Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.14 kernel[0].

If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag:
'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as
"Confirmed".


Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.14-rc7

** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/1728244

Title:
  Touchpad stops working after reboot on Apollo Lake

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  On the Jumper EZBook 3 Pro (V4) laptop, using an Apollo Lake N3450
  processor, if you install Ubuntu 17.10 (or less) with isorespin and
  use rEFInd as bootloader (this is the only way to get linux booting on
  this laptop) everything works out of the box, but after a reboot or
  two the touchpad stops working. Both in Ubuntu and Windows 10. The
  only way to restore functionality is to boot from usb key ubuntu 17.10
  respined, or disassemble laptop and detach-reattach battery cable.
  This is mesg | grep i2c_hid:

  
  [ 2056.460636] i2c_hid i2c-SYNA3602:00: i2c_hid_get_input: incomplete report 
(27/34)
  [ 3077.604699] i2c_hid i2c-SYNA3602:00: failed to reset device.
  [ 3077.605473] dpm_run_callback(): i2c_hid_resume+0x0/0xe0 [i2c_hid] returns 
-61
  [ 3080.468156] i2c_hid i2c-SYNA3602:00: i2c_hid_get_input: incomplete report 
(27/34)

  
  uname -rvps
  Linux 4.10.0-32-generic #36~16.04.1-Ubuntu SMP Wed Aug 9 09:19:02 UTC 2017 
x86_64

  There has to be a bug in the kernel. Any way to avoid this?

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