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I am trying to install lubuntu on an old laptop. I use the 386 alternate instalation of it, because it has only 256mb ... All when ok so when I start up the lubuntu the screen splits between 1024x768 and 800x600... its very horrible to use =).

Ok I do this:

lspci

and found an ATI Rage mobility M3.

01:00.0 VGA compatible controller: ATI Technologies Inc Rage Mobility M3 AGP 2x (rev 02)

So I tryied the old xorg way to edit the missing resolution, but it does not work:...

Section "Screen"
    Identifier  "Default Screen"
    Device      "ATI Technologies, Inc. Rage Mobility M3 (AGP)"
    Monitor     "Generic Monitor"
    DefaultDepth    24
    SubSection "Display"
        Depth       1
        Modes       "1024x768"
    EndSubSection
    SubSection "Display"
        Depth       4
        Modes       "1024x768"
    EndSubSection
    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

on an brand new xorg.conf...

Do an init 6 to see if X take the changes, but nothing habbened: also tryed to do pkg-reconfigure -changedir /etc/X11 (where I created the new xorg.conf) and nothing.. removed the X conf from /tmp.. also do sudo apt-get update / upgrade... and no luck...

UPDATE Updated to 12.04. This an edited xorg fr old dells like mine:

# xorg.conf (X.Org 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 xorg.conf manual page.
# (Type "man 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 command:
#   sudo dpkg-reconfigure -phigh xserver-xorg
# xorg.conf for dell latitude c600 by A. Howlett and others

Section "ServerLayout"
        Identifier      "Default Server Layout"
        Screen          0 "Screen0"
        InputDevice     "Keyboard0" "CoreKeyboard"
        InputDevice     "Mouse0" "CorePointer"
        InputDevice     "Generic Mouse" "AlwaysCore"
EndSection

Section "Files"
    RgbPath     "/usr/X11R6/lib/X11/rgb"  
    FontPath    "/usr/share/fonts/local"
    FontPath    "/usr/share/fonts/misc"
    FontPath    "/usr/share/fonts/75dpi:unscaled"
    FontPath    "/usr/share/fonts/100dpi:unscaled"
    FontPath    "/usr/share/fonts/Type1"
    FontPath    "/usr/share/fonts/CID"
    FontPath    "/usr/share/fonts/Speedo"
    FontPath    "/usr/share/fonts/cyrillic"
    FontPath    "/usr/share/fonts/artwiz-aleczapka"
    FontPath    "/usr/share/fonts/TTF"
    FontPath    "/usr/share/fonts/util"
    FontPath    "/usr/local/share/fonts"
    FontPath    "/usr/share/fonts"
    FontPath    "/usr/share/fonts"
    FontPath    "/usr/share/fonts/aquafont"
    FontPath    "/usr/share/fonts/artwiz"
    FontPath    "/usr/share/fonts/artwiz-aleczapka-en"
    FontPath    "/usr/share/fonts/corefonts"
    FontPath    "/usr/share/fonts/freefont"
EndSection

Section "Module"
        Load  "GLcore"
        Load  "dbe"
        Load  "dri"
        Load  "extmod"
        Load  "glx"
        Load  "pex5"
        Load  "record"
        Load  "xie"
        Load  "v4l"
        Load  "freetype"
EndSection

Section "InputDevice"
        Identifier  "Keyboard0"
        Driver      "keyboard"
        Option      "XkbModel" "pc104"
        Option      "XkbLayout"       "us"
EndSection

Section "InputDevice"
        Identifier      "Mouse0"
        Driver          "mouse"
        Option          "CorePointer"
        Option          "Device"                "/dev/psaux"
        Option          "Protocol"            "PS/2"
        Option          "Emulate3Buttons"     "true"
        Option          "ZAxisMapping"                "4 5"
EndSection

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

Section "Monitor"
        Identifier "laptop LCD"
        VendorName "Dell"
        ModelName  "Latitude C600"
        HorizSync 31.5-48.5
        VertRefresh 40-70
EndSection

Section "Device"
        Identifier  "Video0"
        Driver      "r128"
        VideoRam     8192
        Option      "EnablePageFlip" "true"
        Option      "AGPFastWrite"  "true"
        Option      "AGPMode"     "2" 
        BusID       "PCI:01:00:0"
        Screen      0
        Option      "Display"  "FP"
        Option      "MonitorLayout"  "CRT, LFP"
EndSection

Section "Screen"
        Identifier "Screen0"
        Device "Video0"
        Monitor "laptop LCD"
        DefaultDepth 16
        Subsection "Display"
                Depth 32
                Modes  "1280x1024" "1152x864" "1024x768" "800x600" "640x480"
        EndSubSection
        Subsection "Display"
                Depth 24
                Modes  "1280x1024" "1152x864" "1024x768" "800x600" "640x480"
        EndSubSection
        Subsection "Display"
                Depth 16
                Modes "1280x1024" "1152x864" "1024x768" "800x600" "640x480"
        EndSubSection
        Subsection "Display"
                Depth 8
                Modes  "1280x1024" "1152x864" "1024x768" "800x600" "640x480"
        EndSubSection
EndSection

Section "DRI"
       Mode    0666
EndSection
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1  
Try changing the DefaultDepth to 16 instead of 24 –  arochester Apr 4 '12 at 16:39
    
it works in 16 but how can I make it work in 24? can I add more Modes??? When this Dell use to had ubuntu 6 I can give a higher resolution... And I do not need to do anything ... –  maniat1k Apr 5 '12 at 0:10
    
Notice that the default depth is set to 16 bits per pixel. On this laptop DRI will only work at 16 bpp. You need DRI if you want to play games or watch videos. If you don't play games or watch videos then you can increase the default depth to 24 (DRI will be de-activated). -- radagast.bglug.ca/laptop/ubuntu_on_latitude_c600.html –  arochester Apr 5 '12 at 9:27

2 Answers 2

pupy linux works great with old machines as it based on ubuntu and use less resourses .For more powerfull:) pc chose Lucid Puppy 5.2 wich is based on ubuntu 10.04 lts

share|improve this answer
    
maybe you are right: but How can I tell that X.Org 7.6 (came in the Puppy 5.2 distrowatch.com/?newsid=06990 )is compatible with my ATI??? where I can check that before do the change of OS? –  maniat1k Oct 23 '12 at 10:45
1  
i think you can try to download live cd and just boot from it and see if it work for you. –  polarkatenuchie Oct 23 '12 at 10:53

In the xorg.conf configuration file look if you load vesa driver. If it's vesa, then you should try to put the proper driver in the configuration file. Try (when no X server is launched) to do a X -configure it will generate a xorg.conf.new file inside the /root folder according to your hardware.

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