Elantech Touchpad has severe delay and sensitivity is inconsistent

[Guy Taylor]

Elantech Touchpad become unusable in precise. There is a severe delay from touch-to-pointer and the sensitivity is far from consistent with previous versions of Ubuntu.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xorg 1:7.6+10ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-15.24-generic-pae 3.2.5
Uname: Linux 3.2.0-15-generic-pae i686
.tmp.unity.support.test.0:

ApportVersion: 1.91-0ubuntu1
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,snap,regex,move,mousepoll,vpswitch,wall,grid,gnomecompat,place,imgpng,session,resize,animation,fade,scale,expo,workarounds,ezoom,unityshell]
CompositorRunning: compiz
Date: Tue Feb 14 00:34:00 2012
DistUpgraded: Log time: 2012-02-13 22:58:45.341436
DistroCodename: precise
DistroVariant: ubuntu
EcryptfsInUse: Yes
ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu
GraphicsCard:
 Intel Corporation Mobile 945GME Express Integrated Graphics Controller [8086:27ae] (rev 03) (prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. Device [1043:830f]
   Subsystem: ASUSTeK Computer Inc. Device [1043:830f]
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20120201.1)
MachineType: ASUSTeK Computer INC. 1000
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-15-generic-pae root=UUID=8c63ff47-6b54-4313-8ac8-39c5b4ea9918 ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: Upgraded to precise on 2012-02-13 (0 days ago)
dmi.bios.date: 06/11/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1003
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 1000
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: x.xx
dmi.chassis.asset.tag: 0x00000000
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTek Computer INC.
dmi.chassis.version: x.x
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1003:bd06/11/2009:svnASUSTeKComputerINC.:pn1000:pvrx.x:rvnASUSTeKComputerINC.:rn1000:rvrx.xx:cvnASUSTekComputerINC.:ct10:cvrx.x:
dmi.product.name: 1000
dmi.product.version: x.x
dmi.sys.vendor: ASUSTeK Computer INC.
version.compiz: compiz 1:0.9.7.0~bzr2995-0ubuntu1
version.libdrm2: libdrm2 2.4.30-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0~rc2-0ubuntu5
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0~rc2-0ubuntu5
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.99.901+git20120126-0ubuntu2
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 2:2.17.0-1ubuntu3
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[greg (grigorig)]

On my system with Elantech touchpad, there sometimes is trouble with detecting motion events. For example, if I scroll through a menu with the pointer, the menu items are not hilighted as they should be, and the overlay scrollbar does not work correctly.

Curiously, attaching a USB mouse fixes this somewhat (that is, it works correctly with the touchpad, as soon as a mouse is plugged in!), and so does forcing the "psmouse" driver to the "imps" protocol, so that the touchpad isn't handled by synaptics anymore.

[greg (grigorig)]

Never mind, that was due to https://bugs.launchpad.net/gtk/+bug/949414, which is partially fixed.

[Bryce Harrington (bryce)]

Guy,

-synaptics received a lot of development work this cycle, including after you filed this bug report; can you re-test to see if current precise has these same performance issues?

[Guy Taylor (thebiggerguy)]

The touchpad has vastly improved, slightly different but well within expectable limits.