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[Bug 1506817] Re: left TPP/2 IBM TrackPoint "sticks on" randomly (X250 15.04)
In comment #34 you state:
"This leads one to believe there is a user space component to this that stopped allowing 4.5-rc3+ to work for you."
I had not changed anything that would account for this, other than responding to your request for a new kernel.
This activity is described in my comment #21:
"I was running kernel 4.5-rc3 and everything was great. Then sometime around Feb 3, 2016 (I don't know the exact date),
following an standard upgrade from Ubuntu, the old symptoms (left mouse button sticking) returned."
Following that date, nothing I tried would make 4.5-rc3 work, including
repeating all the steps in reinstalling 4.5-rc3, from scratch.
The only possibility that I can think of is that a standard weekly
ubuntu update to the kernel (headers, modules, etc?) was the source of
I am quite sure that I did not cause this by my tinkering.
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left TPP/2 IBM TrackPoint "sticks on" randomly (X250 15.04)
Status in linux package in Ubuntu:
I have reported the details of this problem at
As summarized on that question:
I used the command on the X250
evtest /dev/input/event15 | grep EV_KEY
I can see the bug, as follows:
I click on button 1 (left) over and over. When I push the button down,
I see it register as 1,
and when I let go of the key, it registers as a 0.
The bug is that every now and then (once every 20 clicks), when I let go
of the left mouse button (BIN_LEFT), it does not return to state 0 (it stays in state 1).
This is highly random, but cant be triggered more often, by dragging a
window, which I do with BIN_LEFT.
I am using a brand new X250, purchased in late July 2015. The system was returned 3 times to IBM repair as I assumed
this was a hardware error. Now with the above, it seems clear that this is a software issue.
apt-cache policy xserver-xorg-input-synaptics
*** 1.8.1-1ubuntu1 0
DistroRelease: Ubuntu 15.04
Package: xserver-xorg-input-synaptics 1.8.1-1ubuntu1
ProcVersionSignature: Ubuntu 3.19.0-30.34-generic 3.19.8-ckt6
Uname: Linux 3.19.0-30-generic x86_64
Date: Fri Oct 16 04:52:03 2015
DistUpgraded: Fresh install
InstallationDate: Installed on 2015-08-15 (61 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
MachineType: LENOVO 20CMCTO1WW
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-30-generic.efi.signed root=UUID=5718b40f-944e-47a3-acda-04e29336d0bc ro quiet splash vt.handoff=7
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.version: N10ET36W (1.15 )
dmi.board.asset.tag: Not Available
dmi.board.version: 0B98417 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.product.version: ThinkPad X250
version.compiz: compiz 1:0.9.12.1+15.04.20150410.1-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.60-2
version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.9-2ubuntu1~vivid2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.9-2ubuntu1~vivid2
version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2.2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
xserver.bootTime: Fri Oct 16 03:31:10 2015
product id 1079
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