Comment 5 for bug 1527740

Hi Joseph,

My battery ran down. When i plugged booted up everything was working, so
it's really intermittent, and the steps to resolve seem to always involve
always a reboot (after sometimes several times trying to disable the
trackpoint in BIOS, boot in and then enable trackpoint in BIOS and boot in
... but this does not always work), or a suspend. Several kernel versions
have had this problem, and so I was sort of starting to wonder if there was
some kind of a patch war going on behind the scenes, breaking it then
fixing it.

It might just be my hardware too, unless we see this from other users. I
did initially need to get this trackpad replaced a year ago, and so it
might be degrading?

As i mentioned, it has also a touchscreen. Idk if this can cause bus
conficts. One interesting thing is that when i disable the trackpoint in
bios, i can often get the pad itself to show up again and wok, but the
buttons won't work. So we've got the touchpad, the trackpad and a
trackpoint possibly conflicting?

i'd be hesitent to check the upstream kernel for sec reasons, since i work
on this laptop, but i can certainly tell you if i see the problem once it
gets pushed out. I'll just note that uname -a is currently:
Linux x1 3.13.0-74-generic #118-Ubuntu SMP Thu Dec 17 22:52:10 UTC 2015
x86_64 x86_64 x86_64 GNU/Linux
and if i see a problem on a later version let you know?

thanks for your reply!

_d

On Fri, Dec 18, 2015 at 3:40 PM, Joseph Salisbury <
<email address hidden>> wrote:

> Did this issue start happening after an update/upgrade? Was there a
> prior kernel version where you were not having this particular problem?
>
> Would it be possible for you to test the latest upstream kernel? Refer
> to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
> v4.4 kernel[0].
>
> If this bug is fixed in the mainline kernel, please add the following
> tag 'kernel-fixed-upstream'.
>
> If the mainline kernel does not fix this bug, please add the tag:
> 'kernel-bug-exists-upstream'.
>
> Once testing of the upstream kernel is complete, please mark this bug as
> "Confirmed".
>
>
> Thanks in advance.
>
> [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4-rc5-wily
>
> ** Changed in: linux (Ubuntu)
> Importance: Undecided => Medium
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1527740
>
> Title:
> Touchpad intermittently stops working
>
> Status in linux package in Ubuntu:
> Confirmed
>
> Bug description:
> Touchpad intermittently stops working on lenovo carbon x1 (gen1)
>
> If I close the lid, or sometimes disable and then re-enable touchpad
> in BIOS, it may sometimes come back. Sometimes running the software
> updater seems to fix or break it, but this may be incidental
>
> also perhaps incidental, im using virtualbox alot, and thats really
> the only thing new in my workflow.
>
> when it doesn't work, xinput list sometimes does not show the device.
> Once it shows, i can see properties in system settings -> mouse and
> touchpad', but that doesn't necessarily mean the touchpad is going to
> come alive.
>
> If it does start to work, it often works across several reboots.
>
> i've attached some additional files in a tarball:
> -- beforeaAndAfterLidClose -- this was a run of cat
> /proc/bus/input/devices before and after closing lid ... note that after
> closing and reopening, the TouchPad shows up.
> -- dmesg
> -- devices: a full '/cat/proc/bus/devices', obtained after the
> touchpad reappeared, which will show the vendor information
> -- Xorg.0.log
>
> define@x1:~/Desktop/touchPad$ lsb_release -rd
> Description: Ubuntu 14.04.3 LTS
> Release: 14.04
>
> ProblemType: Bug
> DistroRelease: Ubuntu 14.04
> Package: linux-image-3.13.0-74-generic 3.13.0-74.118
> ProcVersionSignature: Ubuntu 3.13.0-74.118-generic 3.13.11-ckt30
> Uname: Linux 3.13.0-74-generic x86_64
> ApportVersion: 2.14.1-0ubuntu3.19
> Architecture: amd64
> AudioDevicesInUse:
> USER PID ACCESS COMMAND
> /dev/snd/controlC0: define 2741 F.... pulseaudio
> CurrentDesktop: Unity
> Date: Fri Dec 18 14:32:53 2015
> HibernationDevice: RESUME=UUID=298e288a-808a-477a-b4b6-3905d0819c47
> InstallationDate: Installed on 2014-10-12 (432 days ago)
> InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64
> (20140722.2)
> MachineType: LENOVO 34606V9
> ProcFB: 0 inteldrmfb
> ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-74-generic
> root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
> RelatedPackageVersions:
> linux-restricted-modules-3.13.0-74-generic N/A
> linux-backports-modules-3.13.0-74-generic N/A
> linux-firmware 1.127.19
> SourcePackage: linux
> UpgradeStatus: No upgrade log present (probably fresh install)
> dmi.bios.date: 04/29/2013
> dmi.bios.vendor: LENOVO
> dmi.bios.version: G6ET96WW (2.56 )
> dmi.board.asset.tag: Not Available
> dmi.board.name: 34606V9
> dmi.board.vendor: LENOVO
> dmi.board.version: 0B98401 Pro
> dmi.chassis.asset.tag: No Asset Information
> dmi.chassis.type: 10
> dmi.chassis.vendor: LENOVO
> dmi.chassis.version: Not Available
> dmi.modalias:
> dmi:bvnLENOVO:bvrG6ET96WW(2.56):bd04/29/2013:svnLENOVO:pn34606V9:pvrThinkPadX1Carbon:rvnLENOVO:rn34606V9:rvr0B98401Pro:cvnLENOVO:ct10:cvrNotAvailable:
> dmi.product.name: 34606V9
> dmi.product.version: ThinkPad X1 Carbon
> dmi.sys.vendor: LENOVO
>
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>

--

_d
----------LinuxMintMATE, because my laptop is not a phone!