Posts Tagged ‘Resolution’

Change Resolution of Unknown Monitor in Ubuntu 11.10

January 30, 2012

Ubuntu LogoI have the HP v185e Monitor and it was unrecognizable by my Ubuntu 11.10. The “Display” setting shows “Unknown Monitor”, and the maximum resolution I could get is 1024 x 768, the optimal resolution is 1368 x 768. I found that the “Unknown Monitor” could be set with XRandr from the posting in the Ubuntu Forum.

I did that right and the resolution is 1368 x 768, but after restarting, the resolution options were reverted back to 1024 x 768. From the Ask Ubuntu, I found that Ubuntu 11.10 have different way to permanenting the XRandr customization than it’s predecessors.

XRandr 001

Here’s the summary (I’m using the example of adding 1440 x 900 resolution):

  1. Open Terminal and type
  2. $ xrandr
  3. The XRandr will show the maximum resolution allowed like this:
  4. Screen 0: minimum 320 x 200, current 1368 x 768, maximum 8192 x 8192
    VGA1 connected 1368x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
       1368x768_60.00   59.9*+
       1024x768       60.0  
       1024x768_60.00   59.9  
       800x600        60.3     56.2  
       848x480        60.0  
       640x480        59.9  
       1280x800_60.00   59.8  
    HDMI1 disconnected (normal left inverted right x axis y axis)
    DP1 disconnected (normal left inverted right x axis y axis)
    HDMI2 disconnected (normal left inverted right x axis y axis)
    DP2 disconnected (normal left inverted right x axis y axis)
    
  5. Type “cvt [x resolution] [y resolution]” in the terminal, for my case is like this:
  6. $ cvt 1440 900
  7. The Terminal will show the output:
  8. # 1440x900 59.89 Hz (CVT 1.30MA) hsync: 55.93 kHz; pclk: 106.50 MHz
    Modeline "1440x900_60.00"  106.50  1440 1528 1672 1904  900 903 909 934 -hsync +vsync
    
  9. For the next step, type:
  10. $ xrandr --newmode [Modeline]

    in my case is

    $ xrandr --newmode "1440x900_60.00"  106.50  1440 1528 1672 1904  900 903 909 934 -hsync +vsync

    Copy the “Modeline” configuration from the previous output

  11. To add the new resolution to the “Display” option type:
  12. $ xrandr --addmode VGA1 1440x900_60.00

    Now the new resolution is ready in the “Display” option
    XRandr 002

  13. To apply the new resolution, type:
  14. $xrandr --output VGA1 --mode 1440x900_60.00

    And now the screen will be in the new resolution

  15. In order to make it permanent, add the resolution to /etc/X11/xorg.conf
  16. $ sudo gedit /etc/X11/xorg.conf
  17. The xorg.conf will show the output like this:
  18. Section "Monitor"
        Identifier    "Monitor0"
        Modeline "1280x800_60.00"   83.50  1280 1352 1480 1680  800 803 809 831 -hsync +vsync
        Modeline "1368x768_60.00"   85.25  1368 1440 1576 1784  768 771 781 798 -hsync +vsync
        Modeline "1024x768_60.00"   63.50  1024 1072 1176 1328  768 771 775 798 -hsync +vsync
    EndSection
    
    Section "Screen"
        Identifier     "Screen0"
        Device         "Card0"
        Monitor        "Monitor0"
        SubSection "Display"
            Modes      "1280x800_60.00" "1368x768_60.00" "1024x768_60.00"
        EndSubSection
    EndSection
    
    Section "Device"
        Identifier    "Card0"
        Driver        ""
    EndSection
    
  19. Add the new Modeline and resolution, for the “Driver” in the “Section Device” I just simply type “Intel” (because I’m using intel standard graphic card), if you are using Nvidia just simply type “nvidia”. The output is like:
  20. Section "Monitor"
        Identifier    "Monitor0"
        Modeline "1440x900_60.00"  106.50  1440 1528 1672 1904  900 903 909 934 -hsync +vsync
        Modeline "1280x800_60.00"   83.50  1280 1352 1480 1680  800 803 809 831 -hsync +vsync
        Modeline "1368x768_60.00"   85.25  1368 1440 1576 1784  768 771 781 798 -hsync +vsync
        Modeline "1024x768_60.00"   63.50  1024 1072 1176 1328  768 771 775 798 -hsync +vsync
    EndSection
    
    Section "Screen"
        Identifier     "Screen0"
        Device         "Card0"
        Monitor        "Monitor0"
        SubSection "Display"
            Modes      "1440x900_60.00" "1280x800_60.00" "1368x768_60.00" "1024x768_60.00"
        EndSubSection
    EndSection
    
    Section "Device"
        Identifier    "Card0"
        Driver        "intel"
    EndSection
    
  21. Restart and see the resolution setting is now permanent

Hope it worked


Anton Hermansyah

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