I had a similar problem on my Dell Inspiron B130. /etc/X11/xorg.conf had the correct settings, but I was forced to run 915resolution to mess with the video BIOS and actually get the correct resolution.
I'm going to mark this bug confirmed, too. There have been enough people, for sure! ** Changed in: xorg (Ubuntu) Status: Unconfirmed => Confirmed -- X.org doesn't detect widescreen resolution https://launchpad.net/bugs/63551 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs