Right-click simulation (two-finger hold+click) no longer works on MacBook touchpad

[Matthew Paul Thomas]

xserver-xorg-input-synaptics 1.5.99.901-0ubuntu1, Ubuntu 12.04 beta 1, MacBook early 2008

1. Hold down two fingers on the touchpad while clicking the button.

What should happen: The same as if you had right-clicked with a mouse.

What actually happens: Nothing.

This was working properly on 2012-03-14.
It stopped working after installing updates on 2012-03-19.
xserver-xorg-input-synaptics 1.5.99.901-0ubuntu1 was released on 2012-03-16.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xserver-xorg-input-synaptics 1.5.99.901-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-19.30-generic 3.2.11
Uname: Linux 3.2.0-19-generic i686
NonfreeKernelModules: wl
ApportVersion: 1.94.1-0ubuntu2
Architecture: i386
Date: Tue Mar 20 11:21:45 2012
DistUpgraded: 2012-02-27 15:49:39,336 DEBUG enabling apt cron job
DistroCodename: precise
DistroVariant: ubuntu
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
MachineType: Apple Inc. MacBook4,1
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-19-generic root=UUID=136588bc-9f5d-4ea2-abe3-91e4b5a4f747 ro quiet splash vt.handoff=7
SourcePackage: xserver-xorg-input-synaptics
UpgradeStatus: Upgraded to precise on 2012-02-27 (21 days ago)
dmi.bios.date: 02/09/08
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MB41.88Z.00C1.B00.0802091535
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Mac-F22788A9
dmi.board.vendor: Apple Inc.
dmi.board.version: PVT
dmi.chassis.asset.tag: Asset Tag#
dmi.chassis.type: 2
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-F22788A9
dmi.modalias: dmi:bvnAppleInc.:bvrMB41.88Z.00C1.B00.0802091535:bd02/09/08:svnAppleInc.:pnMacBook4,1:pvr1.0:rvnAppleInc.:rnMac-F22788A9:rvrPVT:cvnAppleInc.:ct2:cvrMac-F22788A9:
dmi.product.name: MacBook4,1
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
version.compiz: compiz 1:0.9.7.0+bzr3035-0ubuntu1
version.libdrm2: libdrm2 2.4.30-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.1-0ubuntu5
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.1-0ubuntu5
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2

[Chase Douglas (chasedouglas)]

Hi Matthew,

Please run "xinput list-props appletouch" and attach the output here. This will help us determine what configuration options are being set for your device.

Thanks!

[Chase Douglas (chasedouglas)]

The issue lies in a bad interaction between middle button emulation (press both physical right and left buttons at the same time) and click action support. This isn't seen for clickpads because middle button emulation is disabled by default.

[Launchpad Janitor (janitor)]

This bug was fixed in the package xserver-xorg-input-synaptics - 1.5.99.901-0ubuntu2

---------------
xserver-xorg-input-synaptics (1.5.99.901-0ubuntu2) precise; urgency=low

  * Disable three touch tap in favor of uTouch gestures (LP: #961725)
    - See
      https://lists.ubuntu.com/archives/ubuntu-desktop/2012-February/003694.html
      for details.
    - Add 129_disable_three_touch_tap.patch
  * Fix click actions for non-clickpad touchpads (LP: #960108)
    - Add temporary patch 200_fix_clickfinger_non-clickpads.patch
  * Fix click action finger count calculation (LP: #961738)
    - Add temporary patch 201_fix_clickfinger_clickpad_actions.patch
 -- Chase Douglas <email address hidden> Wed, 21 Mar 2012 16:00:26 -0700