https://bugs.kde.org/show_bug.cgi?id=455477

--- Comment #3 from Yerrey Dev <yer...@protonmail.com> ---
The actual KCM crash is caused by
https://invent.kde.org/plasma/kscreen/-/blob/master/kcm/output_model.cpp#L396
comparison, where the reported refresh rate is compared with being larger than
bestRefreshRate which is 0. When the reported refresh rate is negative, this
comparison will never trigger and we'll fail at the Q_ASSERT following right
after.

A MR to fix the KCM crash would be trivial, but I've yet to figure out the
reason of the negative refresh rates. Possibly something to do with libxcvt
which was added in https://invent.kde.org/plasma/kwin/-/merge_requests/2235 for
Wayland.

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