horizontal interference at max resolution
Hi All: I recently upgraded from XP Pro sp2 to Vista.
I have two cards installed: a Gigabit AGP 8x card and an ATI Radeon 7000 PCI, neither of which has Vista drivers or is on the compatibility list. Under display settings, Vista selected the Radeon 9250 driver for the Radeon card, and "Standard VGA Graphics Adapter" for the Gigabyte AGP card. On XP, I was running both monitors (an NEC 17" LCD connected to the Gigabyte card and a Rosewill 19" LCD on the Radeon) at 1280 x 1024 resolution without a problem. When I set the monitors to use the same resolution in Vista, the Rosewill started to show horizontal flickering bands of varying intensity, regardless of which card it was connected to. Dropping the resolution to 1024x768 eliminated the interference. Question is, is this a display card, driver, monitor or refresh rate/resolution issue? Seems like the only difference is the driver being used, and indirectly the frequency/refresh rates supported by it? Is there any way around this issue, without appropriate drivers? Do I need to / should I upgrade the video cards to Vista-certified models? I'm hoping to avoid that expense, but I prefer running the monitors at a higher resolution. TIA! |
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