Comment 36 for bug 226342

The problem from the OP is not present in Jaunty and has been resolved in Hardy and Intrepid but, since you ask I have experienced some other more distressing problems with pulseaudio/alsa in Jaunty. I have multiple sound devices, a mobo ALC883, a C-Media 8768 PCI card, a Plantronics USB headest that is reported as a C-Media, a HDMI output on my gpu (ati HD3650), and a Logitec USB webcam. Sound playback works Ok with any single device but when I try to use Simultaneous Output, which I am in need of, Pulseaudio is forced to exit after a few seconds and I find many of the following sort of messages in my logs.

I do not experience these problems in either Hardy or Intrepid. If you would like me to do anything to help resolve this issue please let me know.

Mar 2 09:12:43 mark-jaunty-desktop pulseaudio[4408]: asyncq.c: q overrun, queuing locally
Mar 2 09:12:43 mark-jaunty-desktop last message repeated 24 times

Feb 25 16:44:36 mark-jaunty-desktop pulseaudio[5553]: asyncq.c: q overrun, queuing locally
Feb 25 16:44:46 mark-jaunty-desktop last message repeated 31 times
Feb 25 16:44:46 mark-jaunty-desktop pulseaudio[5553]: cpulimit.c: Received request to terminate due to CPU overload.
Feb 25 16:44:47 mark-jaunty-desktop pulseaudio[6100]: alsa-util.c: Device hw:3 doesn't support 2 channels, changed to 1.
Feb 25 16:44:47 mark-jaunty-desktop pulseaudio[6100]: alsa-util.c: Device hw:2 doesn't support 44100 Hz, changed to 16000 Hz.
Feb 25 16:44:47 mark-jaunty-desktop pulseaudio[6100]: alsa-util.c: Device hw:2 doesn't support 2 channels, changed to 1.
Feb 25 16:44:57 mark-jaunty-desktop pulseaudio[6100]: cpulimit.c: Received request to terminate due to CPU overload.
Feb 25 16:50:02 mark-jaunty-desktop /USR/SBIN/CRON[6141]: (root) CMD ([ -x /usr/sbin/update-motd ] && /usr/sbin/update-motd 2>/dev/null)
Feb 25 16:50:56 mark-jaunty-desktop pulseaudio[6385]: alsa-util.c: Device hw:3 doesn't support 2 channels, changed to 1.
Feb 25 16:50:56 mark-jaunty-desktop pulseaudio[6385]: alsa-util.c: Device hw:2 doesn't support 44100 Hz, changed to 16000 Hz.
Feb 25 16:50:56 mark-jaunty-desktop pulseaudio[6385]: alsa-util.c: Device hw:2 doesn't support 2 channels, changed to 1.
Feb 25 16:53:40 mark-jaunty-desktop pulseaudio[6385]: asyncq.c: q overrun, queuing locally
Feb 25 16:53:52 mark-jaunty-desktop last message repeated 187 times
Feb 25 16:53:55 mark-jaunty-desktop pulseaudio[6385]: cpulimit.c: Received request to terminate due to CPU overload.
Feb 25 16:53:56 mark-jaunty-desktop pulseaudio[6385]: module-rescue-streams.c: Failed to move source output 0 "PulseAudio Volume Control" to alsa_input.pci_13f6_111_sound_card_0_alsa_capture_0.
Feb 25 16:53:56 mark-jaunty-desktop pulseaudio[6385]: module-rescue-streams.c: Failed to move source output 1 "PulseAudio Volume Control" to alsa_input.pci_13f6_111_sound_card_0_alsa_capture_0.
Feb 25 16:53:56 mark-jaunty-desktop pulseaudio[6385]: module-rescue-streams.c: Failed to move source output 2 "PulseAudio Volume Control" to alsa_input.pci_1002_4383_sound_card_0_alsa_capture_0.
Feb 25 16:53:56 mark-jaunty-desktop pulseaudio[6385]: module-rescue-streams.c: Failed to move source output 3 "PulseAudio Volume Control" to alsa_output.usb_device_d8c_c_noserial_if0_sound_card_0_alsa_playback_0.monitor.
Feb 25 16:53:56 mark-jaunty-desktop pulseaudio[6385]: module-rescue-streams.c: Failed to move source output 4 "PulseAudio Volume Control" to alsa_input.usb_device_d8c_c_noserial_if0_sound_card_0_alsa_capture_0.
Feb 25 16:53:56 mark-jaunty-desktop pulseaudio[6385]: module-rescue-streams.c: Failed to move source output 5 "PulseAudio Volume Control" to auto_null.monitor.
Feb 25 16:53:56 mark-jaunty-desktop pulseaudio[6385]: module-rescue-streams.c: Failed to move source output 6 "PulseAudio Volume Control" to alsa_input.usb_device_46d_8d7_noserial_if1_sound_card_0_alsa_capture_0.
Feb 25 16:53:57 mark-jaunty-desktop pulseaudio[6447]: alsa-util.c: Device hw:3 doesn't support 2 channels, changed to 1.
Feb 25 16:53:57 mark-jaunty-desktop pulseaudio[6447]: alsa-util.c: Device hw:2 doesn't support 44100 Hz, changed to 16000 Hz.
Feb 25 16:53:57 mark-jaunty-desktop pulseaudio[6447]: alsa-util.c: Device hw:2 doesn't support 2 channels, changed to 1.
Feb 25 16:54:08 mark-jaunty-desktop pulseaudio[6447]: cpulimit.c: Received request to terminate due to CPU overload.
Feb 25 16:54:19 mark-jaunty-desktop pulseaudio[6481]: alsa-util.c: Device hw:3 doesn't support 2 channels, changed to 1.
Feb 25 16:54:19 mark-jaunty-desktop pulseaudio[6481]: alsa-util.c: Device hw:2 doesn't support 44100 Hz, changed to 16000 Hz.
Feb 25 16:54:19 mark-jaunty-desktop pulseaudio[6481]: alsa-util.c: Device hw:2 doesn't support 2 channels, changed to 1.
Feb 25 16:59:40 mark-jaunty-desktop pulseaudio[6481]: asyncq.c: q overrun, queuing locally
Feb 25 16:59:40 mark-jaunty-desktop last message repeated 4 times