Display problems on Dell Inspirion 1100

[Verity]

I have installed Mandrake 9.1 on my dell inspiron everything works well except for the display which defaults at 640*480 even though I have specified 1024*768, and I cannot change the resolution. Here are the relevant specs:

Dell 1024 Flat Panel Display
Intel 845 Graphics Board

Here is my XF86Config-4 file [I have only added one line, the one in the card sector specifing the videoram everything else is untouched]

# File generated by XFdrake.

# ************************************************** ********************
# Refer to the XF86Config man page for details about the format of
# this file.
# ************************************************** ********************

Section "Files"
# Multiple FontPath entries are allowed (they are concatenated together)
# By default, Mandrake 6.0 and later now use a font server independent of
# the X server to render fonts.
FontPath "unix/:-1"
EndSection

Section "ServerFlags"
#DontZap # disable <Crtl><Alt><BS> (server abort)
#DontZoom # disable <Crtl><Alt><KP_+>/<KP_-> (resolution switching)
AllowMouseOpenFail # allows the server to start up even if the mouse doesn't work
EndSection

Section "Module"
Load "dbe" # Double-Buffering Extension
Load "v4l" # Video for Linux
Load "extmod"
Load "type1"
Load "freetype"
Load "glx" # 3D layer
EndSection

Section "InputDevice"
Identifier "Keyboard1"
Driver "Keyboard"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
Option "XkbCompat" ""
Option "XkbOptions" ""
EndSection

Section "InputDevice"
Identifier "Mouse1"
Driver "mouse"
Option "Protocol" "PS/2"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons"
Option "Emulate3Timeout" "50"
EndSection

Section "Monitor"
Identifier "monitor1"
VendorName "Dell"
ModelName "Dell 1024X Laptop Display Panel"
HorizSync 31.5-48.5
VertRefresh 59.0-75.0

# Sony Vaio C1(X,XS,VE,VN)?
# 1024x480 @ 85.6 Hz, 48 kHz hsync
ModeLine "1024x480" 65.00 1024 1032 1176 1344 480 488 494 563 -hsync -vsync

# TV fullscreen mode or DVD fullscreen output.
# 768x576 @ 79 Hz, 50 kHz hsync
ModeLine "768x576" 50.00 768 832 846 1000 576 590 595 630

# 768x576 @ 100 Hz, 61.6 kHz hsync
ModeLine "768x576" 63.07 768 800 960 1024 576 578 590 616
EndSection

Section "Device"
Identifier "device1"
VendorName "Intel Corporation"
BoardName "Intel 845"
Driver "i810"
Option "DPMS"
EndSection

Section "Screen"
Identifier "screen1"
Device "device1"
Monitor "monitor1"
DefaultColorDepth 16

Subsection "Display"
Depth 8
Modes "1024x768" "800x600" "640x480"
EndSubsection

Subsection "Display"
Depth 15
Modes "1024x768" "800x600" "640x480"
EndSubsection

Subsection "Display"
Depth 16
Modes "1024x768" "800x600" "640x480"
EndSubsection

Subsection "Display"
Depth 24
Modes "1024x768" "800x600" "640x480"
EndSubsection
EndSection

Section "ServerLayout"
Identifier "layout1"
InputDevice "Keyboard1" "CoreKeyboard"
InputDevice "Mouse1" "CorePointer"
Screen "screen1"
EndSection


Thank you for taking the time to help. I appreciate it.

[siddhartha]

change this

Subsection "Display" 
Depth 8 
Modes "1024x768" "800x600" "640x480" 
EndSubsection 

Subsection "Display" 
Depth 15 
Modes "1024x768" "800x600" "640x480" 
EndSubsection 

Subsection "Display" 
Depth 16 
Modes "1024x768" "800x600" "640x480" 
EndSubsection 

Subsection "Display" 
Depth 24 
Modes "1024x768" "800x600" "640x480" 
EndSubsection 
EndSection

to this

Subsection "Display" 
Depth 8 
Modes "1024x768"
EndSubsection 

Subsection "Display" 
Depth 15 
Modes "1024x768"
EndSubsection 

Subsection "Display" 
Depth 16 
Modes "1024x768"
EndSubsection 

Subsection "Display" 
Depth 24 
Modes "1024x768"
EndSubsection 
EndSection

also remember, that once in X you can change the resolution by pressing <Crtl><Alt><KP_+>/<KP_->

[Verity]

Thank you. I did as you said but the problem remains. Is there something else that I should try?

[Dolda2000]

I believe the file /var/log/XFree86.0.log is necessary to solve this. However, it's too large to post here, so mail it to me instead and I will put it up on my HTTP server for everyone to see.