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?