Hi Helmut,
Thank you for sharing the article on MSFT (I'm been long wondering what
does MSFT mean).
> Right, it affects all MSFT touchpads.
>
> At the moment there is nothing for MSFT - we will have to be very patient and
> hope, that someone can find a driver for it.
I think The Microsoft Precision Touchpad has been implemented in
drivers/hid/hid-multitouch.c.
$ git log --grep="Precision Touchpad"
commit 9152c7d77d87e2b6b9ccc21bb52f8eea15744f50
Author: Dmitry Torokhov <dmitry.torok...@gmail.com>
Date: Fri Jul 13 16:13:52 2018 +0200
HID: multitouch: report MT_TOOL_PALM for non-confident touches
According to Microsoft specification [1] for Precision Touchpads (and
Touchscreens) the devices use "confidence" reports to signal accidental
touches, or contacts that are "too large to be a finger". Instead of
simply marking contact inactive in this case (which causes issues if
contact was originally proper and we lost confidence in it later, as
this results in accidental clicks, drags, etc), let's report such
contacts as MT_TOOL_PALM and let userspace decide what to do.
[1]
https://docs.microsoft.com/en-us/windows-hardware/design/component-guidelines/touchpad-windows-precision-touchpad-collection
And
https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/legion-series/legion-5-15arh05/downloads/driver-list/
doesn't list the driver for the touchpad. According to this Chinese webpage
https://newsupport.lenovo.com.cn/driveDownloads_detail.html?driveId=47994, no
special driver is needed for Windows 10.
So maybe there are some issues in drivers/hid/hid-mulititouch.c. For for
the Synaptics touchpad of this model, the pointer won't move but 2/3/4
fingers touching events can be reported. And for the Elan touchpad,
according to Stefano, no events are reported.
Since both touchpads works on Windows and "Precision touchpad becomes
mandatory for Windows 10 notebooks", we can fix both touchpads by fixing
hid-mulittouch. Can someone show me the content of
/sys/kernel/debug/hid/*\:04F3\:3140.0001/rdesc which has the Report
Descriptors when your ELAN touchpad is being handled by hid-multitouch?
For example, for the Synaptics touchpad,
$ cat /sys/kernel/debug/hid/0018\:06CB\:7F28.0001/rdesc
05 01 09 02 a1 01 85 02 09 01 a1 00 05 09 19 01 29 02 15 00 25 01 75 01 95 02
81 02 95 06 81 01 05 01 09 30 09 31 15 81 25 7f 75 08 95 02 81 06 c0 c0 05 0d
09 05 a1 01 85 03 05 0d 09 22 a1 02 15 00 25 01 09 47 0
9 42 95 02 75 01 81 02 95 01 75 03 25 05 09 51 81 02 75 01 95 03 81 03 05 01 15
00 26 c8 04 75 10 55 0e 65 11 09 30 35 00 46 fc 03 95 01 81 02 46 9d 02 26 24
03 09 31 81 02 c0 05 0d 09 22 a1 02 15 00 25 01 09 47
09 42 95 02 75 01 81 02 95 01 75 03 25 05 09 51 81 02 75 01 95 03 81 03 05 01
15 00 26 c8 04 75 10 55 0e 65 11 09 30 35 00 46 fc 03 95 01 81 02 46 9d 02 26
24 03 09 31 81 02 c0 05 0d 09 22 a1 02 15 00 25 01 09
47 09 42 95 02 75 01 81 02 95 01 75 03 25 05 09 51 81 02 75 01 95 03 81 03 05
01 15 00 26 c8 04 75 10 55 0e 65 11 09 30 35 00 46 fc 03 95 01 81 02 46 9d 02
26 24 03 09 31 81 02 c0 05 0d 09 22 a1 02 15 00 25 01 0
9 47 09 42 95 02 75 01 81 02 95 01 75 03 25 05 09 51 81 02 75 01 95 03 81 03 05
01 15 00 26 c8 04 75 10 55 0e 65 11 09 30 35 00 46 fc 03 95 01 81 02 46 9d 02
26 24 03 09 31 81 02 c0 05 0d 09 22 a1 02 15 00 25 01
09 47 09 42 95 02 75 01 81 02 95 01 75 03 25 05 09 51 81 02 75 01 95 03 81 03
05 01 15 00 26 c8 04 75 10 55 0e 65 11 09 30 35 00 46 fc 03 95 01 81 02 46 9d
02 26 24 03 09 31 81 02 c0 05 0d 55 0c 66 01 10 47 ff
ff 00 00 27 ff ff 00 00 75 10 95 01 09 56 81 02 09 54 25 7f 95 01 75 08 81 02
05 09 09 01 25 01 75 01 95 01 81 02 95 07 81 03 05 0d 85 08 09 55 09 59 75 04
95 02 25 0f b1 02 85 0d 09 60 75 01 95 01 15 00 25 01 b
1 02 95 07 b1 03 85 07 06 00 ff 09 c5 15 00 26 ff 00 75 08 96 00 01 b1 02 c0 05
0d 09 0e a1 01 85 04 09 22 a1 02 09 52 15 00 25 0a 75 08 95 01 b1 02 c0 09 22
a1 00 85 06 09 57 09 58 75 01 95 02 25 01 b1 02 95 06
b1 03 c0 c0 06 00 ff 09 01 a1 01 85 09 09 02 15 00 26 ff 00 75 08 95 14 91 02
85 0a 09 03 15 00 26 ff 00 75 08 95 14 91 02 85 0b 09 04 15 00 26 ff 00 75 08
95 3d 81 02 85 0c 09 05 15 00 26 ff 00 75 08 95 3d 81
02 85 0f 09 06 15 00 26 ff 00 75 08 95 03 b1 02 85 0e 09 07 15 00 26 ff 00 75
08 95 01 b1 02 c0
INPUT(2)[INPUT]
Field(0)
Physical(GenericDesktop.Pointer)
Application(GenericDesktop.Mouse)
Usage(2)
Button.0001
Button.0002
Logical Minimum(0)
Logical Maximum(1)
Report Size(1)
Report Count(2)
Report Offset(0)
Flags( Variable Absolute )
Field(1)
Physical(GenericDesktop.Pointer)
Application(GenericDesktop.Mouse)
Usage(2)
GenericDesktop.X
GenericDesktop.Y
Logical Minimum(-127)
Logical Maximum(127)
Report Size(8)
Report Count(2)
Report Offset(8)
Flags( Variable Relative )
INPUT(3)[INPUT]
Field(0)
Logical(Digitizers.Finger)
Application(Digitizers.TouchPad)
Usage(2)
Digitizers.Confidence
Digitizers.TipSwitch
Logical Minimum(0)
Logical Maximum(1)
Report Size(1)
Report Count(2)
Report Offset(0)
Flags( Variable Absolute )
Field(1)
Logical(Digitizers.Finger)
Application(Digitizers.TouchPad)
Usage(1)
Digitizers.ContactID
Logical Minimum(0)
Logical Maximum(5)
Report Size(3)
Report Count(1)
Report Offset(2)
Flags( Variable Absolute )
Field(2)
Logical(Digitizers.Finger)
Application(Digitizers.TouchPad)
Usage(1)
GenericDesktop.X
Logical Minimum(0)
Logical Maximum(1224)
Physical Minimum(0)
Physical Maximum(1020)
Unit Exponent(-2)
Unit(SI Linear : Centimeter)
Report Size(16)
Report Count(1)
Report Offset(8)
Flags( Variable Absolute )
Field(3)
Logical(Digitizers.Finger)
Application(Digitizers.TouchPad)
Usage(1)
GenericDesktop.Y
Logical Minimum(0)
Logical Maximum(804)
Physical Minimum(0)
Physical Maximum(669)
Unit Exponent(-2)
Unit(SI Linear : Centimeter)
Report Size(16)
Report Count(1)
Report Offset(24)
Flags( Variable Absolute )
--
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/1887190
Title:
MSFT Touchpad not working on Lenovo Legion-5 15ARH05
Status in Pop!_OS:
New
Status in linux package in Ubuntu:
Confirmed
Status in xserver-xorg-input-libinput package in Ubuntu:
Confirmed
Status in linux package in Arch Linux:
Confirmed
Status in linux package in Fedora:
Confirmed
Status in linux package in openSUSE:
New
Bug description:
Hello
The MSFT touchpad of this Lenovo Legion-5 15ARH05 laptop is not reacting at
all (pointer and click never move when touchpad is touched). This has been
reported by other users in various websites, with various linux systems
including other Ubuntu systems, but I saw no launchpad bug so I post one.
Example of websites covering the issue :
- https://askubuntu.com/questions/1253830/lenovo-legion-5-touchpad (exactly
the same laptop)
- https://www.linux.org/threads/lenovo-legion-5-touchpad.29536/ (similar
laptop)
xinput indentifies it as MSFT0001:00 04F3:3140
Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer
(2)]
⎜ ↳ MSFT0001:00 04F3:3140 Touchpad id=17 [slave pointer
(2)]
⎜ ↳ MSFT0001:00 04F3:3140 Mouse id=16 [slave pointer
(2)]
⎜ ↳ ITE Tech. Inc. ITE Device(8910) Consumer Control id=12 [slave
pointer (2)]
⎜ ↳ Logitech USB Optical Mouse id=11 [slave pointer
(2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave
keyboard (3)]
↳ Ideapad extra buttons id=15 [slave
keyboard (3)]
↳ Power Button id=6 [slave
keyboard (3)]
↳ Integrated Camera: Integrated C id=10 [slave
keyboard (3)]
↳ Video Bus id=7 [slave
keyboard (3)]
↳ ITE Tech. Inc. ITE Device(8910) Consumer Control id=19 [slave
keyboard (3)]
↳ Power Button id=9 [slave
keyboard (3)]
↳ ITE Tech. Inc. ITE Device(8910) Wireless Radio Control id=13 [slave
keyboard (3)]
↳ ITE Tech. Inc. ITE Device(8910) Keyboard id=14 [slave
keyboard (3)]
↳ AT Translated Set 2 keyboard id=18 [slave
keyboard (3)]
↳ Video Bus id=8 [slave
keyboard (3)]
Thanks a lot for your time. It does not help, but I can confirm what
was reported on askubuntu by another user : the touchpad does work on
Windows.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-40-generic 5.4.0-40.44
ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44
Uname: Linux 5.4.0-40-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: nicolas 1567 F.... pulseaudio
/dev/snd/controlC1: nicolas 1567 F.... pulseaudio
/dev/snd/controlC2: nicolas 1567 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Fri Jul 10 20:14:25 2020
InstallationDate: Installed on 2020-07-02 (8 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
MachineType: LENOVO 82B5
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=fr_FR.UTF-8
SHELL=/bin/bash
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-40-generic
root=UUID=d8898017-2821-434e-ab52-fec76ac93106 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-5.4.0-40-generic N/A
linux-backports-modules-5.4.0-40-generic N/A
linux-firmware 1.187.1
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/12/2020
dmi.bios.vendor: LENOVO
dmi.bios.version: EUCN19WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40709 WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo Legion 5 15ARH05
dmi.modalias:
dmi:bvnLENOVO:bvrEUCN19WW:bd05/12/2020:svnLENOVO:pn82B5:pvrLenovoLegion515ARH05:rvnLENOVO:rnLNVNB161216:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrLenovoLegion515ARH05:
dmi.product.family: Legion 5 15ARH05
dmi.product.name: 82B5
dmi.product.sku: LENOVO_MT_82B5_BU_idea_FM_Legion 5 15ARH05
dmi.product.version: Lenovo Legion 5 15ARH05
dmi.sys.vendor: LENOVO
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27.3
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2020-07-02 (12 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
Package: linux (not installed)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=fr_FR.UTF-8
SHELL=/bin/bash
Tags: focal
Uname: Linux 5.8.0-050800rc5-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 lxd plugdev sambashare sudo
_MarkForUpload: True
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