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[Bug 1506817] Re: left TPP/2 IBM TrackPoint "sticks on" randomly (X250 15.04)
in message #34 you requested that In install 4.6-rc4
In message #36 I discussed 4.6-rc5, which did not resolve the issue.
in message #34 based on your request, I installed rc4, which did not resolve the issue.
in message #17 I used 4.5-rc3 (NOT 4.6), and it did resolve the issue.
in message #21 I state:
"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."
This abrupt change was not due to a kernel change. I was running
4.5-rc3, before and after
After Feb 3 the X250 was unuseable no matter what I did. If you read the details, I tried all sorts of things. I even
reinstalled the OS from scratch and tried to reinstall 4.5-rc3, from scratch. To no avail. Nothing worked.
NOTE: the USB mouse has always been totally functional, and the trackpad
and trackpoint work, but the left mouse button sticks on, rendering the
Eventually I was forced to switched over to my previous computer X220i,
which has both a trackpad and trackpoint. This machine works perfectly.
The X250 is sitting in the corner, unuseable (unless I downgrade to a
USB mouse, which works perfectly on the X250).
In my last attempt, today April 30, 2016, I swapped computers with my
wife, so I now have her X250. That functions exactly as my X250. This
rules out any hardware issues.
It is noteable, IMO, that the BIOS in the X220i and the X250 behave very different wrt the synaptics mouse, as documented
in message #35.
Status today: I'm using the X220i for daily work. The X250 still has the mouse bug.
None of the kernel and BIOS changes had any effect at all.
The X250 spontaneously stopped working on or about Feb 2, following a standard upgrade (not a kernel change!)
Chris, I appreciate your attention to this, but I think we need to get
to a new level re this problem. If the community wishes to continue to
use X series thinkpads (I'm sure they do), then this problem needs a
What will Lenovo come up with next? Is the beginning of the end of
Thinkpads and Linux?
I have more than 10 of these X-series laptops lying around my office.
I've been using X hardware for many years. I see this as the end of the
line, all due to a stupid mouse driver bug.
Please correct me if I'm wrong in my summary.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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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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