F11: X starts at wrong resolution

[sean darcy <seandarcy2 gmail com>]

Just installed i386 F11 from alpha .iso on hp laptop, then did yum upgrade.

Each time X starts at 800x600. xrandr shows the preferred resolution as 
1280x800.

I use xrandr to change to preferred, but how can I set X to start at 
1280 x 800? does this require a modeline after all these years?

sean