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General discussion

Peculiar Video Problem

by jtob2 Apr 23, 2004 1:33PM PDT

Windows98 SE with a Soyo 7VBA133U motherboard, 1300Mhz Celeron and 448 Meg of RAM.
I am attempting to install a PCChips AG315P-64 Video Card.
As soon as the BIOS Screen appears, the display is abnormal much larger than the normal size and folded over horizontally. All text is much larger than normal and also folded over horizontally. Windows does appear to boot but the display never recovers to a normal size display. There is no difference whether the J2 jumper setting is set to AGP 2X or AGP 4X. The Motherboard is a Soyo 7VBA133U running a 1.3 Ghz Celeron. The sytem tests perfectly with an NVidia GEForce AGP Card so there appears to be no issue with the motherboard.
Does anyone have any ideas or recommendations?

Please advise,

Thanks,

Jim O'Brien

Discussion is locked

4 Posts
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Re:Peculiar Video Problem
by 1wannabesmart2 Apr 24, 2004 1:56AM PDT

The problem may lie with your monitor. Some 15" monitors do not support resoulutions higher than 1024X768. Perhaps you could lower the resolution and try. If you have a high-end monitor (LCD or CRT 17" or higher) the problem may lie with the TV-Out in your PCChips video chip. Some lower-end cards do not have support for these higher-end monitors. Since it tests properly with a GeForce chip, this may be the case. In such an eventuality, you will not be able to use your card as it is incompatible witn the monitor you have. What monitor are you using and what chipset is your AG315P-64 chip based on?

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Re:Re:Peculiar Video Problem
by jtob2 Apr 24, 2004 3:48AM PDT

I'm using a 17" CRT Monitor and it provides up to 1600X1200. I am operating at 1024X768 without any problems. I cannot tell what chipset the card is using since the Video Chip is hidden beneath a permanently mounted heat sink. This version of the card does not provide a TV-out.

It behaves as though the Scanning frequency is incorrect but it is synchronized vertically as the text is discernible although exceptionally magnified.

Thanks,

Jim

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Re:Peculiar Video Problem
by JMarchi Apr 24, 2004 2:52AM PDT

If the BIOS screen appears to large then something is quite incompatible between the new card and your system or your monitor. You need to try different monitor to narrow this down, it has nothing to do with resolution settings in windows since the BIOS screen comes up at the lowest resolution you can use.

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Discovered the Cause
by jtob2 Apr 24, 2004 7:01AM PDT

I found that the video card operated properly in the same PC when connected directly to a different monitor. I have been using a KVM switch to connect to the system and subsequently found that the only time the card acts up is when it is connected to a monitor through the KVM switch. I don't know the exact reason but the KVM switch seems to be the cause of the problem.

Thanks for the suggestions, they helped in isolating the cause.

Jim

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