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back in ubuntu 9, maximum resolution supported was 960x600, by editing xorg.conf i was able to get 1024x768 resolution. i recently installed ubuntu 11.10.. now again maximum resolution i can get in display panel is 960x600 .. i tried editing xorg but there was no xorg and when i tried to create one access was denied.

I'm new to linux commands so, step by step help will be appreciated.

I added /etc/X11/xorg.conf containing:

Section "Device"
    Identifier    "Configured Video Device"
EndSection

Section "Monitor"
    Identifier    "Configured Monitor"
    HorizSync       30.0-62.0
    VertRefresh     50.0-70.0
EndSection

Section "Screen"
    Identifier    "Default Screen"
    Monitor        "Configured Monitor"
    Device        "Configured Video Device"
    DefaultDepth    24
    SubSection "Display"
        Depth    24
        Modes     "1024x768" "800x600"
    EndSubSection
EndSection 
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3 Answers 3

  1. Enter the command below in your terminal:

    gksu gedit /etc/X11/xorg.conf
    
  2. Copy and paste the following options into that file:

    Section "Device"
        Identifier    "Configured Video Device"
    EndSection
    
    Section "Monitor"
        Identifier    "Configured Monitor"
        HorizSync       30.0-62.0
        VertRefresh     50.0-70.0
    EndSection
    
    Section "Screen"
        Identifier    "Default Screen"
        Monitor        "Configured Monitor"
        Device        "Configured Video Device"
        DefaultDepth    24
        SubSection "Display"
            Depth    24
            Modes     "1024x768" "800x600"
        EndSubSection
    EndSection 
    
  3. Save your edits, and restart (log out and back in or reboot).

Enjoy.

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With regard to the HorizSync and VertRefresh lines, you should verify the values here against the frequency range of your monitor by checking its documentation. –  John S Gruber Oct 14 '12 at 17:07

I've had a very similar problem and I got it working reliably by following these steps. Give it a try!

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You can follow the same method you used before, but if you need to create xorg.conf do so as follows. From the command line ("Terminal"):

gksudo gedit /etc/X11/xorg.conf

Paste your configuration in there and save it. Now the file should exist and you should be able to edit it like you did before.

If you need more help after you get that far, edit your question and we can continue. :)

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i added xorg.conf via terminal and added code i previously used. now ubuntu is not starting it freezes on boot. –  nepallic Nov 2 '11 at 16:45
    
@nepallic, can you paste in the change that you actually made into your question? :) –  dpb Nov 2 '11 at 22:04
    
Section “Device” Identifier ”Configured Video Device” EndSection Section “Monitor” Identifier ”Configured Monitor” HorizSync 30.0 – 62.0 VertRefresh 50.0 – 70.0 EndSection Section “Screen” Identifier ”Default Screen” Monitor ”Configured Monitor” Device ”Configured Video Device” DefaultDepth 24 SubSection “Display” Depth 24 Modes ”1024×768″ “800×600″ EndSubSection EndSection , i don't know about much about formatting here –  nepallic Nov 4 '11 at 11:07
    
Can you paste this into your question? Just click on the edit link under your question. –  dpb Nov 9 '11 at 16:49
    
@nepallic I edited the contents into your question. I noticed special characters for quotes and dashes, you may want to check the contents of your xorg.conf to ensure that the characters are correct. –  Lekensteyn Dec 5 '11 at 21:51

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