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I would like to have dual monitors on my tower; I have been looking at xorg files for the past year and a half and played in different versions of ...
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  1. #1
    Just Joined! REVEREND_FLIBBLE's Avatar
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    Unhappy xorg radeon driver dual monitors; have been struggling for lil over a year


    I would like to have dual monitors on my tower;

    I have been looking at xorg files for the past year and a half and played in different versions of linux

    I am tempted to apandon the xorg-radeon drivers and change to fglrx; (which i still have little faith in due to past epirience) I don't do this because i have read that changing to fglrx can cause problems with other graphics related things (if fglrx is a good choice at this point let me know)

    I'm running two Hanns-G 1440x900 LCD monitors
    One is VGA the other is DVI input
    my videocard is the Radeon x850 PRO
    my default xorg runs them cloned;

    I would like to have spanned monitors.

    My current OS is Fedora Core 9 and I am running Compiz-Fusion I have tried all of the built in sofware to get dual monitors working but no avail

    I have been using linux for ~4 years (2 years as main OS)

    here is my current xorg file
    Code:
    # Xorg configuration created by system-config-display
    
    Section "ServerLayout"
            Identifier     "single head configuration"
            Screen      0  "Screen0" 0 0
            InputDevice    "Keyboard0" "CoreKeyboard"
    EndSection
    
    Section "InputDevice"
    
    # keyboard added by rhpxl
            Identifier  "Keyboard0"
            Driver      "kbd"
            Option      "XkbModel" "pc105"
            Option      "XkbLayout" "us"
    EndSection
    
    Section "Monitor"
            Identifier   "Monitor0"
            ModelName    "LCD Panel 1440x900"
            HorizSync    31.5 - 56.0
            VertRefresh  56.0 - 65.0
            Option      "dpms"
    EndSection
    
    Section "Device"
            Identifier  "Videocard0"
            Driver      "radeon"
    EndSection
    
    Section "Screen"
            Identifier "Screen0"
            Device     "Videocard0"
            Monitor    "Monitor0"
            DefaultDepth     24
            SubSection "Display"
                    Viewport   0 0
                    Depth     24
            EndSubSection
    EndSection
    and here is the xorg file that i have most reciently tried for dual monitors
    Code:
    ################################################################################
    # Server Layout
    ################################################################################
    
    Section "ServerLayout"
            Identifier     "Dual Head Configuration"
            Screen         "Screen0" 0 0
            Screen         "Screen1" RightOf "Screen0"
            InputDevice    "Keyboard0" "CoreKeyboard"
    #       Option         "Xinerama"  "true"
    EndSection
    
    ################################################################################
    # Input Devices
    ################################################################################
    
    Section "InputDevice
            Identifier  "Keyboard0"
            Driver      "kbd"
            Option      "XkbModel" "pc105"
            Option      "XkbLayout" "us"
    EndSection
    
    
    ################################################################################
    # Monitors: I have two hanns-g LCD Monitors
    ################################################################################
    
    Section "Monitor"
            Identifier   "Monitor0"
            ModelName    "LCD Panel 1440x900"
            HorizSync    31.5 - 56.0
            VertRefresh  56.0 - 65.0
            Option      "dpms"
    EndSection
    
    Section "Monitor"
            Identifier   "Monitor1"
            ModelName    "LCD Panel 1440x900"
            HorizSync    31.5 - 56.0
            VertRefresh  56.0 - 65.0
            Option      "dpms"
    EndSection
    
    ################################################################################
    # Video Cards: I have one Radeon x850 PRO. One monitor is connected to the
    # digital DVI output, the other is connected to the analog VGA output.
    ################################################################################
    
    Section "Device"
            Identifier  "Videocard0"
            Driver      "radeon"
            Screen      0
    EndSection
    
    Section "Device"
            Identifier  "Videocard1"
            Driver      "radeon"
            Screen      1
    EndSection
    
    ################################################################################
    # Screens: I would like to have one large desktop that spans both monitors,
    # but when an application is maximized it would expand to fill just the monitor
    # on which it is displayed.
    ################################################################################
    
    Section "Screen"
            Identifier "Screen0"
            Device     "Videocard0"
            Monitor    "Monitor0"
            DefaultDepth     24
            SubSection "Display"
                    Viewport   0 0
                    Depth     24
                    Modes     "1440x900"
            EndSubSection
    EndSection
    
    Section "Screen"
            Identifier "Screen1"
            Device     "Videocard1"
            Monitor    "Monitor1"
            DefaultDepth     24
            SubSection "Display"
                    Viewport   0 0
                    Depth     24
                    Modes     "1440x900"
            EndSubSection
    EndSection

  2. #2
    Just Joined!
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    Hello
    What is your question?

  3. #3
    Just Joined! REVEREND_FLIBBLE's Avatar
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    sorry of being unclear;

    How do i get dual monitors working w/ my graphics card?

    the dual monitor xorg file above does not work

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  5. #4
    Just Joined!
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    Hello again

    1.) Graphic card has two dvi outlets: For one outlet you need a vga adapter.
    I guess, your monitor1 has a vga plug, as well: Otherwise just get a adapter-plug.
    Dvi, is probably no big issue...
    Each monitor needs to be plugged to the bus bar, as well.

    2.) Get a fresh default xorg.conf file.

    3.) To run spanned view, use Xinerama.

    4.) Try to get your xorg.conf file configured via:
    Example: The "SimplyMEPIS" operaton system has a "Mepis X-window Assistant". There, you could use the "monitor configs" card, and your xorg.conf file would get configured, (You can also configure your Nvidia or ATI driver, there.)

    Please update us. Tell us about your progress/achievments.

    Kind regards.

  6. #5
    Just Joined! REVEREND_FLIBBLE's Avatar
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    I reverted to my default xorg file and then added xinerama and dual monitors,


    while i have compiz-fusion enabled and xinerama the whole screen becomes white, and i cannot see anything, though i can rotate the cube (which stays white)

    I tried using the tools and re-writing a xorg file withought compiz-fusion, and one of my screens shows what was last in run level 3 and the other shows a single screen layout for run level 5.

    Also one of my video card outputs is VGA and the other is DVI, the Hanns-G lcd takes either input so i use both without adapter (on card side)

    ...


    also sorry for not getting back for a while

  7. #6
    Linux Guru
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    Córdoba (Spain)
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    I've only had bad experiences with the many dozens of ATi cards that I have tried.

    For single head it's just complicated and painful to get it working. For two heads I consider it a lost cause. Even when I could get them working (with the recent fixes for xinerama) they are still unusable due to system hangs and lots of other funny bugs.

    Probably not what you wanted to hear, but for dual heads at least, I would just stick with nVidia or Intel for the time being.

  8. #7
    Just Joined! REVEREND_FLIBBLE's Avatar
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    installing fglrx drivers

    so how do i best install the fglrx drivers so that i don't use two drivers at once

  9. #8
    Linux Newbie
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    I too have been struggling with xorg files to get dual monitors working for the last 6 months - until today. I downloaded the newest ATI Driver and used Catalyst Control Center to configure dual monitors.

    ATI Catalyst™ 8.11 Proprietary Linux x86_64 Display Driver - For Intel® EM64T and AMD64 Platform Architecture

    There is no need to use SaX2 or edit xorg.conf files. The ATI Catalyst Control Center GUI allows you to set up dual monitors with ease. I have the Radeon HD 2400 Pro card.


    -Mike
    Suse Linux Enterprise Server 11
    Suse Linux Enterprise Server 10 - SP3
    OpenSuse 11.2, KDE 4.3.1

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