I have 3 screens that runs on 1 ati radeon hd 6870. I tried to turn of mirror mode but it gave me the following errors:
The selected configuration for displays could not be applied required virtual size does not fit available size: requested=(4800, 900), minimum=(320, 200), maximum=(1600, 1600).
Failed to apply configuration: %s GDBus.Error:org.gtk.GDBus.UnmappedGError.Quark._gnome_2drr_2derror_2dquark.Code3: required virtual size does not fit available size: requested=(4800, 900), minimum=(320, 200), maximum=(1600, 1600)
After that I installed the ati catalyst driver 12.6 and changed it in catalyst. It asks for a reboot to take effect. After the reboot it seems to work for the passwordbox is only on the main screen. But as soon as I entered my password. The main screen goes black and my kb & ms is unresponsive. I can't open a tty or anything. I updated the kernel to 3.4 but then I couldn't install the catalyst driver so I then went to 3.3.6. but it still freezes after the password is entered. I can login through tty.
Here is my xorg.conf file:
Section "ServerLayout"
Identifier "aticonfig Layout"
Screen 0 "aticonfig-Screen[0]-0" 0 0
EndSection
Section "Module"
EndSection
Section "Monitor"
Identifier "aticonfig-Monitor[0]-0"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
EndSection
Section "Monitor"
Identifier "0-DFP5"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1600x900"
Option "TargetRefresh" "60"
Option "Position" "1600 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection
Section "Monitor"
Identifier "0-DFP11"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1600x900"
Option "TargetRefresh" "60"
Option "Position" "3200 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection
Section "Monitor"
Identifier "0-DFP10"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1600x900"
Option "TargetRefresh" "60"
Option "Position" "0 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection
Section "Device"
Identifier "aticonfig-Device[0]-0"
Driver "fglrx"
Option "Monitor-DFP5" "0-DFP5"
Option "Monitor-DFP11" "0-DFP11"
Option "Monitor-DFP10" "0-DFP10"
BusID "PCI:1:0:0"
EndSection
Section "Screen"
Identifier "aticonfig-Screen[0]-0"
Device "aticonfig-Device[0]-0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Virtual 4800 1600
Depth 24
EndSubSection
EndSection
Please help. 3 mirrored displays aren't useful.