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GenKreton
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Joined: 20 Sep 2003
Posts: 828
Location: Cambridge, MA

PostPosted: Wed Jan 04, 2006 9:25 pm    Post subject: modular xorg dual monitor Reply with quote

Since I have upgraded to modular xorg, I cannot get my dual monitor working on my laptop. Devices register no signal despite XFCE creating two desktops, I guess is the wording (my mouse drags off the edge of my screen whereas otherwise it would not be permitted to).

There have been no changes to my xfce, any settings, or even my xorg.conf. I achieved two desktops by the following in my xorg.conf only (I do not use any programs).

Code:

   Screen          "Laptop"
   Screen          "Desktop" rightOf "Laptop"


These options are placed in my ServerLayout section of the configuration file.

Any way I get get my dual head configuration properly working again?
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dashboard
n00b
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Joined: 24 Feb 2005
Posts: 19
Location: Portugal

PostPosted: Thu Jul 06, 2006 10:07 pm    Post subject: Reply with quote

Sorry the thread-digging, but i have the exact same problem. Since modular xorg went stable I can't seem to set up a working dual-head display.

The two displays are created (:0.0 and :0.1 - I can start apps in both), but the laptop LCD shows only black, the external CRT works flawlessly. I guess the LCD is working, because the backlight seems to be on.

Here's a snippet from my xorg.conf:
Quote:
Section "Monitor"
Identifier "Laptop Monitor"
Option "DPMS"
EndSection

Section "Monitor"
Identifier "LITEON External Monitor"
Option "DPMS"
EndSection


Section "Device"
Identifier "ATI Mobility Radeon 9700 #1"
Driver "radeon"
Option "DDCMode" "on"
Option "DPMS" "on"

Option "AGPMode" "4"
Option "AGPFastWrite" "off"
Option "EnablePageFlip" "true"
Option "IgnoreEDID" "off"
Option "RenderAccel" "on"
Option "DynamicClocks" "on"
Option "UseInternalAGPGART" "no"

Option "MonitorLayout" "LVDS, CRT"
BusID "PCI:1:0:0"
Screen 0
EndSection

Section "Device"
Identifier "ATI Mobility Radeon 9700 #2"
Driver "radeon"
BusID "PCI:1:0:0"
Option "DDCMode" "on"
Option "DPMS" "on"
Screen 1
EndSection


Section "Screen"
Identifier "Laptop Screen"
Device "ATI Mobility Radeon 9700 #1"
Monitor "Laptop Monitor"
DefaultDepth 24

Subsection "Display"
Depth 24
Modes "1280x800" "1024x768" "800x600" "640x480"
ViewPort 0 0 # initial origin if mode is smaller than desktop
EndSubsection
EndSection

Section "Screen"
Identifier "LITEON Screen"
Device "ATI Mobility Radeon 9700 #2"
Monitor "LITEON External Monitor"
DefaultDepth 24

Subsection "Display"
Depth 24
Modes "1280x1024" "1024x768" "800x600"
ViewPort 0 0
EndSubsection
EndSection

Section "ServerLayout"
Identifier "liteon"
Screen "Laptop Screen"
Screen "LITEON Screen" LeftOf "Laptop Screen"
InputDevice "Mouse" "CorePointer"
InputDevice "Keyboard" "CoreKeyboard"
EndSection


Any thoughts on this?
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dashboard
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Joined: 24 Feb 2005
Posts: 19
Location: Portugal

PostPosted: Sat Jul 08, 2006 1:17 pm    Post subject: Reply with quote

OK, I think I kind of solved this one. The only way of getting both screens to work is by plugging the external CRT only after the framebuffer is set on the laptop monitor, otherwise only the CRT screen will show images (the laptop will remain black). Not a neat solution, but at least it works now :)
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