** Changed in: linux (Ubuntu)
Status: Incomplete => Triaged
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https://bugs.launchpad.net/bugs/1732056
Title:
Touchpad stops working after a few seconds in Lenovo ideapad 320
Status in linux package in Ubuntu:
Triaged
Bug description:
=== SRU Justifications ===
[Impact]
Touchpad freezes after a brief usage.
[Fix]
Quote from the commit log:
"The stale cached value written at the final stage undoes the masking.
Fix this by re-reading the register before clearing the interrupt.
I also spotted that the interrupt-clearing code can race against
amd_gpio_irq_mask() / amd_gpio_irq_unmask(), so add locking there.
Presumably this race was leading to the loss of interrupts."
[Test Case]
Touchpad no longer freezes on ideapad 320-15ABR, a new Dell Latitude and
a new Dell Inspiron.
[Regression Potential]
Low. It limits to AMD laptops
=== Original Bug Report ===
I have installed ubuntu bionic on a Lenovo ideapad 320. The touchpad
stops working a few seconds after I log in.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.13.0-16-generic 4.13.0-16.19
ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
Uname: Linux 4.13.0-16-generic x86_64
ApportVersion: 2.20.7-0ubuntu4
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: rebeca 1440 F.... pulseaudio
/dev/snd/controlC0: rebeca 1440 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Mon Nov 13 20:03:41 2017
InstallationDate: Installed on 2017-09-22 (53 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170918)
MachineType: LENOVO 80XS
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-16-generic.efi.signed
root=UUID=1e55f665-bd98-4113-9ae8-ec766bfc424f ro quiet splash vt.handoff=7
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
SourcePackage: linux
UpgradeStatus: Upgraded to bionic on 2017-11-14 (0 days ago)
dmi.bios.date: 05/22/2017
dmi.bios.vendor: LENOVO
dmi.bios.version: 5QCN16WW
dmi.board.asset.tag: No Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40700WIN
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo ideapad 320-15ABR
dmi.modalias:
dmi:bvnLENOVO:bvr5QCN16WW:bd05/22/2017:svnLENOVO:pn80XS:pvrLenovoideapad320-15ABR:rvnLENOVO:rnLNVNB161216:rvrSDK0J40700WIN:cvnLENOVO:ct10:cvrLenovoideapad320-15ABR:
dmi.product.family: ideapad 320-15ABR
dmi.product.name: 80XS
dmi.product.version: Lenovo ideapad 320-15ABR
dmi.sys.vendor: LENOVO
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