No, multi touch does not work any more with this parameter. Touch pad and track point are reduced to the functions of a standard mouse, I beliebe, which can also be seen in the corresponding settings dialog. Scrolling with the help of the middle track point button works though, as it is customary on ThinkPad models.
** Attachment added: "Settings dialog - limited to standard mouse settings" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1731163/+attachment/5008812/+files/settings-touch-devices.png -- 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/1731163 Title: Trackpoint device not working by default on Thinkpad L570 Status in linux package in Ubuntu: Confirmed Bug description: Installing Ubuntu 17.10 on a ThinkPad L570 (L470 should be the same in this regard) leaves the trackpoint as well as the trackpoint buttons in a non-working state. Most probably, it is not correctly detected on startup; dmesg shows kernel: [ 2.997182 ] input: AlpsPS/2 ALPS GlidePoint as /devices/platform/i8042/serio1/input/input6 As far as I understand it, "GlidePoint" only refers to a touch pad without track point. All events coming from the track point are consequently actively discarded, seen in dmesg as kernel: [ 2279.323441 ] psmouse serio1: alps: Rejected trackstick packet from non DualPoint device Searching for this problem I found this kernel developer discussion which seems related: https://patchwork.kernel.org/patch/9941661/ As suggested by one of the kernel developers there, I added "psmouse.proto=imps" as a kernel boot parameter. The touch pad and track point now show up in the system log as input: PS/2 Generic Mouse as /devices/platform/i8042/serio1/input/input6 And it works well now, just as it should. I also noted that the touch pad became a lot more usable at the same time. Previously (with the default installation) it was lagging and could produce pseudo clicks at random. I am submitting this report here in order to help improve the hardware detection in Ubuntu / linux kernel. Ubuntu version: 17.10 Kernel version: 4.13.0.16.17 Default GNOME desktop, Wayland, etc, just as it comes in the default install --- ApportVersion: 2.20.7-0ubuntu3.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: dirichs 896 F.... pulseaudio CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 17.10 InstallationDate: Installed on 2017-11-07 (1 days ago) InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 005: ID 8087:0a2b Intel Corp. Bus 001 Device 002: ID 5986:111c Acer, Inc Bus 001 Device 004: ID 05e3:0608 Genesys Logic, Inc. Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: LENOVO 20J8CTO1WW Package: linux (not installed) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=de_DE.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-16-generic.efi.signed root=UUID=f2a92db0-5f37-4d70-b878-a4ba4c80e890 ro quiet splash psmouse.proto=imps vt.handoff=7 ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4 RelatedPackageVersions: linux-restricted-modules-4.13.0-16-generic N/A linux-backports-modules-4.13.0-16-generic N/A linux-firmware 1.169 Tags: wayland-session artful Uname: Linux 4.13.0-16-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 07/12/2017 dmi.bios.vendor: LENOVO dmi.bios.version: N1XET43W (1.21 ) dmi.board.asset.tag: Not Available dmi.board.name: 20J8CTO1WW dmi.board.vendor: LENOVO dmi.board.version: SDK0J40709 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN1XET43W(1.21):bd07/12/2017:svnLENOVO:pn20J8CTO1WW:pvrThinkPadL570:rvnLENOVO:rn20J8CTO1WW:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad L570 dmi.product.name: 20J8CTO1WW dmi.product.version: ThinkPad L570 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1731163/+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
