X doesn't work under kernel-2.6.18-1.2726.fc6xen

[parta]

Hi

I updated FC6T3 with the most recent upadates available. This installed
2.6.18-1.2726.fc6xen
Under this new kernel my X doesnt work. It exits with the following error

(EE) I810(0): No Video BIOS modes for chosen depth.
(II) UnloadModule: "i810"
(II) UnloadModule: "ddc"
(II) Unloading /usr/lib/xorg/modules/libddc.so
(II) UnloadModule: "int10"
(II) UnloadModule: "int10"
(II) UnloadModule: "vgahw"
(II) Unloading /usr/lib/xorg/modules/libvgahw.so
(II) UnloadModule: "vbe"
(II) Unloading /usr/lib/xorg/modules/libvbe.so
(II) UnloadModule: "int10"
(II) Unloading /usr/lib/xorg/modules/libint10.so
(EE) Screen(s) found, but none have a usable configuration.

Fatal server error:
no screens found

It works perfect for the corresponding bare kernel 2.6.18-1.2726.fc6
It also works all right with the old xen kernel 2.6.18-1.2699.fc6xen
Here is my xorg.conf

# Xorg configuration created by system-config-display

Section "ServerLayout"
        Identifier     "single head configuration"
        Screen      0  "Screen0" 0 0
        InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "InputDevice"
        Identifier  "Keyboard0"
        Driver      "kbd"
        Option      "XkbModel" "pc105"
        Option      "XkbLayout" "us"
EndSection

Section "Monitor"
        Identifier   "Monitor0"
        VendorName   "Monitor Vendor"
        ModelName    "Samsung SyncMaster 793S/793V/CM173G"
        HorizSync    40.0 - 50.0
        VertRefresh  80.0 - 120.0
        Option      "dpms"
EndSection

Section "Device"
        Identifier  "Videocard0"
        Driver      "i810"
EndSection

Section "Screen"
        Identifier "Screen0"
        SubSection "Display"
               Viewport   0 0
               Depth     24
               Modes    "1024x768"
        EndSubSection
        Device     "Videocard0"
        DefaultDepth     24
EndSection

-- 
pritam