I just installed Fedora 11 on a new Eee PC 1101, which has an 11.6" screen and offers a maximum resolution of 1366x768.
Alas, I haven't yet been able to get the Poulsbo driver working (the xorg-x11-drv-psb package from RPMFusion), so I am using the vesa driver. The driver defaults 800x600, and I thought it would be straightforward to remedy this (Google returns a gazillion hits); I added this section to xorg.conf:
Identifier "Default Screen"
X starts OK, but resolution is still 800x600. Any ideas on what I seem to be missing here?