hi everyone! i have the same video card as you and i've definitely solve the problem: the matter was that those drivers were a bit old, so i just upgrade to ubuntu 9.10 (http://www.ubuntu.com/testing/karmic/alpha5) and now all is fine!!
an advice: is an alpha, so is a bit unstable but it works well. waiting your answers -- Low resolutions with Intel GMA 4500 4 Series Chipset & Ubuntu 8.10 on Widescreen laptop https://bugs.launchpad.net/bugs/333721 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs