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After a clean install of XP, the DVI side of my video card only works with a DVI to VGA adapter (VGA cable now has to be used on this monitor in question).

This monitor Worked fine before with a DVI cable. XP installed a Radeon 9200 series driver. I downloaded a more specific Radeon 9250 driver, but it did not help. I would just use the adapter, but the quality of this monitor is lower than that of my primary monitor.

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How have you established it is the DVI on the graphics card rather than the DVI on the monitor or the DVI cable? Seems strange that a DVI->VGA adapter would work (where it takes a DVI signal and converts it successfully) and yet the DVI signal doesn't work without conversion. – Paul Dec 7 '11 at 6:04
    
For what it's worth the DVI->VGA adapter doesn't do any conversions - it uses the analog output pins that are part of the DVI connector to begin with (DVI connectors usually output both digital and analog signals). – user55325 Dec 7 '11 at 10:22
    
@user55325 Oh yeah DVI-I, I forgot about this, it is most likely that this is what is being used. So we don't know that any digital signal is being produced from the card. – Paul Dec 7 '11 at 11:03

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