This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:
apport-collect 1541671
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/1541671
Title:
backport Microsoft Precision Touchpad palm rejection patch
Status in linux package in Ubuntu:
Incomplete
Bug description:
The Broadwell XPS 13 (with touchpad in the more feature rich I2S mode
that's used in OEM Ubuntu images and the default on newer kernels) and
other systems utilize a touchpad conforming to the Microsoft Precision
Touchpad specification. However, palm rejection on Linux did not work
on relevant systems because support for the confidence bit was not
supported for touchpads following this standard. As a result, palm
rejection does not work on MSPT touchpads, resulting in degraded
functionality for users.
Allen Hung at Dell developed a patch that allows the Linux kernel to
utilize the confidence bit for touchpads reporting themselves as
Microsoft Precision Touchpads. It has been accepted for include in the
4.5 kernel. It looks like the patch has been accepted in the linux-
stable tree (though I do not know what the timeline is for actual
inclusion in stable Linux kernel versions):
https://git.kernel.org/cgit/linux/kernel/git/stable/linux-
stable.git/commit/?id=25a84db15b3f3a24d3ea7d2baf90693bcff34b0c
This request is to include this patch in supported versions of Ubuntu.
I believe it is safe to include this patch as an SRU, which can be
dropped once the patch makes its way into the stable kernel upstream
updates.
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