I have a Logitech audiohub, which is a USB sound device supported by alsa. Since upgrading pulseaudio from 0.9.15 to 0.9.17, the device disappears after a suspend/resume cycle. Plugging and unplugging the device does not help. The device still works in that I can play directly through alsa. If I kill pulseaudio and restart it, it sees the USB device again. I used to have no problem suspending and resuming the PC when 0.9.15 was installed. Here's the output of -vv: D: alsa-sink.c: Wakeup from ALSA! I: alsa-sink.c: Underrun! I: alsa-sink.c: Increasing minimal latency to 1.00 ms D: alsa-sink.c: Latency set to 20.00ms D: alsa-sink.c: hwbuf_unused=380160 D: alsa-sink.c: setting avail_min=95521 D: alsa-sink.c: Latency set to 20.00ms D: alsa-sink.c: hwbuf_unused=380160 D: alsa-sink.c: setting avail_min=95521 D: alsa-util.c: Got POLLERR from ALSA W: alsa-util.c: Got POLLNVAL from ALSA D: alsa-util.c: PCM state is DISCONNECTED I: (alsa-lib)pcm_hw.c: SNDRV_PCM_IOCTL_DROP failed I: (alsa-lib)pcm_hw.c: SNDRV_PCM_IOCTL_PREPARE failed W: alsa-util.c: Could not recover from POLLERR|POLLNVAL|POLLHUP with snd_pcm_prepare(): No such device I: module.c: Unloading "module-alsa-sink" (index: #4). D: module-always-sink.c: Autoloading null-sink as no other sinks detected. I: module-device-restore.c: Restoring volume for sink auto_null. I: module-device-restore.c: Restoring mute state for sink auto_null. I: sink.c: Created sink 1 "auto_null" with sample spec s16le 2ch 44100Hz and channel map front-left,front-right I: sink.c: device.description = "Dummy Output" I: sink.c: device.class = "abstract" I: sink.c: device.icon_name = "audio-card" I: source.c: Created source 1 "auto_null.monitor" with sample spec s16le 2ch 44100Hz and channel map front-left,front-right I: source.c: device.description = "Monitor of Dummy Output" I: source.c: device.class = "monitor" I: source.c: device.icon_name = "audio-input-microphone" D: module-null-sink.c: Thread starting up D: module-suspend-on-idle.c: Sink auto_null becomes idle, timeout in 5 seconds. I: module.c: Loaded "module-null-sink" (index: #18; argument: "sink_name=auto_null sink_properties='device.description="Dummy Output"'"). D: module-rescue-streams.c: No sink inputs to move away. D: module-rescue-streams.c: No evacuation source found. D: core-subscribe.c: Dropped redundant event due to change event. D: module-suspend-on-idle.c: Sink alsa_output.0.analog-stereo becomes idle, timeout in 5 seconds. D: core.c: Hmm, no streams around, trying to vacuum. I: source-output.c: Freeing output 0 "Peak detect" D: core-subscribe.c: Dropped redundant event due to remove event. D: alsa-sink.c: Thread shutting down I: sink.c: Freeing sink 0 "alsa_output.0.analog-stereo" I: source.c: Freeing source 0 "alsa_output.0.analog-stereo.monitor" I: (alsa-lib)pcm_hw.c: SNDRV_PCM_IOCTL_DROP failed I: (alsa-lib)pcm_hw.c: SNDRV_PCM_IOCTL_DROP failed I: (alsa-lib)pcm_hw.c: SNDRV_PCM_IOCTL_HW_FREE failed I: module.c: Unloaded "module-alsa-sink" (index: #4). D: core-subscribe.c: Dropped redundant event due to change event. D: module-stream-restore.c: Not restoring device for stream source-output-by-application-id:org.PulseAudio.pavucontrol, because already set D: module-intended-roles.c: Not setting device for stream Peak detect, because already set. D: module-suspend-on-idle.c: Sink auto_null becomes busy. D: resampler.c: Channel matrix: D: resampler.c: I00 I01 D: resampler.c: +------------ D: resampler.c: O00 | 1.000 1.000 I: remap.c: Using generic matrix remapping I: resampler.c: Using resampler 'peaks' I: resampler.c: Using float32le as working format. D: memblockq.c: memblockq requested: maxlength=33554432, tlength=0, base=4, prebuf=0, minreq=1 maxrewind=0 D: memblockq.c: memblockq sanitized: maxlength=33554432, tlength=33554432, base=4, prebuf=0, minreq=4 maxrewind=0 I: source-output.c: Created output 2 "Peak detect" on auto_null.monitor with sample spec float32le 1ch 25Hz and channel map mono D: memblockq.c: memblockq requested: maxlength=4194304, tlength=0, base=4, prebuf=1, minreq=0 maxrewind=0 D: memblockq.c: memblockq sanitized: maxlength=4194304, tlength=4194304, base=4, prebuf=4, minreq=4 maxrewind=0 I: protocol-native.c: Final latency 60.00 ms = 40.00 ms + 20.00 ms D: bluetooth-util.c: dbus: interface=org.bluez.Manager, path=/, member=AdapterAdded D: bluetooth-util.c: Adapter /org/bluez/2426/hci0 created D: module-console-kit.c: dbus: interface=org.bluez.Manager, path=/, member=AdapterAdded
