Same issue on Dell Studio 1557.
Command stated earlier fixes this issue.
xinput set-int-prop "SynPS/2 Synaptics TouchPad" "Synaptics Two-Finger Pressure" 32 40
Same issue on Dell Studio 1557.
Command stated earlier fixes this issue.
xinput set-int-prop "SynPS/2 Synaptics TouchPad" "Synaptics Two-Finger Pressure" 32 40