Public bug reported:
In 14.04 with the 3.13.0-36 kernel, the touchpad and trackpoint on my
Lenovo ThinkPad T410s function properly. On upgrade to the 3.13.0-37
kernel, KDE's system admin module says there is no touchpad, though the
touchpad and trackpoint function purely as mice. No scrolling withthe
touchpad, no possibility of configuring the touch pad to disable tap
while typing.
These problems persist with 14.10 and the 3.16-23 kernel. I tried the
3.18.0-031800rc1 kernel. It made the laptop incredibly slow, but did
reproduce the problem that kde's admin module does not see the touchpad.
(The rc2 kernel available today would not install because of a
dependency on a non-existent package (a header package for rc2 with no
all, amd64, or i386 suffix).
I have run cat /proc/input/devices for both the 3.18 and 3.13.0-36
kernels. The 13 kernel detects it as "SynPS/2 Synaptics TouchPad",
while the 18 kernel detects it as "PS/2 Synaptics TouchPad". However
the 13 kernel detects a separate IBM Trackpoint device, which the 18
kernel does not list, even though the track point does function as a
mouse with the 18 kernel.
xinput --list with the 13 kernel shows
Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ SynPS/2 Synaptics TouchPad id=11 [slave pointer (2)]
⎜ ↳ TPPS/2 IBM TrackPoint id=12 [slave pointer (2)]
with the 16 kernel it shows
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ PS/2 Synaptics TouchPad id=11 [slave pointer (2)]
The most relevant-looking lines of Xorg.0.log are, with the 16 kernel,
the single InputClass line
[ 11.702] (**) PS/2 Synaptics TouchPad: Applying InputClass "evdev
pointer catchall"
and, with the 13 kernel, the lines
17.820] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "evdev
touchpad catchall"
[ 17.820] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "touchpad
catchall"
[ 17.820] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "Default
clickpad buttons"
[ 17.820] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "Touchpad"
Also, with the 13 kernel,
[ 17.821] (II) Using input driver 'synaptics' for 'SynPS/2 Synaptics
TouchPad'
while with the 16 kenrel,
[ 11.703] (II) Using input driver 'evdev' for 'PS/2 Synaptics
TouchPad'
I will try to attach the six files.
ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: xserver-xorg-input-synaptics 1.8.1-1ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-36.63-generic 3.13.11.6
Uname: Linux 3.13.0-36-generic x86_64
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
CurrentDesktop: KDE
Date: Tue Oct 28 11:22:08 2014
InstallationDate: Installed on 2011-01-28 (1368 days ago)
InstallationMedia: Kubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
SourcePackage: xserver-xorg-input-synaptics
UpgradeStatus: Upgraded to utopic on 2014-10-28 (0 days ago)
** Affects: xserver-xorg-input-synaptics (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug touchpad trackpoint utopic
** Attachment added: "proc/input/devices, xinput --list, and Xorg.0.log for
both kernels"
https://bugs.launchpad.net/bugs/1386774/+attachment/4247225/+files/XserverAndKernelReports.txt
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https://bugs.launchpad.net/bugs/1386774
Title:
Synaptics touchpad and IBM trackpoint incompletely detected
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