My system was doing the same thing. It went from working properly one minute then broken for no reason. Very high CPU usage for pulseaudio, polkitd, dbus-daemon. PulseAudio sound was stuttering. Trying to edit the sound settings in the volume control was impossible because it kept losing the connection to PulseAudio. Syslog was full of thousands of this message repeated:
[pulseaudio] alsa-mixer.c: Failed to set switch of IEC958: Operation not permitted I've had issues on this system where the sound output would randomly switch from analog out to some other method or even another device like HDMI which I don't use. I believe due to the plug auto-detection on the audio connector. So I unplugged, replugged, and jiggled the audio connector on the back of the computer and that fixed everything. I guess the plug was loose or the motherboard is buggy and doesn't properly detect when an analog plug is in the audio connector. This was causing pulseaudio to go haywire and hammer the system (not a surprise considering the history of that software). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/207135 Title: pulseaudio uses too much CPU To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/207135/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
