I'm observing this problem on a Dell Vostro V13 with Oneiric.
The comments of bug #327428 mention that there is an option configurable
through xinput that should disable the scaling, but either it doesn't work or I
am not using xinput properly:
gpothier@tadzim:adkintun$ xinput --list-props 12 |grep 'Resolution Detect'
Synaptics Resolution Detect (305): 1
gpothier@tadzim:adkintun$ xinput --set-prop 12 305 0
gpothier@tadzim:adkintun$ xinput --list-props 12 |grep 'Resolution Detect'
Synaptics Resolution Detect (305): 0
Where device 12 is my touchpad:
gpothier@tadzim:adkintun$ xinput --list |grep Touch
⎜ ↳ SynPS/2 Synaptics TouchPad id=12 [slave pointer (2)]
So it does look like I successfully disabled the option, but I cannot
see any change in touchpad behavior (horizontal sensitivity is still
about 3 times as much as vertical sensitivity).
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https://bugs.launchpad.net/bugs/591954
Title:
Touchpad aspect ratio changes with TwinView
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