Public bug reported:
This is a summary bug, in order to avoid duplicated reports.
For Synaptics touchpad, even if the touchpad is a multitouch-supported model,
the following gestures are still not supported on 14.04
* 2-finger pinch / expand
* 3-finger tap to move a window
* 4-finger tap to open dash
e.g.
$ xinput list
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ ELAN Touchscreen id=10 [slave pointer (2)]
⎜ ↳ SynPS/2 Synaptics TouchPad id=12 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
↳ Power Button id=6 [slave keyboard (3)]
↳ Video Bus id=7 [slave keyboard (3)]
↳ Power Button id=8 [slave keyboard (3)]
↳ Integrated_Webcam_HD id=9 [slave keyboard (3)]
↳ AT Translated Set 2 keyboard id=11 [slave keyboard (3)]
↳ Dell WMI hotkeys id=13 [slave keyboard (3)]
$ xinput list-props "SynPS/2 Synaptics TouchPad" | grep Capabilities
Synaptics Capabilities (320): 1, 0, 0, 1, 1, 1, 1
For the 4th and the 5th "1", indicates that this touchpad supports two-
finger and three-finger detection respectively.
This issue could be traced back to bug 1294515,
"mtdev was dropped:
There are no touchpad drivers in the kernel tree that use protocol A, so
using mtdev is just a computationally expensiv and memory-wasting noop."
Note that 2-finger tapping should work as a right click, and 2-finger
vertical / horizontal scrolling should work as expected too.
** Affects: libevdev (Ubuntu)
Importance: Low
Status: Confirmed
** Tags: 201308-14155 certification-grey multitouch-touchpad taipei-lab trusty
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https://bugs.launchpad.net/bugs/1384042
Title:
Synaptic Touchpad 2-finger pinch / expand and 3 / 4-finger gestures
are not supported on 14.04
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