ATI Radeon 9600 Pro and Samsung 240T keeps reverting to 1280 x 1024

[Fun Guy]

I am having a weird problem on a new computer I am building. After installing the drivers for my Radeon 9600 Pro, my Samsung 240T fires right up with the correct resolution (1920 x 1200, using autodetect). Then as soon as I reboot, the monitor fires up and is stuck at 1280 x 1024, without any higher resolutions available, not even 1600 x 1200.

What the hell is going on?

 

[Peter]

You haven't by any chance attached it to VGA _and_ DVI outputs of that card? Either way, what you can do is install the monitor's static driver (rather than the generic PnP monitor driver). That'll keep Windows from (mis-)detecting the monitor.

 

[Fun Guy]

It's a DVI cable that's hooked up to the DVI port on both the card and the monitor, so that's correct.

And Windows detects the monitor properly - it says it's 'Samsung 240T - Digital' so that's fine. It worked properly at first, nothing has changed.

I'll try to update the monitor driver, but I'm sure that's not the issue.

 

[Fun Guy]

Tried updating the monitor drive from Samsung's web site. No joy.

More info: First of all, I've had this monitor hooked up to another computer for a number of years and it ran without a hitch at 1920 x 1200 the entire time. Since trying to move the monitor over to another computer, I've seen two different video cards behave in the same way - initially fire up properly, then upon subsequent reboots, max out the resolution at 1280 x 1024.