Re: Resolution in KDE4 and X-Games 1280x800 not available
Sorry, this fell through the cracks somehow.
There is no mode defined named "1280x800". The EDID doesn't list that as a supported resolution. You'll have to add one using a ModeLine in xorg.conf. Please see the xorg.conf man page. You might also want to look into the 'cvt' program, which you can use to generate mode lines.