Bug #648671 “Touchpad on Thinkpad T400s doesn't support two-fing...” : Bugs : xserver-xorg-input-synaptics package : Ubuntu

Revision history for this message

Alexander Hunziker (alex-hunziker) wrote on 2010-09-27:

#1

Binary package hint: xserver-xorg-input-synaptics

The touchpad on my laptop (a thinkpad T400s) supports recognising more than one finger hardware-wise, but that doesn't work under Ubuntu currently. In the touchpad capplets, I can only select the edge scrolling option, not the two-finger scrolling option.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: xserver-xorg-input-synaptics 1.2.2-2ubuntu5
ProcVersionSignature: Ubuntu 2.6.35-22.33-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic x86_64
Architecture: amd64
DRM.card0.DisplayPort.1:
status: disconnected
enabled: disabled
dpms: Off
modes:
edid-base64:
DRM.card0.DisplayPort.2:
status: disconnected
enabled: disabled
dpms: Off
modes:
edid-base64:
DRM.card0.DisplayPort.3:
status: disconnected
enabled: disabled
dpms: Off
modes:
edid-base64:
DRM.card0.HDMI_Type_A.1:
status: disconnected
enabled: disabled
dpms: Off
modes:
edid-base64:
DRM.card0.HDMI_Type_A.2:
status: disconnected
enabled: disabled
dpms: Off
modes:
edid-base64:
DRM.card0.LVDS.1:
status: connected
enabled: enabled
dpms: On
modes: 1440x900
edid-base64: AP///////wAwrjZAAAAAAAASAQOAHhN46uWVk1ZPkCgoUFQAAAABAQEBAQEBAQEBAQEBAQEBwSmg5FGEGjAwIDYAL74QAAAZ3iKgLFGEfjAwIDYAL74QAAAZAAAADwCVCjKVCigeCQBMo0JUAAAA/gBMVE4xNDFCVDA4MDAxAMs=
DRM.card0.VGA.1:
status: disconnected
enabled: disabled
dpms: Off
modes:
edid-base64:
Date: Mon Sep 27 12:14:07 2010
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
MachineType: LENOVO 28239KG
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-22-generic root=UUID=7b361d96-9c1b-4168-b7b1-261e6bd2734d ro quiet splash
ProcEnviron:
LANG=en_DK.utf8
SHELL=/bin/bash
SourcePackage: xserver-xorg-input-synaptics
dmi.bios.date: 05/31/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 6HET30WW (1.15 )
dmi.board.name: 28239KG
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr6HET30WW(1.15):bd05/31/2010:svnLENOVO:pn28239KG:pvrThinkPadT400s:rvnLENOVO:rn28239KG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 28239KG
dmi.product.version: ThinkPad T400s
dmi.sys.vendor: LENOVO
system:
distro: Ubuntu
codename: maverick
architecture: x86_64
kernel: 2.6.35-22-generic

Binary package hint: xserver-xorg-input-synaptics

The touchpad on my laptop (a thinkpad T400s) supports recognising more than one finger hardware-wise, but that doesn't work under Ubuntu currently. In the touchpad capplets, I can only select the edge scrolling option, not the two-finger scrolling option.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: xserver-xorg-input-synaptics 1.2.2-2ubuntu5
ProcVersionSignature: Ubuntu 2.6.35-22.33-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic x86_64
Architecture: amd64
DRM.card0.DisplayPort.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes: 
 edid-base64:
DRM.card0.DisplayPort.2:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes: 
 edid-base64:
DRM.card0.DisplayPort.3:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes: 
 edid-base64:
DRM.card0.HDMI_Type_A.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes: 
 edid-base64:
DRM.card0.HDMI_Type_A.2:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes: 
 edid-base64:
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1440x900
 edid-base64: AP///////wAwrjZAAAAAAAASAQOAHhN46uWVk1ZPkCgoUFQAAAABAQEBAQEBAQEBAQEBAQEBwSmg5FGEGjAwIDYAL74QAAAZ3iKgLFGEfjAwIDYAL74QAAAZAAAADwCVCjKVCigeCQBMo0JUAAAA/gBMVE4xNDFCVDA4MDAxAMs=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes: 
 edid-base64:
Date: Mon Sep 27 12:14:07 2010
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
MachineType: LENOVO 28239KG
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-22-generic root=UUID=7b361d96-9c1b-4168-b7b1-261e6bd2734d ro quiet splash
ProcEnviron:
 LANG=en_DK.utf8
 SHELL=/bin/bash
SourcePackage: xserver-xorg-input-synaptics
dmi.bios.date: 05/31/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 6HET30WW (1.15 )
dmi.board.name: 28239KG
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr6HET30WW(1.15):bd05/31/2010:svnLENOVO:pn28239KG:pvrThinkPadT400s:rvnLENOVO:rn28239KG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 28239KG
dmi.product.version: ThinkPad T400s
dmi.sys.vendor: LENOVO
system:
 distro:             Ubuntu
 codename:           maverick
 architecture:       x86_64
 kernel:             2.6.35-22-generic

Revision history for this message

Alexander Hunziker (alex-hunziker) wrote on 2010-09-27:

#2

BootDmesg.txt Edit (60.2 KiB, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (245.7 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (4.1 KiB, text/plain; charset="utf-8")
DkmsStatus.txt Edit (420 bytes, text/plain; charset="utf-8")
GdmLog.txt Edit (25.5 KiB, text/plain; charset="utf-8")
GdmLog1.txt Edit (67.8 KiB, text/plain; charset="utf-8")
GdmLog2.txt Edit (23.0 KiB, text/plain; charset="utf-8")
Lspci.txt Edit (13.6 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (743 bytes, text/plain; charset="utf-8")
PciDisplay.txt Edit (1.2 KiB, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (1.5 KiB, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (1.8 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (3.2 KiB, text/plain; charset="utf-8")
RelatedPackageVersions.txt Edit (242 bytes, text/plain; charset="utf-8")
UdevDb.txt Edit (122.6 KiB, text/plain; charset="utf-8")
UdevLog.txt Edit (272.3 KiB, text/plain; charset="utf-8")
XorgConf.txt Edit (172 bytes, text/plain; charset="utf-8")
XorgLog.txt Edit (35.2 KiB, text/plain; charset="utf-8")
XorgLogOld.txt Edit (89.0 KiB, text/plain; charset="utf-8")
Xrandr.txt Edit (4.4 KiB, text/plain; charset="utf-8")
glxinfo.txt Edit (11.0 KiB, text/plain; charset="utf-8")
monitors.xml.txt Edit (3.7 KiB, text/plain; charset="utf-8")
peripherals.txt Edit (1.6 KiB, text/plain; charset="utf-8")
setxkbmap.txt Edit (408 bytes, text/plain; charset="utf-8")
xdpyinfo.txt Edit (9.7 KiB, text/plain; charset="utf-8")
xkbcomp.txt Edit (68.1 KiB, text/plain; charset="utf-8")

Revision history for this message

In freedesktop.org Bugzilla #30393, Peter Hutterer (peter-hutterer) wrote on 2010-10-04:

#3

I'd need your Xorg.log please and the evtest output from the device.

Revision history for this message

In freedesktop.org Bugzilla #30393, Alexander Hunziker (alex-hunziker) wrote on 2010-10-05:

#4

Created an attachment (id=39180)
Xorg.0.log

Revision history for this message

In freedesktop.org Bugzilla #30393, Alexander Hunziker (alex-hunziker) wrote on 2010-10-05:

#5

Output from evtest:

Input driver version is 1.0.1
Input device ID: bus 0x11 vendor 0x2 product 0x7 version 0x1b1
Input device name: "SynPS/2 Synaptics TouchPad"
Supported events:
  Event type 0 (Sync)
  Event type 1 (Key)
    Event code 272 (LeftBtn)
    Event code 273 (RightBtn)
    Event code 274 (MiddleBtn)
    Event code 277 (ForwardBtn)
    Event code 278 (BackBtn)
    Event code 325 (ToolFinger)
    Event code 330 (Touch)
  Event type 3 (Absolute)
    Event code 0 (X)
      Value 0
      Min 1472
      Max 5888
    Event code 1 (Y)
      Value 0
      Min 1408
      Max 4820
    Event code 24 (Pressure)
      Value 0
      Min 0
      Max 255
    Event code 28 (Tool Width)
      Value 0
      Min 0
      Max 0
Testing ... (interrupt to exit)

Bug Watch Updater (bug-watch-updater) on 2010-10-06

Changed in xorg-driver-synaptics:
importance:	Unknown → Medium
status:	Unknown → Confirmed

Revision history for this message

Alexander Hunziker (alex-hunziker) wrote on 2010-10-18:

#6

This turns out to be a combination of several issues:

The kernel driver likely does not have a driver for the touchpad which supports multiple fingers. The touchpad however does support reporting fingerwidth and can therefore be used with two-finger emulation.

Two-finger emulation cannot be turned on using the Gnome Mouse capplet. See Gnome bug #625163

Even if one turns on two-finger emulation using the xinput interface, two-finger scrolling does not work. This is because, on Ubuntu, the default value for the property "Synaptics Two-Finger Pressure" is 280, which is much too high. A Fedora 14 Live CD i booted for testing, had a default value of 29 for that property. Indeed, lowering that value under Ubuntu makes Two-finger scrolling work. See the upstream bug for more info.

I don't know why this pressure default value is wrong on Ubuntu. It could be due do a different synaptics version, or due to a patch in Ubuntu?

Gursimran singh (simar) on 2010-11-19

Changed in xserver-xorg-input-synaptics (Ubuntu):
importance:	Undecided → Medium
status:	New → Confirmed

Revision history for this message

Felix Möller (felix-derklecks) wrote on 2011-09-26:

#7

I think this is more a duplicate of bug #849461 just changing the one synaptics configuration variable makes it work on my T400...

Affects		Status	Importance	Assigned to	Milestone
	XOrg-Driver-Synaptics	Confirmed	Medium	freedesktop-bugs #30393
	xserver-xorg-input-synaptics (Ubuntu)	Confirmed	Medium	Unassigned

Ubuntu
xserver-xorg-input-synaptics package

Touchpad on Thinkpad T400s doesn't support two-finger scroll

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Ubuntuxserver-xorg-input-synaptics package

Touchpad on Thinkpad T400s doesn't support two-finger scroll

Bug Description

Other bug subscribers

Bug attachments

Remote bug watches

Ubuntu
xserver-xorg-input-synaptics package