[Wayland-bugs] [Bug 106716] Palm detection on Precision Touchpads causes spurious taps

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106716

Matt Mayfield <mdmayfield at yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|1                           |0
             Status|NEEDINFO                    |UNCONFIRMED

--- Comment #2 from Matt Mayfield <mdmayfield at yahoo.com> ---
Thanks for the reply Peter.

This touchpad (a Precision Touchpad) does provide firmware palm detection, via
the Confidence bit as per
https://docs.microsoft.com/en-us/windows-hardware/design/component-guidelines/touchpad-windows-precision-touchpad-collection
.

However the kernel never reports it as MT_TOOL_PALM, because the patch that
would enable this was never committed to hid-multitouch.c. This was last
August: https://patchwork.kernel.org/patch/9894797/  You were the last person
to comment on that patch thread (in favor of the patch, it seemed) but it
seemed to be forgotten after that.

Having this patch in mainline would be of great benefit to laptop users as the
Precision Touchpad becomes more common.

If there is no workaround to detect the Confidence bit in userspace with the
kernel as-is, would you possibly be willing to raise the subject again with the
kernel developers? I imagine you would more likely be taken seriously there
than I would.

Thank you again, and please let me know if there is anything else I can do to
help.

Matt

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