https://bugs.kde.org/show_bug.cgi?id=364061
--- Comment #4 from DimanNe <dima...@gmail.com> --- I have recently encountered this problem again at my notebook. System info: plasmashell 5.5.5 OS: Kubuntu 16.04 Also, I have two (physical) monitors, and I noticed this problem began to arise after I detached/attached notebook from dock station or after hibernation Backtraces, perf top: I ran "top -H" and it said there are two threads on my system, which are eating CPU - plasmashell and Xorg, so here is "hottest" backtraces of these threads collected with perf top -t 3136 -d 5 --call-graph dwarf (where 3136 is thread Id from top output) Thread of plasmashell - http://pastebin.com/GPMkrWz8 (see text after RAW Paste Data) Thread of Xorg - http://pastebin.com/ZH0x7F7i (see text after RAW Paste Data) -- You are receiving this mail because: You are watching all bug changes.