And here is dmesg after I've reloaded psmouse module. Not touchpad do not work as intended (no multitouch).
** Attachment added: "dmesg_elantech_failed.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1634593/+attachment/5035248/+files/dmesg_elantech_failed.txt -- 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/1634593 Title: Elantech Touchpad detects as PS/2 BYD TouchPad or as a PS/2 generic mouse Status in linux package in Ubuntu: Confirmed Bug description: I have an Elantech Touchpad installed on my Lenovo Y700 laptop and I can't make it work properly by any means. I tried to switch between libinput and synaptics but this bug seems to affect any driver. Usually, after a system upgrade all works properly till the moment I plug in external mouse (Razer DeathAdder 3500DPI). After that touchpad detected as either PS/2 BYD or PS/2 generic mouse or sometimes PS/2 Elantech touchpad. After some 5-6 reboots without plugging in external mouse the touchpad finally starts to detect it as ETPS/2 Elantech touchpad. Reloading psmouse module seems to cause no effect (or it does yet after a minute touchpad stops working for a moment and then switches to PS/2 in xinput). Multitouch stops working as well as tapping with two fingers. I tried almost all the possible workarounds involving adding boot options, installing elantech driver fixes etc. Help is appreciated. The output of xinput as for now: $ xinput ⎡ Virtual core pointer id=2 [master pointer (3)] ⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)] ⎜ ↳ PS/2 BYD TouchPad id=14 [slave pointer (2)] lsinput /dev/input/event14 bustype : BUS_I8042 vendor : 0x2 product : 0x1 version : 99 name : "PS/2 BYD TouchPad" phys : "isa0060/serio1/input0" bits ev : EV_SYN EV_KEY EV_REL UPDATE: Seems that forcing the psmouse to detect the touchpad as elantech helps to fix problem temporarily. But it works only from time to time: $ sudo rmmod psmouse $ sudo modprobe psmouse force="elantech" --- ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CurrentDesktop: Unity DistroRelease: Ubuntu 16.04 InstallationDate: Installed on 2016-08-27 (52 days ago) InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) Package: linux (not installed) Tags: xenial Uname: Linux 4.6.0-040600-generic x86_64 UnreportableReason: The running kernel is not an Ubuntu kernel UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True --- ApportVersion: 2.20.4-0ubuntu4 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: blobmasta 2054 F.... pulseaudio CurrentDesktop: Unity:Unity7 DistroRelease: Ubuntu 17.04 InstallationDate: Installed on 2018-01-07 (3 days ago) InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412) MachineType: LENOVO 80NV Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-42-generic.efi.signed root=UUID=e8b26b1d-8539-4186-b5d1-0b54182e3d56 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 4.10.0-42.46-generic 4.10.17 RelatedPackageVersions: linux-restricted-modules-4.10.0-42-generic N/A linux-backports-modules-4.10.0-42-generic N/A linux-firmware 1.164 Tags: zesty Uname: Linux 4.10.0-42-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 09/19/2016 dmi.bios.vendor: LENOVO dmi.bios.version: CDCN53WW dmi.board.asset.tag: NO Asset Tag dmi.board.name: Allsparks 5A dmi.board.vendor: LENOVO dmi.board.version: SDK0J40688 WIN dmi.chassis.asset.tag: NO Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo ideapad Y700-15ISK dmi.modalias: dmi:bvnLENOVO:bvrCDCN53WW:bd09/19/2016:svnLENOVO:pn80NV:pvrLenovoideapadY700-15ISK:rvnLENOVO:rnAllsparks5A:rvrSDK0J40688WIN:cvnLENOVO:ct10:cvrLenovoideapadY700-15ISK: dmi.product.name: 80NV dmi.product.version: Lenovo ideapad Y700-15ISK dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1634593/+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
