https://bugs.kde.org/show_bug.cgi?id=411877

lo...@kde.bt.alestan.publicvm.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|5.16.4                      |5.20.4

--- Comment #5 from lo...@kde.bt.alestan.publicvm.com ---
Yes, it's still a problem in 5.19 and 5.20.  I assume in 5.21 as well (5.21 is
not available in gentoo yet), but I doubt this has been spontaneously fixed
after a year and 3 months.

It is Wayland specific.  Under X11, touchscreen input is translated by the X
server into generic mouse input, so kwin doesn't interface with libinput
directly.  Under wayland, kwin "talks" to libinput, using
libinput/connection.cpp.  Line 614 is where the touchscreen is assigned to the
first screen if it can't guess which screen to use.  Since I'm on gentoo, I
just tossed a patch into my user patches to hardcode it to the right screen.

As I wrote in my third message (2019-09-20), I'm happy to turn my patch into a
proper fix, since I have hardware which needs it and the programming skill to
write it, but I want to know there's a reasonable chance of getting the fix
included before I go to the work.

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