I think I observe a very similar issue on ubuntu 16.04, only in my case mouse reaction to touchpad is very laggy and jumpy/choppy. It started after one of the recent kernel updates. For me linux- image-4.4.0-72-generic seems to work fine with default kernel options, linux-image-4.4.0-78-generic is broken, so it must be one of the changes between these two version which breaks this.
Syslog: May 24 23:38:15 abbot kernel: [ 958.625194] psmouse serio1: Touchpad at isa0060/serio1/input0 lost synchronization, throwing 5 bytes away. May 24 23:38:15 abbot kernel: [ 959.139410] psmouse serio1: resync failed, issuing reconnect request May 24 23:38:16 abbot kernel: [ 959.676100] psmouse serio1: elantech: retrying ps2 command 0xf8 (2). May 24 23:38:16 abbot kernel: [ 960.186792] psmouse serio1: elantech: retrying ps2 command 0x00 (2). May 24 23:38:17 abbot kernel: [ 960.888154] psmouse serio1: elantech: retrying ps2 command 0x00 (1). May 24 23:38:18 abbot kernel: [ 961.592132] psmouse serio1: elantech: retrying ps2 command 0x00 (0). May 24 23:38:18 abbot kernel: [ 962.096170] psmouse serio1: elantech: ps2 command 0x00 failed. May 24 23:38:18 abbot kernel: [ 962.096181] psmouse serio1: elantech: failed to write register 0x07 with value 0x01. May 24 23:38:18 abbot kernel: [ 962.096183] psmouse serio1: elantech: failed to initialise registers. May 24 23:38:18 abbot kernel: [ 962.096184] psmouse serio1: elantech: failed to put touchpad back into absolute mode. May 24 23:38:19 abbot kernel: [ 962.803046] psmouse serio1: elantech: assuming hardware version 4 (with firmware version 0x4d1f03) May 24 23:38:19 abbot kernel: [ 962.818943] psmouse serio1: elantech: Synaptics capabilities query result 0x80, 0x14, 0x0c. May 24 23:38:19 abbot kernel: [ 962.832728] psmouse serio1: elantech: Elan sample query result 05, 00, 85 May 24 23:38:19 abbot kernel: [ 962.894729] input: Elantech PS/2 TrackPoint as /devices/platform/i8042/serio1/input/input18 May 24 23:38:19 abbot kernel: [ 962.911950] input: ETPS/2 Elantech Touchpad as /devices/platform/i8042/serio1/input/input17 May 24 23:38:37 abbot kernel: [ 980.879537] psmouse serio1: Touchpad at isa0060/serio1/input0 lost sync at byte 6 May 24 23:38:38 abbot kernel: [ 982.051838] psmouse serio1: Touchpad at isa0060/serio1/input0 lost synchronization, throwing 2 bytes away. May 24 23:38:39 abbot kernel: [ 982.563469] psmouse serio1: resync failed, issuing reconnect request -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1679962 Title: psmouse serio1: Explorer Mouse at isa0060/serio1/input0 lost synchronization, throwing 3 bytes away. Status in linux package in Ubuntu: Confirmed Bug description: 353/5000 Hello, Randomly the touchpad pointer moves to one end of the screen, and we have found that when it does message appears in dmseg: psmouse serio1: Explorer Mouse at isa0060/serio1/input0 lost synchronization, throwing 3 bytes away. Sometimes it happens after 10 minutes of use, sometimes it happens after 3 or 4 hours. We have tested several computers with touchpad "Hantick", that use the both, the evdev library and the libinput library. It always happens randomly. Thanks, ProblemType: Bug DistroRelease: Ubuntu 16.10 Package: linux-image-4.8.0-45-generic 4.8.0-45.48 ProcVersionSignature: Ubuntu 4.8.0-45.48-generic 4.8.17 Uname: Linux 4.8.0-45-generic x86_64 ApportVersion: 2.20.3-0ubuntu8.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: alejandrolopez 1678 F.... pulseaudio /dev/snd/controlC1: alejandrolopez 1678 F.... pulseaudio CurrentDesktop: MATE Date: Wed Apr 5 09:39:01 2017 HibernationDevice: RESUME=UUID=49104028-270a-4546-b219-b38918f339ba InstallationDate: Installed on 2016-04-30 (339 days ago) InstallationMedia: Ubuntu-MATE 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) MachineType: SLIMBOOK ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.8.0-45-generic.efi.signed root=UUID=d9619f09-3283-4f88-a9aa-a614f1b40470 ro elevator=noop quiet i8042.noloop i8042.notimeout i8042.nomux psmouse.resolution=1200 psmouse.resetafter=1 psmouse.rate=50 mousedev.xres=1900 mousedev.yres=800 i8042.reset plymouth:debug drm.debug=0xe RelatedPackageVersions: linux-restricted-modules-4.8.0-45-generic N/A linux-backports-modules-4.8.0-45-generic N/A linux-firmware 1.161.1 SourcePackage: linux UpgradeStatus: Upgraded to yakkety on 2016-11-10 (145 days ago) dmi.bios.date: 11/21/2014 dmi.bios.vendor: INSYDE Corp. dmi.bios.version: h dmi.board.asset.tag: Type2 - Board Asset Tag dmi.board.name: dmi.board.vendor: SLIMBOOK dmi.board.version: Type2 - Board Version dmi.chassis.asset.tag: Chassis Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: SLIMBOOK dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnINSYDECorp.:bvrh:bd11/21/2014:svnSLIMBOOK:pn:pvr1.0:rvnSLIMBOOK:rn:rvrType2-BoardVersion:cvnSLIMBOOK:ct10:cvrChassisVersion: dmi.product.name: dmi.product.version: 1.0 dmi.sys.vendor: SLIMBOOK To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1679962/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
