Ubuntu
linux package

Touchpad does not work, "lost sync at byte 6"

Bug #1739649 reported by Sami Sieranoja on 2017-12-21

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	linux (Ubuntu)	Expired	Medium	Unassigned

Bug Description

Touchpad does not work most of the time. I think it randomly started working once, but on several other tries/reboots, it does not work.

The device in question:
cat /proc/bus/input/devices

I: Bus=0011 Vendor=0002 Product=000e Version=0000
N: Name="ETPS/2 Elantech Touchpad"
P: Phys=isa0060/serio2/input0
S: Sysfs=/devices/platform/i8042/serio2/input/input9
U: Uniq=
H: Handlers=mouse0 event4
B: PROP=1
B: EV=b
B: KEY=e420 30000 0 0 0 0
B: ABS=661800011000003

Log messages:
dmesg |grep mouse | tail
[ 3573.938741] psmouse serio2: Touchpad at isa0060/serio2/input0 lost sync at byte 6
[ 3573.946967] psmouse serio2: Touchpad at isa0060/serio2/input0 lost sync at byte 6
[ 3573.955131] psmouse serio2: Touchpad at isa0060/serio2/input0 lost sync at byte 6
[ 3573.955133] psmouse serio2: issuing reconnect request
[ 3574.292050] psmouse serio2: Touchpad at isa0060/serio2/input0 lost sync at byte 6
[ 3574.300438] psmouse serio2: Touchpad at isa0060/serio2/input0 lost sync at byte 6
[ 3574.308767] psmouse serio2: Touchpad at isa0060/serio2/input0 lost sync at byte 6
[ 3574.317016] psmouse serio2: Touchpad at isa0060/serio2/input0 lost sync at byte 6
[ 3574.327805] psmouse serio2: Touchpad at isa0060/serio2/input0 lost sync at byte 6
[ 3574.327813] psmouse serio2: issuing reconnect request

Using the following workaround I can get it to work, but with limited functionality:
https://askubuntu.com/questions/922092/lifebook-e546-touchpad-on-ubuntu-16-04

sudo modprobe -r psmouse
sudo modprobe psmouse proto=imps

The problem with this fix is that two finger scrolling is no longer possible with the touchpad and the laptop has no other way to scroll.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xserver-xorg-input-synaptics 1.8.2-1ubuntu3
Uname: Linux 4.10.14-041014-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.10
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Dec 21 19:30:24 2017
DistUpgraded: 2017-06-29 13:53:24,058 DEBUG Running PostInstallScript: './xorg_fix_proprietary.py'
DistroCodename: xenial
DistroVariant: ubuntu
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-05-22 (944 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: FUJITSU LIFEBOOK E557
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.14-041014-generic root=UUID=f173708e-0a98-4b15-ad20-cc642244842f ro quiet splash vt.handoff=7
SourcePackage: xserver-xorg-input-synaptics
UpgradeStatus: Upgraded to xenial on 2017-06-29 (175 days ago)
dmi.bios.date: 08/23/2017
dmi.bios.vendor: FUJITSU // Insyde Software Corp.
dmi.bios.version: Version 1.08
dmi.board.name: FJNB2A2
dmi.board.vendor: FUJITSU
dmi.board.version: B1
dmi.chassis.type: 10
dmi.chassis.vendor: FUJITSU
dmi.chassis.version: LIFEBOOK E557
dmi.modalias: dmi:bvnFUJITSU//InsydeSoftwareCorp.:bvrVersion1.08:bd08/23/2017:svnFUJITSU:pnLIFEBOOKE557:pvr10601736746:rvnFUJITSU:rnFJNB2A2:rvrB1:cvnFUJITSU:ct10:cvrLIFEBOOKE557:
dmi.product.name: LIFEBOOK E557
dmi.product.version: 10601736746
dmi.sys.vendor: FUJITSU
version.compiz: compiz 1:0.9.12.2+16.04.20160823-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.76-1~ubuntu16.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 17.0.7-0ubuntu0.16.04.2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 17.0.7-0ubuntu0.16.04.2
version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-0ubuntu0.7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1.2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2
xserver.bootTime: Thu Dec 21 18:32:13 2017
xserver.configfile: default
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
product id 1191
vendor LGD
xserver.version: 2:1.18.4-0ubuntu0.7

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Revision history for this message

Sami Sieranoja (sjs-a) wrote on 2017-12-21:

BootLog.txt Edit (9.1 KiB, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (175.1 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (4.9 KiB, text/plain; charset="utf-8")
DpkgLog.txt Edit (9.0 KiB, text/plain; charset="utf-8")
JournalErrors.txt Edit (115.5 KiB, text/plain; charset="utf-8")
LightdmDisplayLog.txt Edit (4.5 KiB, text/plain; charset="utf-8")
LightdmGreeterLogOld.txt Edit (5.6 KiB, text/plain; charset="utf-8")
LightdmLog.txt Edit (6.5 KiB, text/plain; charset="utf-8")
Lspci.txt Edit (9.1 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (372 bytes, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (4.5 KiB, text/plain; charset="utf-8")
ProcCpuinfoMinimal.txt Edit (1.1 KiB, text/plain; charset="utf-8")
ProcEnviron.txt Edit (325 bytes, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (2.6 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (7.9 KiB, text/plain; charset="utf-8")
UdevDb.txt Edit (158.3 KiB, text/plain; charset="utf-8")
XorgLog.txt Edit (41.4 KiB, text/plain; charset="utf-8")
XorgLogOld.txt Edit (34.9 KiB, text/plain; charset="utf-8")
peripherals.txt Edit (518 bytes, text/plain; charset="utf-8")
xinput.txt Edit (836 bytes, text/plain; charset="utf-8")
xserver.devices.txt Edit (779 bytes, text/plain; charset="utf-8")
xserver.errors.txt Edit (239 bytes, text/plain; charset="utf-8")

Revision history for this message

Daniel van Vugt (vanvugt) wrote on 2018-01-09:

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Changed in linux (Ubuntu):
importance:	Undecided → Medium
status:	Confirmed → Incomplete

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