[Bug 1592668] Re: plasmashell is eating 100% cpu and all UI is slow

[Christian Treczoks]

Just updated to Kubuntu 17.4, and plasmashell is an epic disaster. On
first boot, plasmashell ate 21 cpu minutes(!) before it became halfway
responsive, but failed to render about half the letters in the system
tray as well as in the startup menu. I killed and restared plasmashell,
and it "only" ate 7 cpu minutes. All while running at 80+% cpu usage.

I have already killed bluetooth service, but this did not really make a
difference.

And yes, plasmashell has always been a cpu hog, from 14.4 over 16.4, but
at the moment, it is intolerable. WTF is this program doing there,
burning CPU cycles for no apparent reasons? Did someone include a
bitcoin miner for the kubuntu project into the startup? ;-)

As I have no idea what kind of information you need to debug this, just
tell me what and how to get it, and I will provide. I want this issue
gone for good. And it looks as if I'm not alone...

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https://bugs.launchpad.net/bugs/1592668

Title:
  plasmashell is eating 100% cpu and all UI is slow

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