User-Agent:       Opera/9.80 (X11; Linux x86_64) Presto/2.12.388 Version/12.16
Build Identifier: 

please note that the component probably should be "kde5 workspace", but that
was missing in the list.

with a single display, kde operates ok. very often, when another display is
attached, plasma-desktop crashes. both konsole and kwrite also crash at
seemingly random times (for example, after the second display is attached for
the first time, moving konsole to the second display and attempting to select
text in it immediately crashes).

as second display is attached and removed, and applications used, they crash
often, although at other times they work just fine during the same operations.

quite a blocker for people who use second display sometimes, there seem to be a
few kde bugreports :

https://bugs.kde.org/show_bug.cgi?id=340267
https://bugs.kde.org/show_bug.cgi?id=341497 (and a gazillion of bugreports
marked as duplicates of it)
https://bugs.kde.org/show_bug.cgi?id=345544

an ubuntu bugreport :
https://bugs.launchpad.net/ubuntu/+source/qtdeclarative-opensource-src/+bug/1450137

these reports seem to point at the problem being in qt, and there's a whole
bunch of even more upstream reports in qt :

https://bugreports.qt.io/browse/QTBUG-42985
https://bugreports.qt.io/browse/QTBUG-46024
https://bugreports.qt.io/browse/QTBUG-47041
https://bugreports.qt.io/browse/QTBUG-47385

according to some of the reports, at least a few problems should be fixed in
latest qt 5.5, although, according to some, not all of them.

in any case, it might be a good idea to upgrade to qt 5.5.0 for leap, possibly
5.5.1, if it comes out in time - if not, patches for those crashes would have
to be backported...

Reproducible: Sometimes