Touchpad stops working after reboot on Apollo Lake
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Linux |
Confirmed
|
Medium
|
|||
linux (Ubuntu) |
Triaged
|
Medium
|
Unassigned | ||
Bionic |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
===SRU Justification===
Hantick touchpad stops working after reboot.
[Fix]
Disable runtime power management for the touchpad.
[Test]
User confirmed it fixed the issue.
Some users reported it doesn't work for them, I'll ask them to file new
bugs for different touchpads.
[Regression Potential]
Low. Disable runtime power management doesn't affect devivce's
funtionality. In general desktop usage the graphical session opens the
touchpad HID device so the touchpad never get runtime suspended, so it
won't hurt power in this case.
===Original Bug Report===
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_
[ 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?
CVE References
Changed in linux (Ubuntu): | |
status: | Confirmed → Triaged |
tags: | added: patch |
Changed in linux: | |
importance: | Unknown → Medium |
status: | Unknown → Confirmed |
Changed in linux (Ubuntu Bionic): | |
status: | New → In Progress |
Changed in linux (Ubuntu Bionic): | |
status: | In Progress → Fix Committed |
tags: | added: cscc |
This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1728244
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.