Public bug reported: Hi,
ELAN0600 lacks full touch support if not registered with elan_i2c.ko. I've got in touch with Benjamin Tissoires, who kindly provided me with a two-lines patch that fixed the problem for my Lenovo Yoga 3 11 [1]. He has afterwards made the patch publicly available at LKML [2]. Some more information follow, the bug is still reproducible with the latest Vivid's and mainline kernels: ubuntu@ubuntu:~$ uname -a Linux ubuntu 3.16.0-23-generic #31-Ubuntu SMP Tue Oct 21 17:56:17 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux ubuntu@ubuntu:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.10 Release: 14.10 Codename: utopic ubuntu@ubuntu:~$ lsusb Bus 001 Device 002: ID 8087:8001 Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 002 Device 006: ID 8087:07dc Intel Corp. Bus 002 Device 005: ID 1bcf:2c43 Sunplus Innovation Technology Inc. Bus 002 Device 004: ID 04f3:2052 Elan Microelectronics Corp. Bus 002 Device 003: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller Bus 002 Device 002: ID 058f:6387 Alcor Micro Corp. Flash Drive Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Excerpt of /proc/bus/input/devices: I: Bus=0018 Vendor=04f3 Product=0400 Version=0100 N: Name="ELAN0600:00 04F3:0400" P: Phys= S: Sysfs=/devices/pci0000:00/INT3433:00/i2c-8/i2c-ELAN0600:00/0018:04F3:0400.0003/input/input13 U: Uniq= H: Handlers=mouse1 event12 B: PROP=0 B: EV=17 B: KEY=30000 0 0 0 0 B: REL=143 B: MSC=10 ubuntu@ubuntu:~$ grep -i elan /var/log/syslog Feb 17 01:53:37 ubuntu kernel: [ 17.373586] usb 2-5: Manufacturer: ELAN Feb 17 01:53:38 ubuntu kernel: [ 28.061105] input: ELAN Touchscreen as /devices/pci0000:00/0000:00:14.0/usb2/2-5/2-5:1.0/0003:04F3:2052.0001/input/input11 Feb 17 01:53:38 ubuntu kernel: [ 28.067747] hid-multitouch 0003:04F3:2052.0001: input,hiddev0,hidraw0: USB HID v1.10 Device [ELAN Touchscreen] on usb-0000:00:14.0-5/input0 Feb 17 01:53:38 ubuntu kernel: [ 28.272108] i2c_hid i2c-ELAN0600:00: error in i2c_hid_init_report size:633 / ret_size:7 Feb 17 01:53:38 ubuntu kernel: [ 28.274418] i2c_hid i2c-ELAN0600:00: error in i2c_hid_init_report size:69 / ret_size:7 Feb 17 01:53:38 ubuntu kernel: [ 28.274589] input: ELAN0600:00 04F3:0400 as /devices/pci0000:00/INT3433:00/i2c-8/i2c-ELAN0600:00/0018:04F3:0400.0003/input/input13 Feb 17 01:53:38 ubuntu kernel: [ 28.275039] hid-generic 0018:04F3:0400.0003: input,hidraw1: <UNKNOWN> HID v1.00 Mouse [ELAN0600:00 04F3:0400] on Thanks for considering. [1] http://shop.lenovo.com/gb/en/laptops/lenovo/yoga/yoga-3-11/ [2] https://lkml.org/lkml/2015/3/31/929 ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: patch patch-forwarded-upstream -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1439111 Title: Enable full touch support for ELAN0600 touchpad To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1439111/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
