I hve installed the ATi config and propriatory drivers for this card. To Date I have not benn able to get an xorg.conf tha does anything but hang trying to run dual monitors. My latest attempt is pasted below:
# /.../
# SaX generated X11 config file
# Created on: 2011-05-09T07:21:08-0600.
#
# Version: 8.1
# Contact: Marcus Schaefer <sax@suse.de>, 2005
# Contact: SaX-User list <https://lists.berlios.de/mailman/listinfo/sax-users>
#
# Automatically generated by [ISaX] (8.1)
# PLEASE DO NOT EDIT THIS FILE!
#


Section "Files"
InputDevices "/dev/gpmdata"
InputDevices "/dev/input/mice"
FontPath "/usr/share/fonts/misc:unscaled"
FontPath "/usr/share/fonts/local"
FontPath "/usr/share/fonts/75dpi:unscaled"
FontPath "/usr/share/fonts/100dpi:unscaled"
FontPath "/usr/share/fonts/Type1"
FontPath "/usr/share/fonts/URW"
FontPath "/usr/share/fonts/Speedo"
FontPath "/usr/share/fonts/PEX"
FontPath "/usr/share/fonts/cyrillic"
FontPath "/usr/share/fonts/latin2/misc:unscaled"
FontPath "/usr/share/fonts/latin2/75dpi:unscaled"
FontPath "/usr/share/fonts/latin2/100dpi:unscaled"
FontPath "/usr/share/fonts/latin2/Type1"
FontPath "/usr/share/fonts/latin7/75dpi:unscaled"
FontPath "/usr/share/fonts/baekmuk:unscaled"
FontPath "/usr/share/fonts/japanese:unscaled"
FontPath "/usr/share/fonts/kwintv"
FontPath "/usr/share/fonts/truetype"
FontPath "/usr/share/fonts/uni:unscaled"
FontPath "/usr/share/fonts/CID"
FontPath "/usr/share/fonts/ucs/misc:unscaled"
FontPath "/usr/share/fonts/ucs/75dpi:unscaled"
FontPath "/usr/share/fonts/ucs/100dpi:unscaled"
FontPath "/usr/share/fonts/hellas/misc:unscaled"
FontPath "/usr/share/fonts/hellas/75dpi:unscaled"
FontPath "/usr/share/fonts/hellas/100dpi:unscaled"
FontPath "/usr/share/fonts/hellas/Type1"
FontPath "/usr/share/fonts/misc/sgi:unscaled"
FontPath "/usr/share/fonts/xtest"
FontPath "/opt/kde3/share/fonts"
EndSection

Section "Module"
Load "dri"
Load "dbe"
Load "freetype"
Load "extmod"
Load "glx"
EndSection

Section "ServerFlags"
Option "AllowMouseOpenFail" "on"
Option "ZapWarning" "on"
EndSection

Section "InputDevice"
Identifier "Keyboard[0]"
Driver "kbd"
Option "Protocol" "Standard"
Option "XkbLayout" "us"
Option "XkbModel" "microsoftpro"
Option "XkbRules" "xfree86"
EndSection

Section "InputDevice"
Identifier "Mouse[1]"
Driver "mouse"
Option "Buttons" "13"
Option "Device" "/dev/input/mice"
Option "Name" "Microsoft? Nano Transceiver v2.0"
Option "Protocol" "explorerps/2"
Option "Vendor" "Sysp"
Option "ZAxisMapping" "4 5"
EndSection

Section "Modes"
Identifier "Modes[0]"
ModeLine "1600x1200" 202.0 1600 1664 1856 2160 1200 1201 1204 1250 +hsync +vsync
EndSection

Section "Monitor"
Identifier "aticonfig-Monitor Monitor[0]"
VendorName "HTC"
ModelName "HITACHI CM771"
UseModes "Modes[0]"
DisplaySize 360 270
HorizSync 30.0 - 96.0
VertRefresh 43.0 - 160.0
Option "CalcAlgorithm" "XServerPool"
Option "DPMS"
Option "PreferredMode" "1600x1200"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
EndSection

Section "Monitor"
Identifier "aticonfig-Monitor[0]-1"
VendorName "HTC"
ModelName "HITACHI CM771"
UseModes "Modes[0]"
DisplaySize 360 270
HorizSync 30.0 - 96.0
VertRefresh 43.0 - 160.0
Option "CalcAlgorithm" "XServerPool"
Option "DPMS"
Option "PreferredMode" "1600x1200"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
EndSection

Section "Device"
Identifier "Device[0]"
Driver "fbdev"
VendorName "VESA"
BoardName "Framebuffer Graphics"
EndSection

Section "Device"
Identifier "aticonfig-Device[0]-0"
Driver "fglrx"
BusID "PCI:2:0:0"
EndSection

Section "Device"
Identifier "aticonfig-Device[0]-1"
Driver "fglrx"
BusID "PCI:2:0:0"
Screen 1
EndSection


Section "Screen"
Identifier "aticonfig-Screen[0]-0"
Device "aticonfig-Device[0]-0"
Monitor "aticonfig-Monitor[0]-0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection

Section "Screen"
Identifier "aticonfig-Screen[0]-1"
Device "aticonfig-Device[0]-1"
Monitor "aticonfig-Monitor[0]-1"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection

Section "ServerLayout"
Identifier "Layout[all]"
Screen 0 "aticonfig-Screen[0]-0" 0 0
Screen "aticonfig-Screen[0]-1" RightOf "aticonfig-Screen[0]-0"
InputDevice "Keyboard[0]" "CoreKeyboard"
InputDevice "Mouse[1]" "CorePointer"
Option "Clone" "off"
Option "Xinerama" "on"
EndSection

Section "DRI"
Group "video"
Mode 0660
EndSection

Any assistance would be appreciated

Do not use xinerama. Create an xorg.conf that runs one monitor, and then use 'xrandr' to enable and position the second monitor.

Adam

1 members found this post helpful.

xrandr appears to only see one output but the radeon Hd 5700 has two dvi ouputs with monitors on both

Screen 0: minimum 1600 x 1200, current 1600 x 1200, maximum 1600 x 1200
default connected 1600x1200+0+0 0mm x 0mm
1600x1200 77.0*

Please show us the new xorg.conf file you created and the corresponding /var/log/Xorg.0.log file, too. When posting them here, please use [code][/code] tags.

Adam

May I ask why you don't simpy use the ATI Catalyst Control Center that you have installed, instead of usin Sax or xrandr? Should be the easiest way to setup dual monitor.

Hi I have a similar problem. lspci shows two ATI Radeon 5700 cards. I have connected monitors to both outlets. However only one works. And as the other person said, I also installed the ATI Catalyst Control Center. For some reason, in the Display Manager there, it shows the second monitor as a "[Unknown Display] Unknown adapter". Any ideas? Has anyone fixed this already? (I am using Linux Mint 12)