Touchpad cease to function
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
HWE Next |
New
|
Undecided
|
Unassigned | ||
linux (Ubuntu) |
Confirmed
|
Undecided
|
Unassigned | ||
Bionic |
Confirmed
|
Undecided
|
Unassigned | ||
linux-oem (Ubuntu) |
New
|
Undecided
|
You-Sheng Yang | ||
Bionic |
New
|
Undecided
|
Unassigned |
Bug Description
Touchpad on Dell Latitude 3190 may cease to function unexpectedly some time after logging in GUI.
By some regression tests it's found this was a direct result of commit f840d7f6870d ("Revert \"pinctrl: intel: Initialize GPIO properly when used through irqchip\"") that was included in stable kernel v4.14.38 commit 94c0308279ec and in Ubuntu generic kernel since 4.15.0-24.26 in bug 1775483, in -oem kernel since 4.15.0-1009.
The original upstream bug for that pinctrl fix is at https:/
[Step to reproduce]
1. Turn on I2C debug messages "i2c-hid.debug=1 dyndbg='file drivers/i2c/* +pt' log_buf_len=32M"
2. Boot into GUI, and start dmesg capturing by `dmesg -w | tee dmesg.$(uname -r)`
3. Move fingers around on the touchpad to generate touch events for 1 minute.
[Expected result]
Touch events generated all the time throughout the process.
[Actual result]
Touch event cease to generate after some arbitrary time and there is no way to recover.
--
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
DistributionCha
# This is the distribution channel descriptor for the OEM CDs
# For more information see http://
canonical-
DistroRelease: Ubuntu 18.04
InstallationDate: Installed on 2019-12-20 (9 days ago)
InstallationMedia: Ubuntu 18.04 "Bionic" - Build amd64 LIVE Binary 20180608-09:38
IwConfig:
wlp1s0 no wireless extensions.
lo no wireless extensions.
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 8087:0a2b Intel Corp.
Bus 001 Device 002: ID 0bda:5769 Realtek Semiconductor Corp.
Bus 001 Device 004: ID 062a:4c01 Creative Labs
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Dell Inc. Latitude 3190
Package: linux-oem 4.15.0.1065.69
PackageArchitec
ProcEnviron:
TERM=xterm-
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=
ProcVersionSign
PulseList:
Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied
No PulseAudio daemon running, or not running as session daemon.
RelatedPackageV
linux-
linux-
linux-firmware 1.173.10
Tags: bionic
Uname: Linux 4.15.0-1065-oem x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
_MarkForUpload: True
dmi.bios.date: 09/19/2019
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.9.1
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.
dmi.product.family: Latitude
dmi.product.name: Latitude 3190
dmi.sys.vendor: Dell Inc.
description: | updated |
description: | updated |
description: | updated |
tags: | added: oem-priority originate-from-1846456 somerville |
apport information