@kaihengfeng, do those new projects find the problem is better when AC power is unplugged?
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1793111/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
