could not run native resolution on LG L177WSB Flatron with G31 chipset

My office is starting to use LG L177WSB Flatron LCD Monitor with Gigabyte GA-G31M-ES2L v1.x (G31 Intel onboard VGA). Too bad the latest graphic driver from Intel could not set its native resolution 1440x900, other non native resolution such as 1600x900 or even higher is supported. Is this a bug?

Could Intel updated its driver to support LG L177WSB LCD Monitor with its native resolution which is 1440x900?

I've tried using other monitor Dell 17" LCD Monitor and it could run 1440x900 (native resolution too). It's only using LG L177WSB 17" LCD Monitor the driver could not set to its native resolution.

• Intel® Graphics Media Accelerator Driver for Windows* 7 64 (exe): 15.​12.​75.​4.​64.​1930
  
• Gigabyte GA-G31M-ES2L v1.x BIOS: F8
  
• Windows 7 Pro SP1 x64
  
• LG L177WSB Driver for Windows 7 is not available