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Message #106061
[Bug 1425445] Re: Regression: 3.16.0-31-generic breaks touchpad on Dell XPS13 (2015)
I'll build a Utopic test kernel with a revert of d1c7e29 and post a link
to it shortly.
In the mean time, could you test the latest mainline kernel to see if
this bug was already fixed? It can be downloaded from:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.0-rc1-vivid/
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https://bugs.launchpad.net/bugs/1425445
Title:
Regression: 3.16.0-31-generic breaks touchpad on Dell XPS13 (2015)
Status in linux package in Ubuntu:
Confirmed
Status in linux source package in Utopic:
Confirmed
Bug description:
Today’s kernel update breaks the touchpad on the 2015 Dell XPS13. On
3.16.0-30-generic the touchpad worked fine.
Symptoms are that the touchpad stops responding at random times.
A possible cause is this patch:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d1c7e29e8d276c669e8790bb8be9f505ddc48888
See also those two bug reports for a more detailed discussion of the I2C issues caused by the above patch and the XPS13:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1416601
https://bugzilla.redhat.com/show_bug.cgi?id=1188439
ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: linux-image-3.16.0-31-generic 3.16.0-31.41
ProcVersionSignature: Ubuntu 3.16.0-31.41-generic 3.16.7-ckt5
Uname: Linux 3.16.0-31-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.14.7-0ubuntu8.2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: jan 2547 F.... pulseaudio
/dev/snd/controlC1: jan 2547 F.... pulseaudio
CurrentDesktop: GNOME
Date: Wed Feb 25 10:19:01 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-01-30 (25 days ago)
InstallationMedia: Ubuntu-GNOME 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
MachineType: Dell Inc. XPS 13 9343
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=de_DE.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-31-generic.efi.signed root=UUID=e4431ecc-e85e-4e35-92af-58f455c46c2b ro kvm-intel.nested=1 "acpi_osi=!Windows 2013" psmouse.resetafter=0 quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.16.0-31-generic N/A
linux-backports-modules-3.16.0-31-generic N/A
linux-firmware 1.138.1
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/04/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A00
dmi.board.name: 0310JH
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA00:bd11/04/2014:svnDellInc.:pnXPS139343:pvr01:rvnDellInc.:rn0310JH:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: XPS 13 9343
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.
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