Apple Magic Trackpad: 2/3-finger click does a left-click instead of right/middle-click

[Daniel van Vugt]

When I try to right-click with the Apple Magic Trackpad using two fingers, it just does a regular left click. Strange, because multi-touch seems to be working -- two finger scrolling is working perfectly.

Note: I have tap-to-click turned off so am using the physical button built into the Magic Trackpad.

WORKAROUND:

synclient ClickFinger2=3
synclient ClickFinger3=2
or...
xinput set-prop 'Apple Wireless Trackpad' 'Synaptics Click Action' 1 3 2

Note: If you're running Unity then you will also need the fix for bug 754000 to get 3-finger clicks working as middle-button.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: xserver-xorg-input-synaptics 1.3.99+git20110116.0e27ce3a-0ubuntu12.1
ProcVersionSignature: Ubuntu 2.6.38-11.50-generic 2.6.38.8
Uname: Linux 2.6.38-11-generic x86_64
Architecture: amd64
Date: Thu Sep 29 15:16:45 2011
DistUpgraded: Fresh install
DistroCodename: natty
DistroVariant: ubuntu
DkmsStatus:
 bcmwl, 5.100.82.38+bdcom, 2.6.38-11-generic, x86_64: installed
 vboxhost, 4.0.10, 2.6.38-11-generic, x86_64: installed
 vboxhost, 4.0.10, 2.6.38-10-generic, x86_64: installed
GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0102] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Dell Device [1028:047e]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
MachineType: Dell Inc. OptiPlex 990
ProcEnviron:
 LANGUAGE=en_AU:en
 LANG=en_AU.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-11-generic root=UUID=e79b78d3-ed94-4285-8af0-4c7803ef2097 ro quiet splash vt.handoff=7
SourcePackage: xserver-xorg-input-synaptics
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/28/2011
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A05
dmi.board.name: 0D6H9T
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 15
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA05:bd05/28/2011:svnDellInc.:pnOptiPlex990:pvr01:rvnDellInc.:rn0D6H9T:rvrA00:cvnDellInc.:ct15:cvr:
dmi.product.name: OptiPlex 990
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.4+bzr20110606-0ubuntu1~natty2vv4
version.ia32-libs: ia32-libs 20090808ubuntu13
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3.1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4.1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7

[Daniel van Vugt (vanvugt)]

Confirmed this bug also occurs in Ubuntu 11.10 beta 2 (live).

[Daniel van Vugt (vanvugt)]

Found the problem. xserver-xorg-input-synaptics is defaulting to any click = button 1. Obviously...

The workaround is simple:
    synclient ClickFinger2=3
or:
    xinput set-prop 'Apple Wireless Trackpad' 'Synaptics Click Action' 1 3 2

[Daniel van Vugt (vanvugt)]

Found the cause of this bug:

    http://cgit.freedesktop.org/xorg/driver/xf86-input-synaptics/commit/?id=776ec0ed42616769ed834b5822df3b2b0d5c0e85

But that's not the root cause... It is triggered because the hid-magicmouse module reports the Magic Trackpad as having 2 buttons when it should only report 1. This can be seen with evtest:

# evtest /dev/input/event7
Input driver version is 1.0.1
Input device ID: bus 0x5 vendor 0x5ac product 0x30e version 0x160
Input device name: "Apple Wireless Trackpad"
Supported events:
  Event type 0 (Sync)
  Event type 1 (Key)
    Event code 256 (Btn0)
    Event code 257 (Btn1)
    Event code 272 (LeftBtn)
    Event code 273 (RightBtn) <------------ WRONG
    Event code 325 (ToolFinger)
    Event code 330 (Touch)
    Event code 333 (Tool Doubletap)
    Event code 334 (Tool Tripletap)
    Event code 335 (?)

[Daniel van Vugt (vanvugt)]

Changing package to linux as the root cause of this bug has been tracked down to the "hid-magicmouse" kernel module.

[Daniel van Vugt (vanvugt)]

@Chase, please review.

[Chase Douglas (chasedouglas)]

Daniel, you seem to be correct. There's some code in the hid-magicmouse module that enables multitouch mode for the magic trackpad. It sounds like we need to remove the RightBtn code when that happens. Would you be able to create a patch for this and send it to the linux-input mailing list? If not, I can take a look.

Thanks!

[Daniel van Vugt (vanvugt)]

The fix is making its way into the kernel soon, I hope:
http://www.spinics.net/lists/linux-input/msg17747.html

[Daniel van Vugt (vanvugt)]

The fix has been accepted by the linux-input maintainer, probably going to appear in kernel 3.2...
http://git.kernel.org/?p=linux/kernel/git/jikos/hid.git;a=commitdiff;h=bca621421c53caf73f36e181d6e5fe41fe0da7a7

[Daniel van Vugt (vanvugt)]

Fix released upstream in kernel 3.2-rc1:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commitdiff;h=bca621421c53caf73f36e181d6e5fe41fe0da7a7

[Daniel van Vugt (vanvugt)]

In theory you can try the fix in oneiric using these packages:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.2-rc1-oneiric/

[Bilal Akhtar (bilalakhtar)]

Kernel bug, uTouch is not to blame

[Daniel van Vugt (vanvugt)]

Fix released in kernel 3.2, hence released in precise alpha-1.