You can experiment
with this dynamic reconfiguration capability using the xrandr
utility.
Although the configuration process is similar for each card, the option names vary.
Here is a description the process for the options that you will need in the Device
section:
1. Enable the driver:
2. Set the second monitor??™s horizontal synchronization and vertical refresh rates
(the first monitor??™s rates are set with the normal HSync and VRefresh entries):
3. Set the relative CRT positions:
NVIDIA Option "TwinView"
radeon Option "MergedFB"
fglrx Option "DesktopSetup" "0x00000200" if connector 1 is connected to the
monitor on the left, or Option "DesktopSetup" "0x00000201" if connector 1
is connected to the monitor on the right
NVIDIA Option "SecondMonitorHorizSync" "range"
Option "SecondMonitorVertRefresh" "range"
radeon Option "CRT2HSync" "range"
Option "CRT2VRefresh" "range"
fglrx Option "HSync2" "range"
Option "VRefresh2" "range"
NVIDIA Option "TwinViewOrientation" "position" where position is Above,
Below, LeftOf, or RightOf; or use the MetaModes option (see step 4)
radeon Option "CRT2Position" "position" where position is Above, Below,
LeftOf, or RightOf
fglrx Controlled by the DesktopSetup option
4.
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