Correct, please remove that "i8042.nopnp=1" parameter from my previous
comment. Use following parameters instead:
"dyndbg=file drivers/input/* +pt" i8042.debug=1 log_buf_len=32M
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1885270
Title:
Touchpad stopped working after upgrading to Ubuntu 20.04
Status in linux package in Ubuntu:
Incomplete
Bug description:
When I upgraded to Ubuntu 20.04 my touchpad stopped working. When I
used the command xinput to list the input devices there was a PS/2
Generic Mouse registered instead of my Lenovo Yoga 13 touchpad. I
tried to search for the same on the askubuntu forum. I got the answer
that to try and remove psmouse and then again add it using the command
sudo modprobe -r psmouse; sudo modprobe psmouse
This initially solved my problem but later on the same issue arose
after restarting the machine. The touchpad also is again reported as a
generic mouse if the system is suspended.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-39-generic 5.4.0-39.43
ProcVersionSignature: Ubuntu 5.4.0-39.43-generic 5.4.41
Uname: Linux 5.4.0-39-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: lokesh 1790 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Fri Jun 26 16:45:45 2020
InstallationDate: Installed on 2019-08-15 (315 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
MachineType: LENOVO Mocca 2.0
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-39-generic
root=UUID=a610e76e-890e-442a-b764-c81d6becd466 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-5.4.0-39-generic N/A
linux-backports-modules-5.4.0-39-generic N/A
linux-firmware 1.187
SourcePackage: linux
UpgradeStatus: Upgraded to focal on 2020-05-15 (42 days ago)
dmi.bios.date: 02/28/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: 66CN55WW
dmi.board.asset.tag: No Asset Tag
dmi.board.name: INVALID
dmi.board.vendor: LENOVO
dmi.board.version: 31900006Win8 STD MBR IPG
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Yoga 13
dmi.modalias:
dmi:bvnLENOVO:bvr66CN55WW:bd02/28/2013:svnLENOVO:pnMocca2.0:pvrYoga13:rvnLENOVO:rnINVALID:rvr31900006Win8STDMBRIPG:cvnLENOVO:ct10:cvrYoga13:
dmi.product.family: IDEAPAD
dmi.product.name: Mocca 2.0
dmi.product.sku: LENOVO_BI_IDEAPAD66
dmi.product.version: Yoga 13
dmi.sys.vendor: LENOVO
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