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Quad Head Setup - Nearly Working - ZaphodHeads Problem?

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  • Quad Head Setup - Nearly Working - ZaphodHeads Problem?

    I have 2 GTX 280 cards.
    Each card has 2 DVI outputs.

    With the configuration below my left 2 monitors are working but they are mirrored, and my right 2 monitors are black and also mirrored (Mouse will show up on black screens.


    Is ZaphodHeads not working properly since both graphics cards are mirroring the outputs?


    This is my XORG.CONF:
    Code:
    Section "ServerLayout"
        Identifier  "Layout0"
        Option      "Xinerama" "on"
        Option      "Clone"    "off"
        Screen   0  "Screen0"
        Screen   1  "Screen1"  RightOf "Screen0"
        Screen   2  "Screen2"  LeftOf  "Screen0"
        Screen   3  "Screen3"  LeftOf  "Screen2"
    EndSection
    
    Section "Device"
        Identifier  "Device0"
        Driver      "nouveau"
        BusID       "PCI:2:0:0"
        Option	"ZaphodHeads"	"DVI-I-1"
        Screen      0
    EndSection
    Section "Device"
        Identifier  "Device1"
        Driver      "nouveau"
        BusID       "PCI:2:0:0"
        Option	"ZaphodHeads"	"DVI-I-2"
        Screen      1
    EndSection
    Section "Device"
        Identifier  "Device2"
        Driver      "nouveau"
        BusID       "PCI:3:0:0"
        Option	"ZaphodHeads"	"DVI-I-3"
        Screen      0
    EndSection
    Section "Device"
        Identifier  "Device3"
        Driver      "nouveau"
        BusID       "PCI:3:0:0"
        Option	"ZaphodHeads"	"DVI-I-4"
        Screen      1
    EndSection
    
    Section "Screen"
        Identifier  "Screen0"
        Device      "Device0"
    EndSection
    Section "Screen"
        Identifier  "Screen1"
        Device      "Device1"
    EndSection
    Section "Screen"
        Identifier  "Screen2"
        Device      "Device2"
    EndSection
    Section "Screen"
        Identifier  "Screen3"
        Device      "Device3"
    EndSection
    My Xorg Log:

  • #2
    Are you sure the heads are called "DVI-I-1" to "DVI-I-4" and not "DVI-I-0" and "DVI-I-1" two times (for each card)? And are they even called "DVI-I-X" and not "DVI-X"?

    Comment


    • #3
      Originally posted by droste View Post
      Are you sure the heads are called "DVI-I-1" to "DVI-I-4" and not "DVI-I-0" and "DVI-I-1" two times (for each card)? And are they even called "DVI-I-X" and not "DVI-X"?
      I had the same question. So I tried all possible combinations. Still no luck!

      When I go to the directory: /sys/class/drm
      The folders read: "card0-DVI-I-1"

      Comment


      • #4
        Originally posted by Pwnm30rdi3 View Post
        I had the same question. So I tried all possible combinations. Still no luck!

        When I go to the directory: /sys/class/drm
        The folders read: "card0-DVI-I-1"
        AFAIK you have to use the names provided by X (run 'xrandr' in terminal to see what they are called) not the kernel ones in the ZaphodHead config

        Comment


        • #5
          Originally posted by droste View Post
          AFAIK you have to use the names provided by X (run 'xrandr' in terminal to see what they are called) not the kernel ones in the ZaphodHead config
          Code:
          andrew@andrewcomp:~$ sudo xrandr
          [sudo] password for andrew: 
          RandR extension missing
          andrew@andrewcomp:~$

          Comment


          • #6
            There are xserver installed without this extension? o_O

            Check Xorg.log there's probably something like this:
            "(II) RADEON(0): EDID for output DVI-0"
            for nouveau too.

            Comment


            • #7
              Originally posted by droste View Post
              There are xserver installed without this extension? o_O

              Check Xorg.log there's probably something like this:
              "(II) RADEON(0): EDID for output DVI-0"
              for nouveau too.
              Xorg.log shows:
              (II) NOUVEAU(0): EDID for output DVI-I-1

              Here is my Xorg.log:
              http://pastebin.com/raw.php?i=SFLZ71ys
              Last edited by Pwnm30rdi3; 11-16-2012, 12:46 PM.

              Comment


              • #8
                @Pwnm30rdi3

                NEVER use sudo for xrandr!

                Comment


                • #9
                  Originally posted by Kano View Post
                  @Pwnm30rdi3

                  NEVER use sudo for xrandr!
                  Thank you!
                  I am a bit new at this!

                  This is frustrating. I'm going on day 4 of improperly working monitors.

                  Comment


                  • #10
                    The problem seems to be this:

                    Code:
                    [    14.033] (EE) Screen 1 deleted because of no matching config section.
                    [    14.033] (II) UnloadModule: "nouveau"
                    [    14.033] (EE) Screen 2 deleted because of no matching config section.
                    [    14.033] (II) UnloadModule: "nouveau"
                    from the Xorg.log. But I'm not exactly sure what that means, because there is a config section for screen 1 and 2!?

                    Comment


                    • #11
                      Originally posted by droste View Post
                      The problem seems to be this:

                      Code:
                      [    14.033] (EE) Screen 1 deleted because of no matching config section.
                      [    14.033] (II) UnloadModule: "nouveau"
                      [    14.033] (EE) Screen 2 deleted because of no matching config section.
                      [    14.033] (II) UnloadModule: "nouveau"
                      from the Xorg.log. But I'm not exactly sure what that means, because there is a config section for screen 1 and 2!?
                      There might be issues with mixing the orientations. Try making sure screen 0 is at the origin. e.g.:

                      Code:
                      Section "ServerLayout"
                          Identifier  "Layout0"
                          Option      "Xinerama" "on"
                          Option      "Clone"    "off"
                          Screen   0  "Screen0"
                          Screen   1  "Screen1"  RightOf "Screen0"
                          Screen   2  "Screen2"  RightOf  "Screen1"
                          Screen   3  "Screen3"  RightOf  "Screen2"
                      EndSection
                      Alternatively, you could file a bug: https://bugs.freedesktop.org

                      Also, this post is in the wrong section. This is the open source AMD forum.

                      Comment


                      • #12
                        I'd love to play around with a distro
                        Last edited by Speirs68; 11-22-2012, 10:15 PM.

                        Comment

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