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Old 07-01-2011, 05:36 PM   #1
buckprivatemil
LQ Newbie
 
Registered: May 2011
Posts: 6

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How to clone Radeon on DisplayLink?


I want to clone my Radeon display to my DisplayLink display. The word "clone" does not appear in 'man xorg.conf'. (Neither does "projector").

The hardware is a Radeon HD3200 and a J-Tech Digital JTD USBHDMIA (DisplayLink device). I am able to set this up such that the DisplayLink can be placed Above or Below (etc) the Radeon. I am not able to configure the DisplayLink to clone the Radeon, which is what is desired. What happens with the configuration as outlined below is that the DisplayLink has focus and displays as expected, but the Radeon does not mimic/echo/clone the DisplayLink display. Neither is it possible to get focus to the Radeon display.

Although there are proprietary drivers for the Radeon HD3200, they HATE the DisplayLink, so the kernel (2.6.38.I_Forget) driver is used instead. If it matters, I use xfce4 on Slackware64 (current as of 27 June 2011).

What needs to be done to make the DisplayLink act like a projector, displaying the same thing as the Radeon display, and while the Radeon display has focus?

xorg.conf outline:
Section "ServerLayout"
Identifier "dual"
Screen "Grandbeing"
Screen "Laptop"
EndSection

Section "Device"
Identifier "DisplayLinkDevice"
Driver "displaylink"
Option "fbdev" "/dev/fb0"
Screen 0
EndSection

Section "Screen"
Identifier "Grandbeing"
Device "DisplayLinkDevice"
Monitor "Mitsubishi"
SubSection "Display"
Modes "1920x1080"
EndSubSection
EndSection

Section "Monitor"
Identifier "Mitsubishi"
HorizSync 67.5
VertRefresh 60.0
EndSection

Section "Device"
Identifier "HD3200"
Driver "radeon"
BusID "PCI:1:5:0"
EndSection

Section "Screen"
Identifier "Laptop"
Device "HD3200"
Monitor "Samsung"
DefaultDepth 24
SubSection "Display"
Depth 24
Virtual 1024 768
Modes "1024x768"
EndSubSection
EndSection

Section "Monitor"
Identifier "Samsung"
HorizSync 54.7
VertRefresh 60.0
Option "Primary" "Yes"
EndSection

Section "DRI"
Mode 0666
EndSection
--
buck
 
  


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