This is happening to me too on an Acer Aspire 5 A515-51G-515J. Adding "acpi_osi=" to GRUB_CMDLINE_LINUX_DEFAULT left me without a trackpad (it eliminated the log messages too, of course!).
$ uname -a Linux dev 4.15.0-33-generic #36~16.04.1-Ubuntu SMP Wed Aug 15 17:21:05 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 16.04.5 LTS Release: 16.04 Codename: xenial -- 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/1784152 Title: i2c_hid_get_input floods system logs Status in linux package in Ubuntu: Confirmed Bug description: Ubuntu 4.15.0-29.31-generic 4.15.18 After upgrading to kernel version 4.15.0-29 from 4.15.0-23, the system logs are flooded whenever I move the cursor with my touchpad. It looks like this: i2c_hid i2c-ELAN1010:00: i2c_hid_get_input: incomplete report (14/65535) i2c_hid i2c-ELAN1010:00: i2c_hid_get_input: incomplete report (14/65535) i2c_hid i2c-ELAN1010:00: i2c_hid_get_input: incomplete report (14/65535) i2c_hid i2c-ELAN1010:00: i2c_hid_get_input: incomplete report (14/65535) etc... This problem did not occur on the previous kernel version so there must have been a change to the "drivers/hid/i2c-hid/i2c-hid.c" file. This seems to be fixed in a recent commit here: https://github.com/torvalds/linux/commit/ef6eaf27274c0351f7059163918f3795da13199c I am currently running the older kernel version but would still like to be up to date without this flooding happening. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1784152/+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
