Dual Monitor Issues

[Antipex]

I have a dual-head Radeon 9800 and I haven't been able to get dual monitors to work properly - they mirror each other instead of spanning, no matter what I set in the display settings utility under the dual head section. I've tried changes to my xorg.conf file, but nothing seems to work - they always mirror each other. Here's a link to my xorg.conf file:

xorg.conf (http://www.antipex.com/xorg.conf)

Any help would be greatly appreciated - I hate using a single monitor! :eek:

[imdeemvp]

are this regular crt or lcd monitors?

[Antipex]

Both CRTs.

[imdeemvp]

has you video card been configured properly???

[Antipex]

has you video card been configured properly???

OMG...I posted my config file...it's obviously working because both monitors are mirroed - i just need them to act as one spanned desktop! Can anyone please help???

[imdeemvp]

i found this thread and they also posted their xorg.conf i am posting from work with very litte time to concentrate on this topic....

i just hope you can study it more than me: http://home.swiftdsl.com.au/~rbirdman/monitor.html

[Antipex]

Thanks, but I'm still having problems :( This is really frustrating.

[Antipex]

Anyone out there have any idea? I'm sick of Windows...

[nerd]

Try this one (if you haven't given up yet.)

[Antipex]

I just found in my Xorg.log file where it says:

(WW) RADEON(1): Only one monitor detected, Second screen will NOT be created

I think this must be the problem...though how do I fix it??

[ebachalo]

I had same problem with my Radeon 7000. To fix the problem I added:
Option "MonitorLayout" "CRT,CRT"
to the first "Device". i.e. complere first Device Section is:

Section "Device"
Identifier "Videocard0"
Driver "radeon"
VendorName "Videocard vendor"
BoardName "ATI Radeon 7000"
Option "MonitorLayout" "CRT,CRT"
EndSection

Hope this helps you. It fixed my problem.

[triplehead]

you are referring to screen 0 and screen 1 but on Device section you have it like this

Section "Device"
Identifier "Videocard0"
Driver "radeon"
VendorName "Videocard vendor"
BoardName "ATI Radeon 9800"
EndSection

Section "Device"
Identifier "Videocard1"
Driver "radeon"
VendorName "Videocard Vendor"
BoardName "ATI Radeon 9800"
BusID "PCI:3:0:0"
Screen 1
EndSection

so i thnk you are missing
BusID "PCI:3:0:0"
Screen 0
lines from the first one

[faddy]

Hi I found this thread when I was trying to get my Radeon 7000 (one DVI output spread to two VGA inputs) and I finally found a solution using the xorg device driver option below.
Section "Device"
.....
Option "DDCMode" "on"
Option "MergedFB" "on"
BusID "PCI:1:0:0"
Option "CRT2Position" "LeftOf"
......
EndSection

Before the solution I was getting clone mode all of the time no matter what ever else I did.
Below is the full xorg.conf.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
# Xorg configuration created by system-config-display

Section "ServerLayout"
Identifier "Multihead layout"
Screen 0 "Screen0" LeftOf "Screen1"
Screen 1 "Screen1" 0 0
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
Option "Xinerama" "on"
Option "Clone" "off"
EndSection

Section "Files"

# RgbPath is the location of the RGB database. Note, this is the name of the
# file minus the extension (like ".txt" or ".db"). There is normally
# no need to change the default.
# Multiple FontPath entries are allowed (they are concatenated together)
# By default, Red Hat 6.0 and later now use a font server independent of
# the X server to render fonts.
RgbPath "/usr/X11R6/lib/X11/rgb"
FontPath "unix/:7100"
EndSection

Section "Module"
Load "dbe"
Load "extmod"
Load "fbdevhw"
Load "glx"
Load "record"
Load "freetype"
Load "type1"
Load "dri"
EndSection

Section "InputDevice"

# Specify which keyboard LEDs can be user-controlled (eg, with xset(1))
# Option "Xleds" "1 2 3"
# To disable the XKEYBOARD extension, uncomment XkbDisable.
# Option "XkbDisable"
# To customise the XKB settings to suit your keyboard, modify the
# lines below (which are the defaults). For example, for a non-U.S.
# keyboard, you will probably want to use:
# Option "XkbModel" "pc102"
# If you have a US Microsoft Natural keyboard, you can use:
# Option "XkbModel" "microsoft"
#
# Then to change the language, change the Layout setting.
# For example, a german layout can be obtained with:
# Option "XkbLayout" "de"
# or:
# Option "XkbLayout" "de"
# Option "XkbVariant" "nodeadkeys"
#
# If you'd like to switch the positions of your capslock and
# control keys, use:
# Option "XkbOptions" "ctrl:swapcaps"
# Or if you just want both to be control, use:
# Option "XkbOptions" "ctrl:nocaps"
#
Identifier "Keyboard0"
Driver "kbd"
Option "XkbModel" "pc105"
Option "XkbLayout" "gb"
EndSection

Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "IMPS/2"
Option "Device" "/dev/input/mice"
Option "ZAxisMapping" "4 5"
Option "Emulate3Buttons" "yes"
EndSection

Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "L66"
DisplaySize 360 290
HorizSync 27.0 - 80.0
VertRefresh 50.0 - 75.0
Option "dpms"
EndSection

Section "Monitor"
Identifier "Monitor1"
VendorName "Monitor Vendor"
ModelName "L66"
HorizSync 27.0 - 80.0
VertRefresh 50.0 - 75.0
Option "dpms"
EndSection

Section "Device"
Identifier "Videocard0"
Driver "radeon"
VendorName "Videocard vendor"
BoardName "ATI Radeon 7000"
Option "DDCMode" "on"
Option "MergedFB" "on"
BusID "PCI:1:0:0"
Option "CRT2Position" "LeftOf"
Screen 0
EndSection

Section "Device"
Identifier "Videocard1"
Driver "radeon"
VendorName "Videocard Vendor"
BoardName "ATI Radeon 7000"
Screen 1
EndSection

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1280x1024" "1280x960" "1152x864" "1024x768" "800x600" "640x480"
EndSubSection
EndSection

Section "Screen"
Identifier "Screen1"
Device "Videocard1"
Monitor "Monitor1"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1280x1024"
EndSubSection
EndSection

Section "DRI"
Group 0
Mode 0666
EndSection
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

I hope it helps
;-)