Dual Radeon video card -- Second card Unknown/4th monitor

My initial plan was to use four monitors on my Radeon HD 6790 as follows:
1 Single-link DVI-D = monitor1 dvi
1 Dual-link DVI-I = monitor2 dvi
1 Display Port = monitor3 dvi with adapter
1 HDMI = new monitor
This did not work as I could not use the hdmi port with the second dvi plugged in so I decided to buy a second cheaper ati card (the 6450) to power the fourth monitor. Well of course that did not work as well since the 2nd video card was identified as UNKNOWN via the Ctalyst control Center(amdcccle).
This is how I currently have my monitors plugged in:
6790 (Main card):
1x dvi
1x dvi via DisplayPort
1x hdmi
6450 (Secondary card):
1x dvi
I tried for two days to get the second card identified by the Catalyst driver and I ended up borking my system in the process. So now I am on week two of getting this setup to work with no avail so I decided to post a new thread.
Here is some relevant information that may help:
╔═ comhack@Cerberus 11:14 AM
╚═══ ~-> uname -a
Linux Cerberus 3.3.7-1-ARCH #1 SMP PREEMPT Tue May 22 00:26:26 CEST 2012 x86_64 GNU/Linux
╔═ comhack@Cerberus 10:50 AM
╚═══ ~-> lspci | grep VGA
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Barts LE [AMD Radeon HD 6700 Series]
02:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Caicos [Radeon HD 6450]
╔═ comhack@Cerberus 11:50 AM
╚═══ ~-> pacman -Qi xorg-server | grep Version
Version : 1.11.4-1
╔═ comhack@Cerberus 10:50 AM
╚═══ ~-> xrandr
Screen 0: minimum 320 x 200, current 5440 x 1084, maximum 5440 x 1920
DFP1 connected 1600x900+3840+0 (normal left inverted right x axis y axis) 443mm x 249mm
1600x900 60.0*+
1440x900 60.0
1280x800 59.8
1152x864 75.0 60.0
1280x768 59.8
1280x720 60.0
1024x768 75.0 70.1 60.0
800x600 72.2 75.0 60.3 56.2
640x480 75.0 72.8 67.0 59.9
DFP2 disconnected (normal left inverted right x axis y axis)
DFP3 disconnected (normal left inverted right x axis y axis)
DFP4 disconnected (normal left inverted right x axis y axis)
DFP5 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 520mm x 290mm
1920x1080 60.0*+ 50.0 59.9 30.0 25.0 30.0
1600x1200 60.0
1776x1000 50.0 59.9 25.0 30.0
1680x1050 50.0 60.0
1400x1050 50.0 60.0
1600x900 60.0 50.0
1360x1024 50.0 60.0
1280x1024 50.0 75.0 60.0
1440x900 50.0 59.9
1280x960 50.0 60.0
1152x864 50.0 59.9 75.0
1280x768 50.0 60.0
1280x720 60.0 50.0 59.9
1024x768 50.0 75.0 70.1 60.0
1152x648 50.0 59.9
800x600 50.0 72.2 75.0 60.3 56.2
720x480 50.0 30.0 60.0 30.0 59.9
640x480 50.0 75.0 72.8 67.0 60.0 59.9
DFP6 disconnected (normal left inverted right x axis y axis)
DFP7 connected 1920x1080+0+4 (normal left inverted right x axis y axis) 477mm x 268mm
1920x1080 60.0*+
1680x1050 60.0
1400x1050 60.0
1600x900 60.0
1360x1024 60.0
1280x1024 75.0 60.0
1440x900 59.9
1280x960 60.0
1280x768 60.0
1280x720 60.0
1024x768 75.0 70.1 60.0
800x600 72.2 75.0 60.3 56.2
640x480 75.0 72.8 67.0 59.9
CRT1 disconnected (normal left inverted right x axis y axis)
╔═ comhack@Cerberus 11:02 AM
╚═══ ~/Cerberus-> pacman -Qi catalyst-total | grep Version
Version : 12.4-1
Here is my atisysteminfo: https://github.com/securitybreach/Cerbe … report.txt
My xorg.conf:
Section "ServerLayout"
Identifier "amdcccle Layout"
Screen 0 "amdcccle-Screen[1]-0" 0 0
EndSection
Section "Monitor"
Identifier "0-DFP1"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1600x900"
Option "TargetRefresh" "60"
Option "Position" "3840 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection
Section "Monitor"
Identifier "0-DFP5"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1920x1080"
Option "TargetRefresh" "60"
Option "Position" "1920 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection
Section "Monitor"
Identifier "0-DFP7"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1920x1080"
Option "TargetRefresh" "60"
Option "Position" "0 28"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection
Section "Monitor"
Identifier "1-Default monitor"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "480x640"
Option "TargetRefresh" "60"
Option "Position" "0 0"
Option "Rotate" ""
Option "Disable" "false"
EndSection
Section "Monitor"
Identifier "0-DFP6"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1920x1080"
Option "TargetRefresh" "60"
Option "Position" "0 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection
Section "Device"
Identifier "amdcccle-Device[1]-0"
Driver "fglrx"
Option "Monitor-DFP1" "0-DFP1"
Option "Monitor-DFP5" "0-DFP5"
Option "Monitor-DFP6" "0-DFP6"
BusID "PCI:1:0:0"
EndSection
Section "Device"
Identifier "amdcccle-Device[2]-0"
Driver "fglrx"
Option "Monitor-Default monitor" "1-Default monitor"
BusID "PCI:2:0:0"
EndSection
Section "Screen"
Identifier "amdcccle-Screen[1]-0"
Device "amdcccle-Device[1]-0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Virtual 5440 1920
Depth 24
EndSubSection
EndSection
Section "Screen"
Identifier "amdcccle-Screen[2]-0"
Device "amdcccle-Device[2]-0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection
https://github.com/securitybreach/Cerbe … g.conf-ati
Notice the fourth monitor is labeled as "1-Default monitor" instead of hdmi (or whatever) and the second card is not listed.
I am literally at my wit's end trying to figure this out. So basically I am wondering if anyone has a clue where to begin trying to get the 2nd video card identified or is it even possible with the current Catalyst driver? I know my hardware can power it fine as it works perfectly on my Windows gaming partition.
Thanks in advance
Last edited by securitybreach (2012-06-01 16:50:47)

I have it working now using catalyst-total but with separate X sessions on each monitor. Not the ideal setup but it works for now.
Here is my xorg.conf for reference:
Section "ServerLayout"
Identifier "amdcccle Layout"
Screen 0 "amdcccle-Screen[1]-0" 1599 0
Screen "amdcccle-Screen[1]-1" 3518 0
Screen "amdcccle-Screen[1]-2" 5437 0
Screen "amdcccle-Screen[2]-0" 0 0
EndSection
Section "Monitor"
Identifier "0-DFP1"
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 "Monitor"
Identifier "0-DFP5"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1920x1080"
Option "TargetRefresh" "60"
Option "Position" "0 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection
Section "Monitor"
Identifier "0-DFP7"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1920x1080"
Option "TargetRefresh" "60"
Option "Position" "0 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection
Section "Monitor"
Identifier "1-DFP2"
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 "amdcccle-Device[1]-0"
Driver "fglrx"
Option "Monitor-DFP5" "0-DFP5"
BusID "PCI:1:0:0"
EndSection
Section "Device"
Identifier "amdcccle-Device[2]-0"
Driver "fglrx"
Option "Monitor-DFP2" "1-DFP2"
BusID "PCI:2:0:0"
EndSection
Section "Device"
Identifier "amdcccle-Device[1]-1"
Driver "fglrx"
Option "Monitor-DFP7" "0-DFP7"
BusID "PCI:1:0:0"
Screen 1
EndSection
Section "Device"
Identifier "amdcccle-Device[1]-2"
Driver "fglrx"
Option "Monitor-DFP1" "0-DFP1"
BusID "PCI:1:0:0"
Screen 2
EndSection
Section "Screen"
Identifier "amdcccle-Screen[1]-0"
Device "amdcccle-Device[1]-0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection
Section "Screen"
Identifier "amdcccle-Screen[2]-0"
Device "amdcccle-Device[2]-0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection
Section "Screen"
Identifier "amdcccle-Screen[1]-1"
Device "amdcccle-Device[1]-1"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection
Section "Screen"
Identifier "amdcccle-Screen[1]-2"
Device "amdcccle-Device[1]-2"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection
I had to manually edit my xorg.conf and add the values for the second video card/fourth monitor. I cannot figure out how to take a screenshot of all 4 X sessions so here is a picture of the setup:
Last edited by securitybreach (2012-06-03 22:49:20)

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Dual Radeon video card -- Second card Unknown/4th monitor

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