I just Installed Kubuntu on my pc, but I seem to have a big problem I haven't been able to solve since 2 days ago.
I´ve a Intel 82845G graphics controller and a Acer V551 monitor, and they only allow me to pick low resolutions like 800x600.
I've tried everything I found on the web to find a solution to the problem, but no answer seems to help me get through it.
So I finally decided to post.
Changing my xorg.conf file in many ways, allowed me to choose the resolution I want (1024x768), but when I tried it, my screen just went bigger and I couldn't see almost anything but just parts of the window.
Finally I Installed Mandrake 2005 LE and copied the device and monitor section (and changed everything I needed to change on my Ubuntu config file) to my Ubuntu xorg.conf file but still nothing happens.

My original (the one that came with the installation) xorg.conf file is:

# /etc/X11/xorg.conf (xorg X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the /etc/X11/xorg.conf manual page.
# (Type "man /etc/X11/xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following commands:
#
# cp /etc/X11/xorg.conf /etc/X11/xorg.conf.custom
# sudo sh -c 'md5sum /etc/X11/xorg.conf >/var/lib/xfree86/xorg.conf.md5sum'
# sudo dpkg-reconfigure xserver-xorg

Section "Files"
FontPath "unix/:7100" # local font server
# if the local font server has problems, we can fall back on these
FontPath "/usr/lib/X11/fonts/misc"
FontPath "/usr/lib/X11/fonts/cyrillic"
FontPath "/usr/lib/X11/fonts/100dpi/:unscaled"
FontPath "/usr/lib/X11/fonts/75dpi/:unscaled"
FontPath "/usr/lib/X11/fonts/Type1"
FontPath "/usr/lib/X11/fonts/CID"
FontPath "/usr/lib/X11/fonts/100dpi"
FontPath "/usr/lib/X11/fonts/75dpi"
# paths to defoma fonts
FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/CID"
EndSection

Section "Module"
Load "bitmap"
Load "dbe"
Load "ddc"
Load "dri"
Load "extmod"
Load "freetype"
Load "glx"
Load "int10"
Load "record"
Load "type1"
Load "vbe"
EndSection

Section "InputDevice"
Identifier "Generic Keyboard"
Driver "keyboard"
Option "CoreKeyboard"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "es"
EndSection

Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
Option "CorePointer"
Option "Device" "/dev/input/mice"
Option "Protocol" "ImPS/2"
Option "Emulate3Buttons" "true"
Option "ZAxisMapping" "4 5"
EndSection

Section "Device"
Identifier "Intel Corporation 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device"
Driver "i810"
VideoRam 4096
BusID "PCI:0:2:0"
EndSection

Section "Monitor"
Identifier "Acer V551"
HorizSync 30-54
VertRefresh 50-120
Option "DPMS"
EndSection

Section "Screen"
Identifier "Default Screen"
Device "Intel Corporation 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device"
Monitor "Acer V551"
DefaultDepth 24
SubSection "Display"
Depth 1
Modes "1024x768" "800x600" "720x400" "640x480"
EndSubSection
SubSection "Display"
Depth 4
Modes "1024x768" "800x600" "720x400" "640x480"
EndSubSection
SubSection "Display"
Depth 8
Modes "1024x768" "800x600" "720x400" "640x480"
EndSubSection
SubSection "Display"
Depth 15
Modes "1024x768" "800x600" "720x400" "640x480"
EndSubSection
SubSection "Display"
Depth 16
Modes "1024x768" "800x600" "720x400" "640x480"
EndSubSection
SubSection "Display"
Depth 24
#Modes "1024x768" "800x600" "720x400" "640x480"
Modes "800x600"
EndSubSection
EndSection

Section "ServerLayout"
Identifier "Default Layout"
Screen "Default Screen"
InputDevice "Generic Keyboard"
InputDevice "Configured Mouse"
EndSection

Section "DRI"
Mode 0666
EndSection

Can anyone help me solve this problem.
I just dont know what else to do.
Thanks.

I finally found the solution to my particular case.
Here is my xorg.conf file, maybe it'll be of some help to someone.

# /etc/X11/xorg.conf (xorg X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the /etc/X11/xorg.conf manual page.
# (Type "man /etc/X11/xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following commands:
#
# cp /etc/X11/xorg.conf /etc/X11/xorg.conf.custom
# sudo sh -c 'md5sum /etc/X11/xorg.conf >/var/lib/xfree86/xorg.conf.md5sum'
# sudo dpkg-reconfigure xserver-xorg

Section "Files"
FontPath "unix/:7100" # local font server
# if the local font server has problems, we can fall back on these
FontPath "/usr/lib/X11/fonts/misc"
FontPath "/usr/lib/X11/fonts/cyrillic"
FontPath "/usr/lib/X11/fonts/100dpi/:unscaled"
FontPath "/usr/lib/X11/fonts/75dpi/:unscaled"
FontPath "/usr/lib/X11/fonts/Type1"
FontPath "/usr/lib/X11/fonts/CID"
FontPath "/usr/lib/X11/fonts/100dpi"
FontPath "/usr/lib/X11/fonts/75dpi"
# paths to defoma fonts
FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/CID"
EndSection

Section "Module"
Load "bitmap"
Load "dbe"
Load "ddc"
Load "dri"
Load "extmod"
Load "freetype"
Load "glx"
Load "int10"
Load "record"
Load "type1"
Load "vbe"
EndSection

Section "InputDevice"
Identifier "Generic Keyboard"
Driver "keyboard"
Option "CoreKeyboard"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "es"
EndSection

Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
Option "CorePointer"
Option "Device" "/dev/input/mice"
Option "Protocol" "ImPS/2"
Option "Emulate3Buttons" "true"
Option "ZAxisMapping" "4 5"
EndSection

Section "Monitor"
Identifier "monitor1"
VendorName "Generic"
ModelName "1024x768 @ 60 Hz"
HorizSync 31.5-48.5
VertRefresh 50-70
EndSection

Section "Device"
Identifier "device1"
BoardName "Intel 810"
Driver "i810"
VideoRam 16384
Option "DPMS"
Option "XaaNoPixmapCache"
Option "NoDDC"
EndSection

Section "Screen"
Identifier "screen1"
Device "device1"
Monitor "monitor1"
DefaultColorDepth 24
DefaultFbbpp 32
Subsection "Display"
Depth 24
FbBpp 32
Modes "1024x768" "800x600" "640x480"
EndSubsection
EndSection


Section "ServerLayout"
Identifier "Default Layout"
Screen "screen1"
InputDevice "Generic Keyboard"
InputDevice "Configured Mouse"
EndSection

Section "DRI"
Mode 0666
EndSection

This finally allowed me to use the 1024x768 resolution.

thanks for posting your solution. I was able to use your post and modify my xorg.conf for an old 15" Sony Tirinitron Multiscan CPD100ES monitor

I changed the following sections in the xorg.conf

• Section "Monitor"
• Section "Screen"
• Section "Device" (for the intel 82854) sections in the xorg.conf
• Section "ServerLayout" (changed the Screen value to use my screen identifier from the Screen Section

Below are the modified sections from my xorg.conf:

#......

Section "Monitor"
Identifier "Monitor-Sony-CPD100ES"
VendorName "sony"
ModelName "Sony Trinitron CPD100ES"
HorizSync 30-70
VertRefresh 50-120
Option "DPMS"
EndSection

Section "Device"
Identifier "DisplayAdapter-Intel 82854G"
BoardName "Intel 882854G"
Driver "i810"
BusID "PCI:0:2:0"
EndSection

Section "Screen"
Identifier "screen1"
Device "DisplayAdapter-Intel 82854G"
Monitor "Monitor-Sony-CPD100ES"
DefaultColorDepth 24
DefaultFbbpp 32
Subsection "Display"
Depth 24
Modes "1280x1024" "1024x768" "800x600" "640x480"
EndSubsection
EndSection

Section "ServerLayout"
Identifier "Default Layout"
Screen "screen1"
InputDevice "Generic Keyboard"
InputDevice "Configured Mouse"
EndSection


#.....

The above changes allows me to use 640x480, 800x600, 1024x768 @ 85Hz and 1280x1024 @ 60Hz.

Thanks a ton!!! Your answers saved me a few hours work today

Thanks for this.

How to fix screen resolution problems is also described in
https://help.ubuntu.com/community/Fi...esolutionHowto

They duplicate what you say but also give some more.

regards
Desmond Campbell

I had a problem similar on Debian 4.0 and the posts helped.

Thank you for the help too.