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View Full Version : [xubuntu] Attempting to get dual-head working with Radeon 320M



hellion0
August 23rd, 2009, 08:45 PM
I'm having problems trying to get dual-head to work with my laptop's video card, an ATI IGP320M, also known as a Radeon Mobility U1. So far, I've managed to get a resolution of 2048x768 and a partial dual-screen effect... but with only one monitor, as the second is nowhere to be found. I'm running Xubuntu Jaunty with the "free" ATI drivers, if that helps.

My xorg.conf:

Section "Device"
Identifier "ATI 1"
Option "Monitor-VGA-0" "Monitor 1"
Option "Monitor-LVDS" "Monitor 2"
EndSection

Section "Monitor"
Identifier "Monitor 1"
Option "LeftOf" "Monitor 2"
EndSection

Section "Monitor"
Identifier "Monitor 2"
EndSection

Section "Screen"
Identifier "Screen 1"
Monitor "Monitor 1"
Device "ATI 1"
SubSection "Display"
Depth 16
# virtual screen to place
Virtual 2048 768
EndSubSection
EndSection

Output from xrandr:

Screen 0: minimum 320 x 200, current 2048 x 768, maximum 2048 x 1024
VGA-0 connected 1024x768+0+0 (normal left inverted right x axis y axis) 304mm x 228mm
1024x768 60.0*+ 75.0 70.1 60.0*
832x624 74.6
800x600 72.2 75.0 60.3 56.2
640x480 75.0 72.8 66.7 59.9
720x400 70.1
LVDS connected 1024x768+1024+0 (normal left inverted right x axis y axis) 285mm x 214mm
1024x768 60.0*+
800x600 59.9
640x480 59.4
S-video disconnected (normal left inverted right x axis y axis)

Only the built-in screen on the laptop (the right screen) works, even though the machine can apparently see both monitors. Please help.