Lukas <> changed:

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--- Comment #1 from Lukas <> ---
I am experiencing similar issues with kwin_x11 and plasmashell. Both processes
constantly eat up about 20% of CPU time. kwin_x11 CPU usage returns back to
normal once I kill plasmashell. The issue arises during regular operation
without secondary monitor although I have not testet it with a dock. An strace
of plasmashell showed that it was pretty busy with various DRM systemcalls to
the i915 Intel graphics driver although I have no idea whether this is in any
way related to the issue.

The issue first occurred after a system upgrade which comprised the following
Qt 5.8 -> Qt 5.9
kwin 5.10.1 -> 5.10.2
plasma-workspace 5.10.1 -> 5.10.2

I am running an Arch Linux installation on a Thinkpad T470:
Intel Core i5-7200u
Intel HD Graphics 620

A colleague with a Thinkpad X1 (also Intel CPU and Graphics) experiences the
same issue. Please let me know if I can provide you with further information.

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