I regret to inform you that the Mobile Intel(R) 915GM/GMS,910GML chipset went out of support a few years ago, so Intel(R) no longer provides any technical support for system that have it:
It is very likely that 1080p resolutions were unsupported by this graphics controller.
We apologize for the inconvenience. For more information, please refer to the following website:
http://www.intel.com/p/en_US/support/highlights/graphics/intel915gm?wapkw=mobile%20intel%20915gm/gms,%20910gml%20express%20chipset%20family