Goodix touchpad may drop first input event
Bug #1840075 reported by
Kai-Heng Feng
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Bionic |
Fix Released
|
Undecided
|
Unassigned | ||
Disco |
Fix Released
|
Undecided
|
Unassigned | ||
Eoan |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
[Impact]
If a touchpad is connected to Intel LPSS PCI device, sometimes the first tap event can be dropped. Goodix touchpad has a rather small buffer so the time its parent devices spend in resuming need to be small.
[Fix]
Remove Intel LPSS D3cold delay, which is the bottleneck of the situation.
[Test]
Intel had tested the patch and the result is positive.
[Regression Potential]
Low. Intel internally tested this so it should be rather safe.
CVE References
Changed in linux (Ubuntu Eoan): | |
status: | Incomplete → Fix Committed |
Changed in linux (Ubuntu Bionic): | |
status: | Incomplete → Fix Committed |
Changed in linux (Ubuntu Disco): | |
status: | Incomplete → Fix Committed |
tags: |
added: verification-done-bionic verification-done-disco removed: verification-needed-bionic verification-needed-disco |
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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 1840075
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.