Ubuntu
xserver-xorg-input-synaptics package

touchpad input becomes erratic - reboot required

Bug #1559073 reported by Adam Colligan on 2016-03-18

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	xserver-xorg-input-synaptics (Ubuntu)	Invalid	Undecided	Unassigned

Bug Description

This is an intermittent issue that I have been experiencing with Ubuntu 15.10 (Unity) and an HP Envy x360 hybrid notebook.

Touchpad inputs suddenly begin to cause erratic outcomes. Making any input with the touchpad often causes the cursor to appear near the top right of the screen or in another unpredictable location. There are phantom left and right clicks recorded without the user inputting them. While trying to move the cursor to any particular place or to make some other action, the cursor "dances" around the area or appears at an extreme of the screen.

Touchscreen inputs and external mouse inputs continue to function normally. As long as the user is not interacting with the touchpad at all, then everything appears normal.

Only a full reboot appears sufficient to correct the error. I have not been able to test hibernate/resume as a workaround, as hibernate is not currently working on this machine. Logout/login and suspend-resume to not appear to correct the problem.

This bug does not appear reliably after any particular action or period of time. I have occasionally noticed it after a resume from suspend, but it has also been present on boot or just in the middle of normal operation. The logs posted with this bug were collected after an appearance in the middle of normal use.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: xserver-xorg-input-synaptics 1.8.2-1ubuntu1
ProcVersionSignature: Ubuntu 4.2.0-35.40-generic 4.2.8-ckt5
Uname: Linux 4.2.0-35-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Mar 18 00:50:56 2016
DistUpgraded: Fresh install
DistroCodename: wily
DistroVariant: ubuntu
InstallationDate: Installed on 2014-08-10 (586 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
MachineType: Hewlett-Packard HP ENVY 15 x360 PC
PlymouthDebug: Error: [Errno 13] Permission denied: '/var/log/plymouth-debug.log'
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.2.0-35-generic.efi.signed root=UUID=5ad8035a-f2a4-4334-84d8-e2a8a7396bf8 ro quiet splash vt.handoff=7
SourcePackage: xserver-xorg-input-synaptics
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/19/2015
dmi.bios.vendor: Insyde
dmi.bios.version: F.26
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: 22D6
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 89.23
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnInsyde:bvrF.26:bd01/19/2015:svnHewlett-Packard:pnHPENVY15x360PC:pvr0974100022405F00000420180:rvnHewlett-Packard:rn22D6:rvr89.23:cvnHewlett-Packard:ct10:cvrChassisVersion:
dmi.product.name: HP ENVY 15 x360 PC
dmi.product.version: 0974100022405F00000420180
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.12.2+15.10.20151202-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.65+git20151026.c745e541-0ubuntu0ricotz~wily
version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.4-1intel1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.4-1intel1
version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu9.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.99+git20150521.d64a13eb-0ubuntu0ricotz
version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11+git20150926.1ff13a92-0ubuntu0sarvatt
xserver.bootTime: Thu Mar 17 21:12:38 2016
xserver.configfile: default
xserver.errors:
Failed to load module "intel" (module does not exist, 0)
Failed to load module "intel" (module does not exist, 0)
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.17.2-1ubuntu9.1
xserver.video_driver: modeset

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Revision history for this message

Adam Colligan (adam-p) wrote on 2016-03-18:

dmesg - full session readout, error condition appeared near end Edit (110.0 KiB, text/plain)
BootLog.gz Edit (2.8 KiB, application/x-gzip)
CurrentDmesg.txt Edit (110.0 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (4.0 KiB, text/plain; charset="utf-8")
DpkgLog.txt Edit (209.2 KiB, text/plain; charset="utf-8")
JournalErrors.txt Edit (99.2 KiB, text/plain; charset="utf-8")
LightdmDisplayLog.txt Edit (1.2 KiB, text/plain; charset="utf-8")
LightdmGreeterLog.txt Edit (11.1 KiB, text/plain; charset="utf-8")
LightdmGreeterLogOld.txt Edit (8.1 KiB, text/plain; charset="utf-8")
LightdmLog.txt Edit (6.0 KiB, text/plain; charset="utf-8")
Lspci.txt Edit (10.6 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (446 bytes, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (3.9 KiB, text/plain; charset="utf-8")
ProcEnviron.txt Edit (112 bytes, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (2.6 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (7.1 KiB, text/plain; charset="utf-8")
UdevDb.txt Edit (170.9 KiB, text/plain; charset="utf-8")
UdevLog.txt Edit (252.7 KiB, text/plain; charset="utf-8")
XorgLog.txt Edit (64.9 KiB, text/plain; charset="utf-8")
XorgLogOld.txt Edit (97.6 KiB, text/plain; charset="utf-8")
peripherals.txt Edit (750 bytes, text/plain; charset="utf-8")
xinput.txt Edit (1.0 KiB, text/plain; charset="utf-8")
xserver.devices.txt Edit (553 bytes, text/plain; charset="utf-8")
xserver.outputs.txt Edit (672 bytes, text/plain; charset="utf-8")