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Thread: 1 big display on 4 monitors via 2 cards - HD 5750 fglrx

  1. #1
    Join Date
    May 2010
    Posts
    1

    Default 1 big display on 4 monitors via 2 cards - HD 5750 fglrx

    So all morning I've been trying to get this 4 pack of monitors to display a huge screen. This is my first attempt at using the ATI proprietary drivers. The attached photo is closest i've gotten to get all monitors to do anything. Dual monitors seems to be a piece of cake, but going to three or more is not so easy.



    I have two HD 5750's and 4 dell monitors. I'm running on Ubuntu 10.04 x64 using ati-driver-installer-10-4-x86.x86_64 drivers downloaded from ATI.

    lspci shows...

    Code:
    01:00.0 VGA compatible controller: ATI Technologies Inc Juniper [Radeon HD 5700 Series]
    01:00.1 Audio device: ATI Technologies Inc Juniper HDMI Audio [Radeon HD 5700 Series]
    06:00.0 VGA compatible controller: ATI Technologies Inc Juniper [Radeon HD 5700 Series]
    06:00.1 Audio device: ATI Technologies Inc Juniper HDMI Audio [Radeon HD 5700 Series]
    aticonfig --lsa returns...

    Code:
    * 0. 06:00.0 ATI Radeon HD 5700 Series
      1. 01:00.0 ATI Radeon HD 5700 Series
    I've tried all kind of combinations of "aticonfig --initial --heads=4 --adapter=1".

    Here's my /etc/X11/xorg.conf file (which currently is just producing 4 black screens.

    Code:
    Section "ServerLayout"
            Identifier     "aticonfig Layout"
            Screen      0  "aticonfig-Screen[1]-0" 0 0
            Screen      1  "aticonfig-Screen[2]-0" 0 0
    EndSection
    
    Section "Files"
    EndSection
    
    Section "Module"
    EndSection
    
    Section "ServerFlags"
            Option      "Xinerama" "off"
    EndSection
    
    Section "Monitor"
            Identifier   "aticonfig-Monitor[1]-0"
            Option      "VendorName" "ATI Proprietary Driver"
            Option      "ModelName" "Generic Autodetecting Monitor"
            Option      "DPMS" "true"
    EndSection
    
    Section "Monitor"
            Identifier   "aticonfig-Monitor[2]-0"
            Option      "VendorName" "ATI Proprietary Driver"
            Option      "ModelName" "Generic Autodetecting Monitor"
            Option      "DPMS" "true"
    EndSection
    
    Section "Device"
            Identifier  "aticonfig-Device[1]-0"
            Driver      "fglrx"
            BusID       "PCI:1:0:0"
    EndSection
    
    Section "Device"
            Identifier  "aticonfig-Device[2]-0"
            Driver      "fglrx"
            BusID       "PCI:6:0:0"
    EndSection
    
    Section "Screen"
            Identifier "aticonfig-Screen[1]-0"
            Device     "aticonfig-Device[1]-0"
            Monitor    "aticonfig-Monitor[1]-0"
            DefaultDepth     24
            SubSection "Display"
                    Viewport   0 0
                    Depth     24
            EndSubSection
    EndSection
    
    Section "Screen"
            Identifier "aticonfig-Screen[2]-0"
            Device     "aticonfig-Device[2]-0"
            Monitor    "aticonfig-Monitor[2]-0"
            DefaultDepth     24
            SubSection "Display"
                    Viewport   0 0
                    Depth     24
            EndSubSection
    EndSection
    I'm hoping to be able to have 1 large desktop that I can drag windows from one monitor to the next.

    Can anyone help?

  2. #2
    Join Date
    Dec 2008
    Location
    Australia
    Posts
    880

    Default

    Quote Originally Posted by evildead007 View Post
    So all morning I've been trying to get this 4 pack of monitors to display a huge screen.
    The first thing to do would be to focus on getting one card setup with two screens via "bigdesktop"

    Then I'd replicate that for the second card.

    Once both cards are setup you'll only be able to get each card into the same desktop with Xinerama enabled. I noticed it's disabled in your xorg.conf

    Code:
    Section "ServerFlags"
            Option      "Xinerama" "off"
    EndSection

  3. #3
    Join Date
    Oct 2007
    Location
    Toronto-ish
    Posts
    7,405

    Default

    Tru running something like :

    aticonfig --initial=dual-head --adapter=all -f
    Then start/restart X.

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