Public bug reported:
After some kernel update on Ubuntu LTS 20 the touchpad was not detected.
Laptop model - Lenovo Legion Y540.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-48-generic 5.4.0-48.52
ProcVersionSignature: Ubuntu 5.4.0-48.52-generic 5.4.60
Uname: Linux 5.4.0-48-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.9
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: shivanshu 4310 F.... pulseaudio
/dev/snd/controlC1: shivanshu 4310 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Tue Sep 29 08:59:30 2020
MachineType: LENOVO 81SY
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-48-generic
root=UUID=cde879a6-91ea-4acc-b31a-59db4b57ed42 ro acpi_osi= acpi_backlight=intel
RelatedPackageVersions:
linux-restricted-modules-5.4.0-48-generic N/A
linux-backports-modules-5.4.0-48-generic N/A
linux-firmware 1.187.3
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/19/2020
dmi.bios.vendor: LENOVO
dmi.bios.version: BHCN38WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: SDK0Q55722 WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo Legion Y540-15IRH-PG0
dmi.modalias:
dmi:bvnLENOVO:bvrBHCN38WW:bd05/19/2020:svnLENOVO:pn81SY:pvrLenovoLegionY540-15IRH-PG0:rvnLENOVO:rnLNVNB161216:rvrSDK0Q55722WIN:cvnLENOVO:ct10:cvrLenovoLegionY540-15IRH-PG0:
dmi.product.family: Legion Y540-15IRH-PG0
dmi.product.name: 81SY
dmi.product.sku: LENOVO_MT_81SY_BU_idea_FM_Legion Y540-15IRH-PG0
dmi.product.version: Lenovo Legion Y540-15IRH-PG0
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
** Attachment added: "Devices which were detected."
https://bugs.launchpad.net/bugs/1897664/+attachment/5415093/+files/devices
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https://bugs.launchpad.net/bugs/1897664
Title:
Touchpad is not detected.
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