ouchpad doesn't work properly after Ubuntu Installation

[Felipe Freitas]

Touchpad' incorrectly detected in 'Lenovo s740' after the ubuntu installation.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-60-generic 5.4.0-60.67
ProcVersionSignature: Ubuntu 5.4.0-60.67-generic 5.4.78
Uname: Linux 5.4.0-60-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.14
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: felipe 1451 F.... pulseaudio
 /dev/snd/pcmC0D0p: felipe 1451 F...m pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Wed Jan 13 21:52:13 2021
InstallationDate: Installed on 2021-01-07 (6 days ago)
InstallationMedia: Ubuntu 18.04.5 LTS "Bionic Beaver" - Release amd64 (20200806.1)
MachineType: LENOVO 81RM
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-60-generic root=UUID=32be46bd-d75e-4c0e-a754-56d7e63881ba ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-5.4.0-60-generic N/A
 linux-backports-modules-5.4.0-60-generic N/A
 linux-firmware 1.187.7
SourcePackage: linux
UpgradeStatus: Upgraded to focal on 2021-01-08 (5 days ago)
dmi.bios.date: 07/15/2020
dmi.bios.vendor: LENOVO
dmi.bios.version: BYCN36WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: LNVNB161216
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 Yoga S740-14IIL
dmi.modalias: dmi:bvnLENOVO:bvrBYCN36WW:bd07/15/2020:svnLENOVO:pn81RM:pvrLenovoYogaS740-14IIL:rvnLENOVO:rnLNVNB161216:rvrSDK0J40688WIN:cvnLENOVO:ct10:cvrLenovoYogaS740-14IIL:
dmi.product.family: Yoga S740-14IIL
dmi.product.name: 81RM
dmi.product.sku: LENOVO_MT_81RM_BU_idea_FM_Yoga S740-14IIL
dmi.product.version: Lenovo Yoga S740-14IIL
dmi.sys.vendor: LENOVO

[Felipe Freitas (sincopeiro)]

➜ ~ cat /proc/bus/input/devices
I: Bus=0019 Vendor=0000 Product=0005 Version=0000
N: Name="Lid Switch"
P: Phys=PNP0C0D/button/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0D:00/input/input0
U: Uniq=
H: Handlers=event0
B: PROP=0
B: EV=21
B: SW=1

I: Bus=0019 Vendor=0000 Product=0001 Version=0000
N: Name="Power Button"
P: Phys=PNP0C0C/button/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input1
U: Uniq=
H: Handlers=kbd event1
B: PROP=0
B: EV=3
B: KEY=10000000000000 0

I: Bus=0011 Vendor=0001 Product=0001 Version=ab83
N: Name="AT Translated Set 2 keyboard"
P: Phys=isa0060/serio0/input0
S: Sysfs=/devices/platform/i8042/serio0/input/input2
U: Uniq=
H: Handlers=sysrq kbd event2 leds
B: PROP=0
B: EV=120013
B: KEY=402000000 3803078f800d001 feffffdfffefffff fffffffffffffffe
B: MSC=10
B: LED=7

I: Bus=0019 Vendor=0000 Product=0000 Version=0000
N: Name="Intel HID events"
P: Phys=
S: Sysfs=/devices/platform/INT33D5:00/input/input3
U: Uniq=
H: Handlers=rfkill kbd event3
B: PROP=0
B: EV=13
B: KEY=81000300000000 5000004000 1e294000000020 0
B: MSC=10

I: Bus=0019 Vendor=0000 Product=0000 Version=0000
N: Name="Intel HID 5 button array"
P: Phys=
S: Sysfs=/devices/platform/INT33D5:00/input/input4
U: Uniq=
H: Handlers=kbd event4
B: PROP=0
B: EV=13
B: KEY=2000000000000 0 0 0 0 1000000000000 0 201c000000000000 0
B: MSC=10

I: Bus=0019 Vendor=0000 Product=0000 Version=0000
N: Name="Ideapad extra buttons"
P: Phys=ideapad/input0
S: Sysfs=/devices/pci0000:00/0000:00:1f.0/PNP0C09:00/VPC2004:00/input/input5
U: Uniq=
H: Handlers=rfkill kbd event5
B: PROP=0
B: EV=13
B: KEY=81000800100c03 4400000000300000 0 2
B: MSC=10

I: Bus=0003 Vendor=13d3 Product=56ba Version=9908
N: Name="Integrated Camera: Integrated C"
P: Phys=usb-0000:00:14.0-5/button
S: Sysfs=/devices/pci0000:00/0000:00:14.0/usb3/3-5/3-5:1.0/input/input6
U: Uniq=
H: Handlers=kbd event6
B: PROP=0
B: EV=3
B: KEY=100000 0 0 0

I: Bus=0003 Vendor=13d3 Product=56ba Version=9908
N: Name="Integrated Camera: Integrated I"
P: Phys=usb-0000:00:14.0-5/button
S: Sysfs=/devices/pci0000:00/0000:00:14.0/usb3/3-5/3-5:1.2/input/input7
U: Uniq=
H: Handlers=kbd event7
B: PROP=0
B: EV=3
B: KEY=100000 0 0 0

I: Bus=0019 Vendor=0000 Product=0006 Version=0000
N: Name="Video Bus"
P: Phys=LNXVIDEO/video/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input8
U: Uniq=
H: Handlers=kbd event8
B: PROP=0
B: EV=3
B: KEY=3e000b00000000 0 0 0

I: Bus=0019 Vendor=0000 Product=0006 Version=0000
N: Name="Video Bus"
P: Phys=LNXVIDEO/video/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:3d/LNXVIDEO:01/input/input9
U: Uniq=
H: Handlers=kbd event9
B: PROP=0
B: EV=3
B: KEY=3e000b00000000 0 0 0

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="HDA Intel PCH Mic"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:1f.3/sound/card0/input10
U: Uniq=
H: Handlers=event10
B: PROP=0
B: EV=21
B: SW=10

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="HDA Intel PCH Headphone"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:1f.3/sound/card0/input11
U: Uniq=
H: Handlers=event11
B: PROP=0
B: EV=21
B: SW=4

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: ...

[Alex Murray (alexmurray)]

Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.