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Thread: I can't get 1920x1200 resolution

  1. #1
    Join Date
    Jul 2007
    Beans
    8

    I can't get 1920x1200 resolution

    Hi,

    I have a:
    TFT Philips 24" 240BW8EB/00 screen
    VGA 512MB ASUS EAX1550 SILENT/TD/512MB DVI
    O.S. UBUNTU 7.10
    Kernel 2.6.22-14-generic

    and when I start, the displayed resolution in the screen is
    1600x1200.
    The problem is that if I go to SISTEM-ADMINISTRATION-SCREEN AND GRAPHICS menu it doesn't offers the possiblity to change to 1920x1200,
    because the highest resolution that it offers is 1600x1200.

    Please, could You help me to fix the 1920x1200?
    Many thanks.

    Rafel

    By the way,
    if I edit the /etc/X11/xorg.conf what we get is:
    ---------------------------------------------------------

    # 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 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

    Section "Files"
    EndSection

    Section "InputDevice"
    Identifier "Generic Keyboard"
    Driver "kbd"
    Option "CoreKeyboard"
    Option "XkbRules" "xorg"
    Option "XkbModel" "pc105"
    Option "XkbLayout" "es"
    Option "XkbOptions" "lv3:ralt_switch"
    EndSection

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

    Section "InputDevice"
    Driver "wacom"
    Identifier "stylus"
    Option "Device" "/dev/input/wacom"
    Option "Type" "stylus"
    Option "ForceDevice" "ISDV4"# Tablet PC ONLY
    EndSection

    Section "InputDevice"
    Driver "wacom"
    Identifier "eraser"
    Option "Device" "/dev/input/wacom"
    Option "Type" "eraser"
    Option "ForceDevice" "ISDV4"# Tablet PC ONLY
    EndSection

    Section "InputDevice"
    Driver "wacom"
    Identifier "cursor"
    Option "Device" "/dev/input/wacom"
    Option "Type" "cursor"
    Option "ForceDevice" "ISDV4"# Tablet PC ONLY
    EndSection

    Section "Device"
    Identifier "Generic Video Card"
    Boardname "vesa"
    Busid "PCI:1:0:0"
    Driver "vesa"
    Screen 0
    EndSection

    Section "Monitor"
    Identifier "Generic Monitor"
    Vendorname "Generic LCD Display"
    Modelname "LCD Panel 1920x1200"
    Horizsync 31.5-74.5
    Vertrefresh 56.0 - 65.0
    modeline "640x480@60" 25.2 640 656 752 800 480 490 492 525 -vsync -hsync
    modeline "800x600@56" 36.0 800 824 896 1024 600 601 603 625 +hsync +vsync
    modeline "800x600@60" 40.0 800 840 968 1056 600 601 605 628 +hsync +vsync
    modeline "1024x768@60" 65.0 1024 1048 1184 1344 768 771 777 806 -vsync -hsync
    modeline "1280x960@60" 102.1 1280 1360 1496 1712 960 961 964 994 -hsync +vsync
    modeline "1280x1024@60" 108.0 1280 1328 1440 1688 1024 1025 1028 1066 +hsync +vsync
    modeline "1400x1050@60" 122.61 1400 1488 1640 1880 1050 1051 1054 1087 -hsync +vsync
    modeline "1600x1200@60" 162.0 1600 1664 1856 2160 1200 1201 1204 1250 +hsync +vsync
    Gamma 1.0
    EndSection

    Section "Screen"
    Identifier "Default Screen"
    Device "Generic Video Card"
    Monitor "Generic Monitor"
    Defaultdepth 24
    SubSection "Display"
    Depth 24
    Virtual 1600 1200
    Modes "1600x1200@60" "1400x1050@60" "1280x1024@60" "1280x960@60" "1024x768@60" "800x600@60" "800x600@56" "640x480@60"
    EndSubSection
    EndSection

    Section "ServerLayout"
    Identifier "Default Layout"
    screen 0 "Default Screen" 0 0
    Inputdevice "Generic Keyboard"
    Inputdevice "Configured Mouse"

    # Uncomment if you have a wacom tablet
    # InputDevice "stylus" "SendCoreEvents"
    # InputDevice "cursor" "SendCoreEvents"
    # InputDevice "eraser" "SendCoreEvents"
    EndSection
    Section "Module"
    Load "glx"
    Load "GLcore"
    Load "v4l"
    EndSection
    Section "device" #
    Identifier "device1"
    Boardname "VESA driver (generic)"
    Busid "PCI:1:0:1"
    Driver "vesa"
    Screen 0
    EndSection
    Section "screen" #
    Identifier "screen1"
    Device "device1"
    Defaultdepth 24
    Monitor "monitor1"
    SubSection "Display"
    Depth 24
    Modes "640x480@60" "640x480@72" "640x480@75" "800x600@56" "800x600@72" "800x600@75" "800x600@60" "832x624@75" "1024x768@75" "1024x768@70" "1024x768@60" "1152x864@75" "1280x1024@75" "1280x960@60" "1280x1024@60" "1280x960@75" "1400x1050@60" "1400x1050@75" "1600x1200@65" "1600x1200@60" "1792x1344@60"
    EndSubSection
    EndSection
    Section "monitor" #
    Identifier "monitor1"
    Vendorname "Plug 'n' Play"
    Modelname "Plug 'n' Play"
    modeline "640x480@60" 25.2 640 656 752 800 480 490 492 525 -vsync -hsync
    modeline "640x480@72" 31.5 640 664 704 832 480 489 491 520 -vsync -hsync
    modeline "640x480@75" 31.5 640 656 720 840 480 481 484 500 -vsync -hsync
    modeline "800x600@56" 36.0 800 824 896 1024 600 601 603 625 +hsync +vsync
    modeline "800x600@72" 50.0 800 856 976 1040 600 637 643 666 +hsync +vsync
    modeline "800x600@75" 49.5 800 816 896 1056 600 601 604 625 +hsync +vsync
    modeline "800x600@60" 40.0 800 840 968 1056 600 601 605 628 +hsync +vsync
    modeline "832x624@75" 57.284 832 864 928 1152 624 625 628 667 -vsync -hsync
    modeline "1024x768@75" 78.8 1024 1040 1136 1312 768 769 772 800 +hsync +vsync
    modeline "1024x768@70" 75.0 1024 1048 1184 1328 768 771 777 806 -vsync -hsync
    modeline "1024x768@60" 65.0 1024 1048 1184 1344 768 771 777 806 -vsync -hsync
    modeline "1152x864@75" 108.0 1152 1216 1344 1600 864 865 868 900 +hsync +vsync
    modeline "1280x1024@75" 135.0 1280 1296 1440 1688 1024 1025 1028 1066 +hsync +vsync
    modeline "1280x960@60" 102.1 1280 1360 1496 1712 960 961 964 994 -hsync +vsync
    modeline "1280x1024@60" 108.0 1280 1328 1440 1688 1024 1025 1028 1066 +hsync +vsync
    modeline "1280x960@75" 129.86 1280 1368 1504 1728 960 961 964 1002 -hsync +vsync
    modeline "1400x1050@60" 122.61 1400 1488 1640 1880 1050 1051 1054 1087 -hsync +vsync
    modeline "1400x1050@75" 155.85 1400 1496 1648 1896 1050 1051 1054 1096 -hsync +vsync
    modeline "1600x1200@65" 175.5 1600 1664 1856 2160 1200 1201 1204 1250 +hsync +vsync
    modeline "1600x1200@60" 162.0 1600 1664 1856 2160 1200 1201 1204 1250 +hsync +vsync
    modeline "1792x1344@60" 204.8 1792 1920 2120 2448 1344 1345 1348 1394 -hsync +vsync
    Gamma 1.0
    EndSection
    Section "ServerFlags"
    EndSection

  2. #2
    Join Date
    Dec 2004
    Location
    Atlanta, GA USA
    Beans
    Hidden!
    Distro
    Ubuntu Development Release

    Re: I can't get 1920x1200 resolution

    what kind of video card do you have? if it is an older one, it might not support that resolution.

  3. #3
    Join Date
    Jul 2007
    Beans
    8

    Re: I can't get 1920x1200 resolution

    Hi wolfen69,

    I have an
    ASUS EAX1550 SILENT/TD/512MB DVI, video card
    whose CRT Max Resolution is 1920x 1440

    http://www.asus.com.tw/products.aspx...51&modelmenu=2

    Thanks

    Rafel

  4. #4
    Join Date
    May 2008
    Beans
    1

    Re: I can't get 1920x1200 resolution

    I've been looking for an opportunity to post this information for others since I was unable to find specific info when I searched for it. I consider myself a linux noob, but I can tell you what I have and how I got 1920 x 1200 working.
    I have a Sony GDM-FW900 24 inch widescreen CRT, and an ATI RADEON x1800xt graphics card. This is connected to the CRT through the VGA output, so I don't know if that is different than yours.
    I had to manually enter new modelines for my xorg.conf
    There are modeline calculators available online if you search, but the key problem that stuck me for a while was getting 1920x1200 at 85hz. refresh rate. This requires a specific pixel rate (which is the value after the screen dimensions in the modeline), which I was unable to find in the specs for my monitor.
    Below is the modeline that works for me.
    modeline "1920x1200@85" 270.000 1920 1936 2096 2528 1200 1201 1204 1250

    I recommend getting the specs you know from your monitor and plugging it into a web based modeline calculator. You will need to know your horizontal and vertical refresh rate specs and maybe a couple other things. As I said, the tough part for me was the pixel rate, higher resolution or higher refresh rates mean a higher pixel rate and obviously vice-versa.
    I deleted the other modelines because I was having trouble having ubuntu start with my optimal resoultion and refresh rate. I think I should mention to be careful to backup your xorg file and also that invalid rates and signals to your monitor can probably cause it to have problems.

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