3.1 drivers.


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Response Number 5
Name: bert
Date: May 11, 2003 at 04:34:47 Pacific
Reply:

Yeah,

I know wath you mean. I also have this problem with my hercules 3d prophet (Nvidia Geforce2 chipset) I also need a generic driver So please let me know....


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Response Number 6
Name: j2k
Date: May 11, 2003 at 05:44:14 Pacific
Reply:

I just tried it on another machine, with an ATI Radeon card, and again, the screen works fine on 16 colours, if you up it to 256+, it screws up.

I have a feeling it's something to do with the refresh rate setting....is it possible to change the setting in Win 3.1?

Thanks


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Response Number 7
Name: Ghostman 1
Date: May 11, 2003 at 06:38:41 Pacific
Reply:

All you need is the right Video driver...I would try 16 million color ,Instead of 256...


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Response Number 8
Name: j2k
Date: May 11, 2003 at 07:02:14 Pacific
Reply:

Thanks but I'm trying for a Generic Driver if possible, because it will be used on different graphics cards, and must be at least 256 colours.

I'm almost convinced that it's the refresh rate that is the problem, but I can't find a way of changing it in 3.1.


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Response Number 9
Name: j2k
Date: May 11, 2003 at 14:41:34 Pacific
Reply:

Any ideas about changing refresh rate in Windows 3.1? Maybe editing an .INI file?

Or does anyone know the default refresh rate for the SuperVGA 640x480 256 Colours driver?

Thanks


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Response Number 10
Name: Johnny Mash
Date: May 11, 2003 at 18:56:49 Pacific
Reply:

Have you tried the SciTech UniVBE VESA 2.0/3.0 TSR, which is now 'no-longer-supported-ware' from their site? The SciTech Control Center allows you to change refresh rates for your display setting.

www.scitechsoft.com


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Response Number 11
Name: j2k
Date: May 12, 2003 at 02:26:32 Pacific
Reply:

Hi,

I tried that, I get "No compatible SuperVGA chip detected!" although if I check the compatible chips, the nVidia TNT2 *is* an option there, but it won't detect it.

I'm confused :(


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Response Number 12
Name: x86
Date: May 13, 2003 at 05:35:36 Pacific
Reply:

I should imagine the nVidia card is newer than SciTechsoft drivers which were devoloped some time ago, probably for 8 or 16MB


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Response Number 13
Name: j2k
Date: May 13, 2003 at 09:24:06 Pacific
Reply:

More than likely. So is there any way whatsoever to change the refresh rate?

What is the refresh rate used for the standard "SuperVGA 640x480 256 colors" driver anyway?


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Response Number 14
Name: j2k
Date: May 15, 2003 at 07:46:57 Pacific
Reply:

Anyone know?


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Response Number 15
Name: bert
Date: May 15, 2003 at 08:30:18 Pacific
Reply:

the refresh rate is 60hz


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Response Number 16
Name: j2k
Date: May 15, 2003 at 15:02:01 Pacific
Reply:

Odd. Both monitors (and graphics cards) are definately capable of 60Hz.


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Response Number 17
Name: j2k
Date: June 12, 2003 at 12:07:18 Pacific
Reply:

Anyone found a way to change the video refresh rate using the standard SVGA driver?


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