I can also confirm this issue. I have two sound cards: my onboard 2-channel HDA card (front:0), and my cardbus Audigy2 (surround51:1). I've set default-sample-channels=6 in daemon.conf, since the Audigy2 refuses to open in multichannel mode if it's already open in stereo mode.
One hopefully useful piece of information: this CPU-eating behavior only occurs when I pause a gstreamer app that's playing to the Audigy2 (surround51:1); if I move the stream to the onboard sound card, the CPU usage goes back to normal. This hints that the issue may originate somewhere in the upmixing PulseAudio does when playing streams on devices with differing numbers of channels. -- PulseAudio fails when Gstreamer is paused https://bugs.launchpad.net/bugs/221038 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs