*** This bug is a duplicate of bug 777074 ***
https://bugs.launchpad.net/bugs/777074
I am also getting this same problem with my Apple Magic Trackpad on my
Lenovo T540 using only the bluetooth built-in to the laptop, running
Ubuntu 14.04.
My trackpad worked fine on older T510 running Ubuntu 12.04.
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https://bugs.launchpad.net/bugs/862085
Title:
Apple Magic Trackpad (hid-magicmouse) input freezes on 3 or 4 finger
touch
Status in Open Input Framework:
Invalid
Status in Unity:
Invalid
Status in “linux” package in Ubuntu:
In Progress
Status in “unity” package in Ubuntu:
Invalid
Bug description:
Update: The cause has been traced down to either a kernel or hardware
issue as per comment #4.
TEST CASE:
Test case without X or Unity:
1. Pair the trackpad using hcitool/hidd utilities.
2. Run: evtest /dev/input/whatever
You will see lots of input events for 1 or 2 finger touches. However the
evtest event stream freezes when 3 or more fingers are touched.
Test case in Unity:
Touch 3 fingers: After a second or two (?!) the grab handles appear but the
trackpad goes dead. Only my mouse continues to work. The trackpad comes back to
life a while after the grab handles vanish, and I've moved the pointer with the
mouse.
Touch 4 fingers: Trackpad goes dead again. Takes a while before it starts
responding again. This also triggers bug 859069.
I can reproduce the above bugs in Ubuntu 11.04 and 11.10 beta 2 (live).
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
CompizPlugins:
[core,bailer,detection,composite,opengl,compiztoolbox,decor,vpswitch,place,imgpng,regex,unitymtgrabhandles,grid,session,snap,mousepoll,resize,move,animation,expo,ezoom,workarounds,resizeinfo,wall,staticswitcher,fade,scale,unityshell]
CompositorRunning: compiz
Date: Thu Sep 29 15:00:41 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
Renderer: Unknown
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
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