kernel-packages team mailing list archive

[Shih-Yuan Lee <1456881@xxxxxxxxxxxxxxxxxx>]

We found under some extreme system usage that comment #2 can fix the
problem.

Run some application/operation (e.g: Play youtube on background, launch
libreoffice for awhile (about 5-10min) or insert USB to copy some files
: The touchpad cursor were no function after some operation, sometime it
scrolling automatically or keep send press signal.

Without the patch of comment #2, when the issue occurred we also check
the touchpad event on ttyl1 by "evtest", we can found the event keeping
output without move cursor/click touchpad.

Our observation is the HiDPI platform may have more loading cause this
issue and sometimes its also cause xorg crash.

** Attachment added: "Screenshot from 2015-05-27 17_24_59.png"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1456881/+attachment/4406011/+files/Screenshot%20from%202015-05-27%2017_24_59.png

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https://bugs.launchpad.net/bugs/1456881

Title:
  Some touchpads' right button doesn't work under I2C mode, need support
  of clickpads

Status in HWE Next Project:
  In Progress
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Trusty:
  Fix Committed
Status in linux source package in Utopic:
  Fix Committed

Bug description:
  We need to add this support, otherwise some touchpads' right button
  doesn't work under I2C mode.

  commit	015fdaa9f8edd89a456b3331088e1b77ebdad9d0 (patch)
  HID: multitouch: add support of clickpads
  Touchpads that have only one button are called clickpads and should
  be advertised as such by the kernel.

  Signed-off-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
  Tested-by: Jason Ekstrand <jason@xxxxxxxxxxxxxx>
  Signed-off-by: Jiri Kosina <jkosina@xxxxxxx>

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