Boot via DVD resolution 1920, boot from disk resolution 1600

[shroomush]

When I boot from DVD into single user, the Fedora loads my Dell E6500 (Intel Card) with a 1920 1200 resolution - log attached.
When I boot into my installed FC13 OS (root Disk) I only get a 1600 1200 resolution - log attached.

I've been struggling a while with this, so any help would be great.
My default xorg.conf file:

Section "Device"
Identifier "Videocard0"
Driver "vesa"
EndSection

If I add Intel to the "Driver" parameter, it comes up with:
(EE) intel(0): No kernel modesetting driver detected

Thanks.

[CSchwangler]

My understanding is that the vesa driver is not able to provide a resolution of 1920 1200 resolution. The current X server is able to do much of the detection automatically and I am pretty sure that the liveCD runs without xorg.conf. So why don't you try running without xorg.conf. If there is a reason, you should provide it.

[shroomush]

I've now booted without the xorg.conf and I still only have a 1600x1200 & 1280x1024 (xrandr) resolution.

This is the line in the grub.conf that I boot with:

kernel /vmlinuz-2.6.33.6-147.fc13.i686.PAE ro root=/dev/mapper/vg_owitz-lv_root rd_LVM_LV=vg_owitz/lv_root rd_LVM_LV=vg_owitz/lv_swap rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=us nomodeset rhgb quiet

If I remove the nomodeset part and boot, the screen goes blank.