Higher graphic solution with intel integreted graphic

[cargoo]

I have successful installed 10.4.8 on an optiplex GX270. The machine has an integrated graphic card with an Intel chipset. I did not tick any ATI or nVida options

I get only 1048 x 748 resolution in the display control panal.

My 19 inch wide screen requires 1400 x 900.

 

It would be great if anyone has more information if this is possible.

 

thanks