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Message #156156
[Bug 1534661] Missing required logs.
This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:
apport-collect 1534661
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.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1534661
Title:
regression: Cypress touchpad driver (cyapa) ignores events after bieng
idle for 2 seconds
Status in linux package in Ubuntu:
Incomplete
Bug description:
Driver update in Kernel 4.2 causes severe usability issues with
Cypress touchpad (cyapa) used on Acer C7x0 chromebooks.
The driver in question is ignoring events during entering/leaving idle
status which from user standpoint seems like touchpad is not reacting
to actions performed after touchpad is not used for more then 2
seconds.
The bug was partially fixed in 4.3 and additional fix was pushed to
upcoming 4.5.
After direct communication with driver maintainer, we came up with 2 patches fixing the problem.
Since 4.2 is EOL now, the patches cannot be pushed into upstream therefor are posted here.
First patch is a backport of driver from 4.3 to 4.2 and the second
patch is additional fix that should be applied on 4.3/4.4.
Tested:
- 4.2.0-23-generic #28~14.04.1-Ubuntu on Acer C710
- 4.4 mainline on Acer C720p
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References