I just updated to Fedora 28 and noticed that pulseaudio is using constantly 4%+ cpu while no audio is in use. I am using KDE plasma and this is Lenovo Thinkpad T450s. One observation is that if I kill pulseaudio it is automatically restarted but it no longer has the cpu usage. It sounds like it is not completing something during the initial start.
This has been reported elsewhere: https://bbs.archlinux.org/viewtopic.php?id=222857 Following that removing speech-dispatcher solves the problem. But of course this is not the real solution.
Also, the problem is only happening on my laptop Lenovo T450s but not on any of my desktop machines.
I do killall speech-dispatcher And it seems fine after that. I'm still having this issue on Fedora 29. Speech-dispatcher is running for no reasons, using cpu.
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Fedora 28 changed to end-of-life (EOL) status on 2019-05-28. Fedora 28 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed.