Dual monitor is not working on 3.6.11-4.fc16.i686.PAE?
 

$sudo lspci | grep -ir vga 00:02.0 VGA compatible controller: Intel Corporation Device 0162
However, the xrandr doesn't show the other monitor.
sudo xrandr Screen 0: minimum 320 x 200, current 1366 x 768, maximum 8192 x 8192 VGA1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 410mm x 230mm 1366x768 59.8*+ 1360x768 60.0
1280x800 59.8
1280x768 59.9
1024x768 75.1 70.1 60.0
1024x576 60.0
800x600 72.2 75.0 60.3 56.2
848x480 60.0
640x480 72.8 75.0 60.0
720x400 70.1
HDMI1 disconnected (normal left inverted right x axis y axis) DP1 disconnected (normal left inverted right x axis y axis) HDMI2 disconnected (normal left inverted right x axis y axis) DP2 disconnected (normal left inverted right x axis y axis)


I tried using the system utility; that threw an error saying Other monitor is not detected.

How can I get it detected and make it working? Please share your views.

Check what driver is being used. VESA will not work, I think, with xrandr.

Hi,
 

The details are

sudo lspci | grep -ir vga
00:02.0 VGA compatible controller: Intel Corporation Device 0162 (rev 09)
01:00.0 VGA compatible controller: ATI Technologies Inc Device 6778


find /sys | grep drivers.*02:00
[joshis1@(none) D183]$ find /sys | grep drivers.*00:02
/sys/bus/pci/drivers/i915/0000:00:02.0
/sys/bus/pci/drivers/r8169/0000:02:02.0
[joshis1@(none) D183]$ find /sys | grep drivers.*01:0
/sys/bus/pci/drivers/snd_hda_intel/0000:01:00.1

BusID 1:00:0 is the video and 1:00:01 is the audio. so if what im thinking is right, It seems like the driver for your ATI video is not being loaded. Is the other monitor connected to ATI?

i915 is loaded for your intel card so that part is ok but no fglrx or radeon for the AMD card.

Hi,

Thanks! What I did today was;
http://support.amd.com/us/gpudownloa...eon_linux.aspx

From here, I downloaded the latest beta version.

Now, I rebooted. The first screen started showing me all the booting logs.
Before launching the login screen. I got the other screen active. The first screen just showed .. launching display manager.
And the other screen showed the login screen. I logged in and was able to use only second screen. When I pressed alt+f2 ; I was able to switch to first screen but this just showed me..launching display manager. I couldn't do anything.

My desire is to use dual monitor setup. Thus, I will be able to move my workspace items to another window.
Afterwards, I installed NVidia-config. This is also not helping me.

Nvidia??? I'm assuming this is typo coz you have AMD ATI and not NVidia.

So at least now you've seen both monitors turn on just not at the same time.

A few questions:
1.) are you using the intel card as well or both monitors on ATI card?
2.) do you have xorg.conf file?
3.) before we try number 2, try using xrandr again and see if it will show two displays now.

Thanks!
My answers for your question.

are you using the intel card as well or both monitors on ATI card?
1) I am using intel card as well.


do you have xorg.conf file?
Yes, Here is the content of xorg.conf

# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 304.60 (mockbuild@) Thu Oct 25 17:47:50 CEST 2012


Section "ServerLayout"
Identifier "aticonfig Layout"
Screen 0 "aticonfig-Screen[0]-0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
EndSection

Section "Module"
Load "glx"
EndSection

Section "InputDevice"

# generated from data in "/etc/sysconfig/keyboard"
Identifier "Keyboard0"
Driver "keyboard"
Option "XkbLayout" "us"
Option "XkbModel" "pc105"
EndSection

Section "InputDevice"

# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/input/mice"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection

Section "Monitor"
Identifier "aticonfig-Monitor[0]-0"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
EndSection

Section "Device"
Identifier "aticonfig-Device[0]-0"
Driver "nvidia"
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


3. xrandr says

Screen 0: minimum 320 x 200, current 1366 x 768, maximum 1366 x 1366
DFP1 disconnected (normal left inverted right x axis y axis)
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 disconnected (normal left inverted right x axis y axis)
CRT1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 410mm x 230mm
1366x768 59.8*+
1280x1024 75.0
1280x960 75.0
1360x768 59.8
1280x768 75.0 59.8
1280x720 75.0 59.8
1024x768 75.0 60.0
800x600 75.0 60.3
640x480 75.0 59.9

Sorry, The xorg.conf file content is

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 "Device"
Identifier "aticonfig-Device[0]-0"
Driver "fglrx"
BusID "PCI:1:0:0"
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

Edit your Section "ServerLayout" and add:
Screen "Screen1" RightOf "aticonfig-Screen[0]-0"

Also add these for you second card, monitor and screen:

Section "Device"
Identifier "Intel"
Driver "i915"
BusID "PCI:0:02:0
EndSection

Section "Monitor"
Identifier "Monitor1"
Option "DPMS" "true"
EndSection

Section "Screen"
Identifier "Screen1"
Device "Intel"
Monitor "Monitor1"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection

Section "ServerFlags"
Option "Xinerama" "on" #This is so you can move windows from screen to screen
EndSection

And finally, on your first Section "Screen", add this under SubSection "Display":
Virtual 2560 1024 #This is if you have two 1280x1024 monitors.