Radeon 4870 w/ 2 Acer AL2223W 22" monitors - resolution issue on 2nd

[mike523]

Ok so I just grabbed a 2nd Acer AL2223W monitor on eBay to pair with my original one so I could enjoy a 2 screen setup at home. My first screen is connected to the 4870 via DVI cable. The latest one is connected via VGA cable and I use a VGA-DVI converter to connect it to the 4870. For some reason Windows 7 refuses to detect the 2nd screen as the Acer AL2223W and instead thinks it is "Generic Non-PnP Monitor" and will not allow me to set the resolution to 1680 x 1050 like the first screen. I have tried manually installed the drivers with no change whatsoever. Any idea what is causing this?

 

[blakwidowrsa]

The PnP driver will be installed because windows cannot detect the monitor through the DVI adapter.

You can just manually install the driver for the vga port. Computer management -> device manager -> right click the PnP driver and select update driver.

 

[mike523]

I managed to get that accomplished, weird thing though - when I set it to 1680 x 1050 suddenly there is a bunch of static crap on the screen, not sure how to describe it but it looks like electronic interference though lol. I tried to do a screen capture but the screen capture turned out perfectly, no graphical anomalies whatsoever.

 

[mike523]

Refresh rate was wrong.

 

[mike523]

Best answer selected by mike523.