This change was made by a bot.
** Changed in: linux (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1793111
Title:
[Asus UX331UAL] Touchpad events become slow and laggy
Status in linux package in Ubuntu:
Confirmed
Bug description:
My laptop's touchpad starts fast and smooth:
ELAN1200:00 04F3:309C Touchpad: Latest 142Hz, Average 141Hz
ELAN1200:00 04F3:309C Touchpad: Latest 142Hz, Average 141Hz
ELAN1200:00 04F3:309C Touchpad: Latest 142Hz, Average 141Hz
But after holding one finger down (click) and moving a second finger,
the stream of events from the kernel slows way down:
ELAN1200:00 04F3:309C Touchpad: Latest 35Hz, Average 47Hz
ELAN1200:00 04F3:309C Touchpad: Latest 47Hz, Average 47Hz
ELAN1200:00 04F3:309C Touchpad: Latest 47Hz, Average 47Hz
ELAN1200:00 04F3:309C Touchpad: Latest 27Hz, Average 46Hz
which is very noticeable on screen. Those measurements are from:
https://gitlab.com/iankelling/evhz but the problem was very obvious on
the desktop before that.
After a while, seemingly randomly, the touchpad will eventually return
to the full speed :/
Possibly related, but maybe not since it's at different times, the
kernel says:
[ 8191.785882] i2c_hid i2c-ELAN1200:00: i2c_hid_get_input: incomplete report
(16/65535)
[ 8256.953046] i2c_hid i2c-ELAN1200:00: i2c_hid_get_input: incomplete report
(16/65535)
[ 8261.013145] i2c_hid i2c-ELAN1200:00: i2c_hid_get_input: incomplete report
(16/65535)
ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: linux-image-4.18.0-7-generic 4.18.0-7.8
ProcVersionSignature: Ubuntu 4.18.0-7.8-generic 4.18.5
Uname: Linux 4.18.0-7-generic x86_64
ApportVersion: 2.20.10-0ubuntu11
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: dan 1886 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Tue Sep 18 11:56:14 2018
InstallationDate: Installed on 2018-09-11 (6 days ago)
InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Alpha amd64 (20180822)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 8087:0a2b Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: ASUSTeK COMPUTER INC. ZenBook 13 UX331UAL
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.18.0-7-generic
root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=1
RelatedPackageVersions:
linux-restricted-modules-4.18.0-7-generic N/A
linux-backports-modules-4.18.0-7-generic N/A
linux-firmware 1.175
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/02/2018
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: UX331UAL.305
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: UX331UAL
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrUX331UAL.305:bd03/02/2018:svnASUSTeKCOMPUTERINC.:pnZenBook13UX331UAL:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX331UAL:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.family: ZenBook
dmi.product.name: ZenBook 13 UX331UAL
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
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