Mouse pointer doesn't move with two fingers pressed on bcm5974 touchpad

Bug #894071 reported by Eric Williams on 2011-11-23
This bug affects 2 people
Affects Status Importance Assigned to Milestone
xserver-xorg-input-synaptics (Ubuntu)

Bug Description

## Issue

- mouse pointer doesn't move with two fingers pressed (although right-click is registered)

- cannot right-click 'n' drag with two-finger mouse button 2 emulation

- can't access context menus with right-click drag because mouse pointer doesn't move

## Environment

- bcm5974-based touchpad

- Unity, Window Maker, and Xfce are all affected

## Further information

Attached is the syslog after enabling debugging in the bcm5974 driver, and two-finger pressing and moving the two fingers around on the trackpad. Notice that the driver registered movement (Y: and X: values change with n:2, or two fingers down), but the pointer was not moving on the screen.

Steps used:

sudo echo -n 9 > /sys/module/bcm5974/parameters/debug
sudo logger begin two-finger test
[move fingers around with two-fingers pressed]
sudo logger end two-finger test

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: xserver-xorg-input-synaptics 1.4.1-1ubuntu2
ProcVersionSignature: Ubuntu 3.0.0-13.22-genUser Name 3.0.6
Uname: Linux 3.0.0-13-generic x86_64
NonfreeKernelModules: wl nvidia
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
Date: Wed Nov 23 16:48:01 2011
DistUpgraded: Fresh install
DistroCodename: oneiric
DistroVariant: ubuntu
EcryptfsInUse: Yes
InstallationMedia: Xubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
MachineType: Apple Inc. MacBookAir3,1
 PATH=(custom, user)
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-13-genUser Name root=UUID=686de268-3da1-4f6e-a561-b362efa0442b ro quiet splash vt.handoff=7
SourcePackage: xserver-xorg-input-synaptics
UdevDb: Error: [Errno 2] No such file or directory
UpgradeStatus: No upgrade log present (probably fresh install) 11/18/10
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBA31.88Z.0061.B01.1011181342
dmi.board.asset.tag: Base Board Asset Tag# Mac-942452F5819B1C1B
dmi.board.vendor: Apple Inc.
dmi.board.version: 1.0
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-942452F5819B1C1B
dmi.modalias: dmi:bvnAppleInc.:bvrMBA31.88Z.0061.B01.1011181342:bd11/18/10:svnAppleInc.:pnMacBookAir3,1:pvr1.0:rvnAppleInc.:rnMac-942452F5819B1C1B:rvr1.0:cvnAppleInc.:ct10:cvrMac-942452F5819B1C1B: MacBookAir3,1
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu6
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.26-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1

Revision history for this message
Eric Williams (eric-canonical) wrote :
Revision history for this message
Eric Williams (eric-canonical) wrote :
bugbot (bugbot) on 2011-11-24
tags: added: xubuntu
Revision history for this message
Rick Spencer (rick-rickspencer3) wrote :

I'm not sure what "right click and drag" is, but could someone take a look and see if this needs action?

Changed in xserver-xorg-input-synaptics (Ubuntu):
assignee: nobody → Canonical Desktop Team (canonical-desktop-team)
importance: Undecided → Low
Revision history for this message
Martin Pitt (pitti) wrote :

We don't configure two-finger scrolling by default, at least to my knowledge. Chase, is that something we should get through multi-touch?

Changed in xserver-xorg-input-synaptics (Ubuntu):
assignee: Canonical Desktop Team (canonical-desktop-team) → Chase Douglas (chasedouglas)
Revision history for this message
Martin Pitt (pitti) wrote :

@Chase: just assigned to you for a comment/investigation, feel free to unassign of course.

Revision history for this message
Eric Williams (eric-canonical) wrote :

Trying to be clearer:

Two-finger scrolling works fine, because it's not a button press, just a matter of lightly laying two fingers on the trackpad and moving them up and down.

We're talking about a two-finger *click* here. When the trackpad is clicked with two fingers, the pointer stops moving as long as the button is down.


Revision history for this message
Chase Douglas (chasedouglas) wrote :

This is an issue with our current stack. It falls under the general heading of: clickpad support is non-existent. We hope to address clickpad issues this cycle, but we don't have a good answer right now. The most useful work around is to enable tap-to-click. Although the user has to use a different mechanism to achieve the same results, everything is still possible.

Changed in xserver-xorg-input-synaptics (Ubuntu):
assignee: Chase Douglas (chasedouglas) → nobody
status: New → Triaged
Revision history for this message
benwin (abvwmc) wrote :

I have the same problem with Lenovo Z400.

Revision history for this message
Thiago Martins (martinx) wrote :

Impossible to use WindowMaker with Ubuntu 14.10 with my laptop, can not "right-click" on "Clip Main", can not use "right-click menus"...

This is very annoying, it depends on a mouse... I don't remember the last time I used a mouse with a laptop...

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