https://bugs.kde.org/show_bug.cgi?id=511656

--- Comment #3 from Ángel Navarro <[email protected]> ---
The technician applied glue to the touchscreen so I can't reproduce it by
myself so I will tell you what I saw in the logs and how exactly I could
reproduce it.

1. As the touchscreen was hanging on one corner, the sensors would detect a
really rapid, repeated and holding click on one point in the upper part of the
screen, which I can't click fast enough and close enough to replicate.
I know this thanks to the "Show touch points" effect in Plasma, which showed a
fast flashing blue point at the top and all my actual clicks turned red, which
seems to mean "second click".

2. After a while, a minute or something, even if I tried to unbend the screen,
the laptop would start to ignore all of the touchscreen clicks, so the flashing
blue dot disappears but also the red one and also programs and Plasma itself
stopped responding to all kinds of clicks, left and right, but somehow gestures
still worked, so I can zoom the screen in, move the mouse around, change
virtual desktops.

The only part where clicks remain working were on Overview. Everything else
ignores clicks.

3. When I checked journalctl -b, it showed:

Touchpad: kernel bug: Touch jump detected and discarded.

So many times after that happened. The only way to get click working again is
to log out and in.

If I can reproduce the issue by hand, I'll be happy to include that info as
well, but unfortunately it is too late. But I think that the main issue should
still be fixed: Plasma should not start to ignore clicks if it receives a
sudden rush of holding click events.

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