LinuxQuestions.org - Resolution problem fedora core 6 intel 915gm!!!

A few days ago i installed fedora core 6 on my laptop:
packardbell easynote s4815
Mobile Intel® Pentium® M - 725A - 2MB L2 Cache - 1,6Ghz
512MB Geheugen
Intel 915GM
50GB HDD
After installing the resolution was 1024x768 i tried to change it but i messed it up now my monitor thinks it is an 1024x768 even the bios reconizes it as a 1024x768 while the native resolution was 1280x800 now i can't get it to 1280x800 not in windows not in the bios and not in linux. I tried the 915resolution patch and also inserted a modline into xorg.conf but it dind't worked. Can anyone help me please!!!:confused:

this is displayed in the xorg.0.log file
(WW) I810(0): Bad V_BIOS checksum
(II) I810(0): Primary V_BIOS segment is: 0xc000
(II) I810(0): VESA BIOS detected
(II) I810(0): VESA VBE Version 3.0
(II) I810(0): VESA VBE Total Mem: 7872 kB
(II) I810(0): VESA VBE OEM: Intel(r)915GM/910ML/915MS Graphics Chip Accelerated VGA BIOS
(II) I810(0): VESA VBE OEM Software Rev: 1.0
(II) I810(0): VESA VBE OEM Vendor: Intel Corporation
(II) I810(0): VESA VBE OEM Product: Intel(r)915GM/910ML/915MS Graphics Controller
(II) I810(0): VESA VBE OEM Product Rev: Hardware Version 0.0
(II) I810(0): Integrated Graphics Chipset: Intel(R) 915GM
(--) I810(0): Chipset: "915GM"
(--) I810(0): Linear framebuffer at 0xC0000000
(--) I810(0): IO registers at addr 0xB0080000
(II) I810(0): 2 display pipes available.
(II) I810(0): detected 7932 kB stolen memory.
(II) I810(0): Kernel reported 110080 total, 1 used
(II) I810(0): I830CheckAvailableMemory: 440316 kB available
(II) I810(0): Will try to reserve 32768 kiB of AGP aperture space
for the DRM memory manager.
(II) I810(0): Monitoring connected displays enabled
(II) I810(0): Will attempt to tell the BIOS that there is 12288 kB VideoRAM
(II) Loading sub module "int10"
(II) LoadModule: "int10"
(II) Reloading /usr/lib/xorg/modules/libint10.so
(II) I810(0): initializing int10
(WW) I810(0): Bad V_BIOS checksum
(II) I810(0): Primary V_BIOS segment is: 0xc000
(II) I810(0): VESA BIOS detected
(II) I810(0): VESA VBE Version 3.0
(II) I810(0): VESA VBE Total Mem: 12288 kB
(II) I810(0): VESA VBE OEM: Intel(r)915GM/910ML/915MS Graphics Chip Accelerated VGA BIOS
(II) I810(0): VESA VBE OEM Software Rev: 1.0
(II) I810(0): VESA VBE OEM Vendor: Intel Corporation
(II) I810(0): VESA VBE OEM Product: Intel(r)915GM/910ML/915MS Graphics Controller
(II) I810(0): VESA VBE OEM Product Rev: Hardware Version 0.0
(II) I810(0): BIOS now sees 12288 kB VideoRAM
(--) I810(0): Pre-allocated VideoRAM: 7932 kByte
(==) I810(0): VideoRAM: 65536 kByte
(==) I810(0): video overlay key set to 0x101fe
(**) I810(0): page flipping disabled
(==) I810(0): Using gamma correction (1.0, 1.0, 1.0)
(II) I810(0): BIOS Build: 1225
(==) I810(0): Device Presence: disabled.
(==) I810(0): Display Info: enabled.
(II) I810(0): Broken BIOSes cause the system to hang here.
If you encounter this problem please add
Option "DisplayInfo" "FALSE"
to the Device section of your XF86Config file.
(II) I810(0): Display Info: CRT: attached: FALSE, present: TRUE, size: (720,400)
(II) I810(0): Display Info: TV: attached: FALSE, present: TRUE, size: (1024,768)
(II) I810(0): Display Info: DFP (digital flat panel): attached: FALSE, present: FALSE, size: (0,2059)
(II) I810(0): Display Info: LFP (local flat panel): attached: TRUE, present: TRUE, size: (1024,768)
(II) I810(0): Display Info: Second (second CRT): attached: FALSE, present: FALSE, size: (0,2059)
(II) I810(0): Display Info: TV2 (second TV): attached: FALSE, present: FALSE, size: (0,2059)
(II) I810(0): Display Info: DFP2 (second digital flat panel): attached: FALSE, present: FALSE, size: (0,2059)
(II) I810(0): Display Info: LFP2 (second local flat panel): attached: FALSE, present: FALSE, size: (0,2059)
(II) I810(0): Size of device LFP (local flat panel) is 1024 x 768
(II) I810(0): No active displays on Pipe A.
(II) I810(0): Currently active displays on Pipe B:
(II) I810(0): LFP (local flat panel)
(II) I810(0): Lowest common panel size for pipe B is 1024 x 768
(==) I810(0): Display is using Pipe B