Public bug reported:
Running Ubuntu 14.04.1, Unity desktop, kernel 3.13.0-35 generic on Intel
Classmate, MG Pupil 109
The touchpad is identified in dmesg as
[ 1.539535] mousedev: PS/2 mouse device common for all mice
[ 2.528608] psmouse serio4: elantech: assuming hardware version 3 (with
firmware version 0x354f01)
[ 2.541184] psmouse serio4: elantech: Synaptics capabilities query result
0x39, 0x16, 0x09.
The cursor locks when you touch the touchpad with 2 or more fingers. The
only way I found to get it loose is reboot or suspend and resume.
modprobe -r psmouse
modprobe psmouse doesn' t work, also not with proto=auto
In systemsettings I disabled 2 finger scrolling without result
In dmesg I see messages like "psmouse serio4: Touchpad at
isa0060/serio4/input0 lost synchronization, throwing 5 bytes away during
normal operation". The number of bytes can be 4 too. When the cursor
locks up, I don't see such a message. Nothing is reported in dmesg.
Doing some research, I've learned that the touchpad should support multi
touch. Off course that doesn't work, since touching the pad with more
fingers makes it lock.
Any help much appreciated.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-35-generic 3.13.0-35.62
ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
Uname: Linux 3.13.0-35-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: test 1474 F.... pulseaudio
Date: Mon Sep 15 20:00:38 2014
HibernationDevice: RESUME=UUID=6f2e0704-c6a4-4f89-b357-c8e46ff9d0ec
InstallationDate: Installed on 2014-09-15 (0 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
MachineType: Intel Corporation Intel powered classmate PC
ProcEnviron:
LANGUAGE=nl_BE:nl
TERM=xterm
PATH=(custom, no user)
LANG=nl_BE.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-35-generic.efi.signed
root=UUID=40917190-7ade-42d5-a5d2-91f8c497278e ro quiet splash vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-3.13.0-35-generic N/A
linux-backports-modules-3.13.0-35-generic N/A
linux-firmware 1.127.5
SourcePackage: linux
StagingDrivers: rts5139
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/21/2014
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: MPBYT10A.90A.0029.2014.0421.1908
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Intel powered classmate PC
dmi.board.vendor: Intel Corporation
dmi.board.version: Clamshell
dmi.chassis.asset.tag: Asset Tag
dmi.chassis.type: 11
dmi.chassis.vendor: Intel Corporation
dmi.chassis.version: 0.1
dmi.modalias:
dmi:bvnPhoenixTechnologiesLtd.:bvrMPBYT10A.90A.0029.2014.0421.1908:bd04/21/2014:svnIntelCorporation:pnIntelpoweredclassmatePC:pvrClamshell:rvnIntelCorporation:rnIntelpoweredclassmatePC:rvrClamshell:cvnIntelCorporation:ct11:cvr0.1:
dmi.product.name: Intel powered classmate PC
dmi.product.version: Clamshell
dmi.sys.vendor: Intel Corporation
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug staging trusty
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https://bugs.launchpad.net/bugs/1369684
Title:
Elantech touchpad locks cursor when touching with 2 or more fingers
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