New Monitor won't display at native resolution, help please?

I have a Toshiba R400 tablet pc and I just bought a Samsung 2333sw monitor that has a native resolution of 1900x1080. The best I can get the monitor to do is 1600x1050. I have it hooked it with a vga cable. My tablet pc has a gma 950 graphics card.

If I connect this same monitor to my 6 year old desktop that hasn't even been turned on in the past year, it actually looks great and works at native resolution with its crappy integrated intel extreme graphics 2.

I tried windows update and there's no update for my graphics card. I tried going into device manager and telling it to look for a newer driver and it says it has the most recent one. Then I went to intels website and ran the active x controller that scans the system and it says I'm running a custom graphics driver and changing it may cause problems and therefore it won't let me update the driver.

Can someone give me some help on what to do please?

 

I guess you're saying that in Display Properties the slider won't go higher than 1600x1050 for the Samsung.

One thing does come to my mind.

According to the specifications GMA959 can go up to 2048x1536 at 75 Hz maximum resolution. But that shoud be the case when you have only one monitor attached.

Could it be because your GMA950 is already generating an image on your primary monitor and does not have enough resources to go higher than 1600x1050 on the secondary monitor? Anyone?

 

That's not it. I've tried using the external monitor alone exclusively and I get the same results. If I go into properties from the display settings tab, the list mode shows my various resolution options, same as whats available to me. If I go into graphic properties then into information, the systems tab shows that 1920x1080 is a supported mode.

I'm just stumpped. I'm going to try the monitor on a different toshiba laptop tommorrow that also has a gma 950.