I didn't experience this in any other program yet, though it seems to be as you said, a lower level problem. In the /var/log/ folder were no logs that i could connect to audio at all.
I did however run "pulseaudio -vvv" which is I believe debug mode or something similar. In the log that i got from that as soon as the sound gets choppy the log gets flooded with the following messages:
Code: Select all
D: [pulseaudio] core.c: Hmm, no streams around, trying to vacuum.
D: [pulseaudio] protocol-dbus.c: Interface org.PulseAudio.Core1.Stream removed from object /org/pulseaudio/core1/playback_stream264
I: [pulseaudio] sink-input.c: Freeing input 264 "ALSA Playback"
I: [pulseaudio] module-stream-restore.c: Restoring device for stream sink-input-by-application-name:ALSA plug-in [FTL].
D: [pulseaudio] module-intended-roles.c: Not setting device for stream ALSA Playback, because already set.
I: [pulseaudio] sink-input.c: Trying to change sample rate
I: [pulseaudio] module-stream-restore.c: Restoring mute state for sink input sink-input-by-application-name:ALSA plug-in [FTL].
D: [pulseaudio] module-suspend-on-idle.c: Sink alsa_output.usb-Logitech_Logitech_G930_Headset-00-Headset.iec958-stereo becomes busy, resuming.
I: [pulseaudio] resampler.c: Forcing resampler 'copy', because of fixed, identical sample rates.
I: [pulseaudio] resampler.c: Using resampler 'copy'
I: [pulseaudio] resampler.c: Using s16le as working format.
D: [pulseaudio] resampler.c: Resampler:
D: [pulseaudio] resampler.c: rate 44100 -> 44100 (method copy),
D: [pulseaudio] resampler.c: format float32le -> s16le (intermediate s16le),
D: [pulseaudio] resampler.c: channels 2 -> 2 (resampling 2)
D: [pulseaudio] memblockq.c: memblockq requested: maxlength=33554432, tlength=0, base=4, prebuf=0, minreq=1 maxrewind=0
D: [pulseaudio] memblockq.c: memblockq sanitized: maxlength=33554432, tlength=33554432, base=4, prebuf=0, minreq=4 maxrewind=0
I: [pulseaudio] sink-input.c: Created input 265 "ALSA Playback" on alsa_output.usb-Logitech_Logitech_G930_Headset-00-Headset.iec958-stereo with sample spec float32le 2ch 44100Hz and channel map front-left,front-right
I: [pulseaudio] sink-input.c: media.name = "ALSA Playback"
I: [pulseaudio] sink-input.c: application.name = "ALSA plug-in [FTL]"
I: [pulseaudio] sink-input.c: native-protocol.peer = "UNIX socket client"
I: [pulseaudio] sink-input.c: native-protocol.version = "28"
I: [pulseaudio] sink-input.c: application.process.id = "1123"
I: [pulseaudio] sink-input.c: application.process.user = "fabian"
I: [pulseaudio] sink-input.c: application.process.host = "QUASAR"
I: [pulseaudio] sink-input.c: application.process.binary = "FTL"
I: [pulseaudio] sink-input.c: application.language = "C"
I: [pulseaudio] sink-input.c: window.x11.display = ":0"
I: [pulseaudio] sink-input.c: application.process.machine_id = "fd99aa52db0f4aa6b393c3b235eef24c"
I: [pulseaudio] sink-input.c: application.process.session_id = "1"
I: [pulseaudio] sink-input.c: module-stream-restore.id = "sink-input-by-application-name:ALSA plug-in [FTL]"
I: [pulseaudio] protocol-native.c: Requested tlength=40,00 ms, minreq=10,00 ms
D: [pulseaudio] protocol-native.c: Early requests mode enabled, configuring sink latency to minreq.
D: [pulseaudio] protocol-native.c: Requested latency=10,00 ms, Received latency=26,00 ms
D: [pulseaudio] memblockq.c: memblockq requested: maxlength=4194304, tlength=27520, base=8, prebuf=3528, minreq=9168 maxrewind=0
D: [pulseaudio] memblockq.c: memblockq sanitized: maxlength=4194304, tlength=27520, base=8, prebuf=3528, minreq=9168 maxrewind=0
I: [pulseaudio] protocol-native.c: Final latency 104,00 ms = 26,03 ms + 2*25,99 ms + 26,00 ms
D: [alsa-sink-USB Audio] alsa-sink.c: Latency set to 26,00ms
D: [alsa-sink-USB Audio] alsa-sink.c: hwbuf_unused=348216
D: [alsa-sink-USB Audio] alsa-sink.c: setting avail_min=87848
D: [alsa-sink-USB Audio] alsa-sink.c: Requesting rewind due to latency change.
D: [alsa-sink-USB Audio] alsa-sink.c: Requested to rewind 352800 bytes.
D: [alsa-sink-USB Audio] alsa-sink.c: Limited to 351132 bytes.
D: [alsa-sink-USB Audio] alsa-sink.c: before: 87783
D: [alsa-sink-USB Audio] alsa-sink.c: after: 87783
D: [alsa-sink-USB Audio] alsa-sink.c: Rewound 351132 bytes.
D: [alsa-sink-USB Audio] sink.c: Processing rewind...
D: [alsa-sink-USB Audio] sink-input.c: Have to rewind 351132 bytes on render memblockq.
D: [alsa-sink-USB Audio] source.c: Processing rewind...
D: [pulseaudio] protocol-dbus.c: Interface org.PulseAudio.Core1.Stream added for object /org/pulseaudio/core1/playback_stream265
D: [alsa-sink-USB Audio] protocol-native.c: Requesting rewind due to end of underrun.
D: [alsa-sink-USB Audio] alsa-sink.c: Requested to rewind 352800 bytes.
D: [alsa-sink-USB Audio] alsa-sink.c: Limited to 4328 bytes.
D: [alsa-sink-USB Audio] alsa-sink.c: before: 1082
D: [alsa-sink-USB Audio] alsa-sink.c: after: 1082
D: [alsa-sink-USB Audio] alsa-sink.c: Rewound 4328 bytes.
D: [alsa-sink-USB Audio] sink.c: Processing rewind...
D: [alsa-sink-USB Audio] sink-input.c: Have to rewind 4328 bytes on render memblockq.
D: [alsa-sink-USB Audio] source.c: Processing rewind...
D: [alsa-sink-USB Audio] protocol-native.c: Implicit underrun of 'ALSA Playback'
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] alsa-sink.c: hwbuf_unused=0
D: [alsa-sink-USB Audio] alsa-sink.c: setting avail_min=87848
D: [alsa-sink-USB Audio] alsa-sink.c: Requested to rewind 352800 bytes.
D: [alsa-sink-USB Audio] alsa-sink.c: Limited to 2920 bytes.
D: [alsa-sink-USB Audio] alsa-sink.c: before: 730
D: [pulseaudio] module-suspend-on-idle.c: Sink alsa_output.usb-Logitech_Logitech_G930_Headset-00-Headset.iec958-stereo becomes idle, timeout in 5 seconds.
D: [alsa-sink-USB Audio] alsa-sink.c: after: 730
D: [alsa-sink-USB Audio] alsa-sink.c: Rewound 2920 bytes.
D: [alsa-sink-USB Audio] sink.c: Processing rewind...
D: [alsa-sink-USB Audio] source.c: Processing rewind...
D: [pulseaudio] module-suspend-on-idle.c: Sink alsa_output.usb-Logitech_Logitech_G930_Headset-00-Headset.iec958-stereo becomes idle, timeout in 5 seconds.
D: [pulseaudio] core.c: Hmm, no streams around, trying to vacuum.
D: [pulseaudio] protocol-dbus.c: Interface org.PulseAudio.Core1.Stream removed from object /org/pulseaudio/core1/playback_stream265
I: [pulseaudio] sink-input.c: Freeing input 265 "ALSA Playback"
I: [pulseaudio] module-stream-restore.c: Restoring device for stream sink-input-by-application-name:ALSA plug-in [FTL].
D: [pulseaudio] module-intended-roles.c: Not setting device for stream ALSA Playback, because already set.
I: [pulseaudio] sink-input.c: Trying to change sample rate
I: [pulseaudio] module-stream-restore.c: Restoring mute state for sink input sink-input-by-application-name:ALSA plug-in [FTL].
D: [pulseaudio] module-suspend-on-idle.c: Sink alsa_output.usb-Logitech_Logitech_G930_Headset-00-Headset.iec958-stereo becomes busy, resuming.
I: [pulseaudio] resampler.c: Forcing resampler 'copy', because of fixed, identical sample rates.
I: [pulseaudio] resampler.c: Using resampler 'copy'
I: [pulseaudio] resampler.c: Using s16le as working format.
D: [pulseaudio] resampler.c: Resampler:
D: [pulseaudio] resampler.c: rate 44100 -> 44100 (method copy),
D: [pulseaudio] resampler.c: format float32le -> s16le (intermediate s16le),
D: [pulseaudio] resampler.c: channels 2 -> 2 (resampling 2)
D: [pulseaudio] memblockq.c: memblockq requested: maxlength=33554432, tlength=0, base=4, prebuf=0, minreq=1 maxrewind=0
D: [pulseaudio] memblockq.c: memblockq sanitized: maxlength=33554432, tlength=33554432, base=4, prebuf=0, minreq=4 maxrewind=0
I: [pulseaudio] sink-input.c: Created input 266 "ALSA Playback" on alsa_output.usb-Logitech_Logitech_G930_Headset-00-Headset.iec958-stereo with sample spec float32le 2ch 44100Hz and channel map front-left,front-right
I: [pulseaudio] sink-input.c: media.name = "ALSA Playback"
I: [pulseaudio] sink-input.c: application.name = "ALSA plug-in [FTL]"
I: [pulseaudio] sink-input.c: native-protocol.peer = "UNIX socket client"
I: [pulseaudio] sink-input.c: native-protocol.version = "28"
I: [pulseaudio] sink-input.c: application.process.id = "1123"
I: [pulseaudio] sink-input.c: application.process.user = "fabian"
I: [pulseaudio] sink-input.c: application.process.host = "QUASAR"
I: [pulseaudio] sink-input.c: application.process.binary = "FTL"
I: [pulseaudio] sink-input.c: application.language = "C"
I: [pulseaudio] sink-input.c: window.x11.display = ":0"
I: [pulseaudio] sink-input.c: application.process.machine_id = "fd99aa52db0f4aa6b393c3b235eef24c"
I: [pulseaudio] sink-input.c: application.process.session_id = "1"
I: [pulseaudio] sink-input.c: module-stream-restore.id = "sink-input-by-application-name:ALSA plug-in [FTL]"
I: [pulseaudio] protocol-native.c: Requested tlength=40,00 ms, minreq=10,00 ms
D: [pulseaudio] protocol-native.c: Early requests mode enabled, configuring sink latency to minreq.
D: [pulseaudio] protocol-native.c: Requested latency=10,00 ms, Received latency=26,00 ms
D: [pulseaudio] memblockq.c: memblockq requested: maxlength=4194304, tlength=27520, base=8, prebuf=3528, minreq=9168 maxrewind=0
D: [pulseaudio] memblockq.c: memblockq sanitized: maxlength=4194304, tlength=27520, base=8, prebuf=3528, minreq=9168 maxrewind=0
I: [pulseaudio] protocol-native.c: Final latency 104,00 ms = 26,03 ms + 2*25,99 ms + 26,00 ms
D: [alsa-sink-USB Audio] alsa-sink.c: Latency set to 26,00ms
D: [alsa-sink-USB Audio] alsa-sink.c: hwbuf_unused=348216
D: [alsa-sink-USB Audio] alsa-sink.c: setting avail_min=87848
D: [alsa-sink-USB Audio] alsa-sink.c: Requesting rewind due to latency change.
D: [alsa-sink-USB Audio] alsa-sink.c: Requested to rewind 352800 bytes.
D: [alsa-sink-USB Audio] alsa-sink.c: Limited to 352544 bytes.
D: [alsa-sink-USB Audio] alsa-sink.c: before: 88136
D: [alsa-sink-USB Audio] alsa-sink.c: after: 87494
D: [alsa-sink-USB Audio] alsa-sink.c: Rewound 349976 bytes.
D: [alsa-sink-USB Audio] sink.c: Processing rewind...
D: [alsa-sink-USB Audio] sink-input.c: Have to rewind 349976 bytes on render memblockq.
D: [alsa-sink-USB Audio] source.c: Processing rewind...
D: [pulseaudio] protocol-dbus.c: Interface org.PulseAudio.Core1.Stream added for object /org/pulseaudio/core1/playback_stream266
D: [alsa-sink-USB Audio] protocol-native.c: Requesting rewind due to end of underrun.
D: [alsa-sink-USB Audio] alsa-sink.c: Requested to rewind 352800 bytes.
D: [alsa-sink-USB Audio] alsa-sink.c: Limited to 4328 bytes.
D: [alsa-sink-USB Audio] alsa-sink.c: before: 1082
D: [alsa-sink-USB Audio] alsa-sink.c: after: 1082
D: [alsa-sink-USB Audio] alsa-sink.c: Rewound 4328 bytes.
D: [alsa-sink-USB Audio] sink.c: Processing rewind...
D: [alsa-sink-USB Audio] sink-input.c: Have to rewind 4328 bytes on render memblockq.
D: [alsa-sink-USB Audio] source.c: Processing rewind...
D: [alsa-sink-USB Audio] protocol-native.c: Implicit underrun of 'ALSA Playback'
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] sink.c: Found underrun 2564 bytes ago (2020 bytes ahead in playback buffer)
D: [alsa-sink-USB Audio] alsa-sink.c: hwbuf_unused=0
D: [alsa-sink-USB Audio] alsa-sink.c: setting avail_min=87848
D: [alsa-sink-USB Audio] alsa-sink.c: Requested to rewind 352800 bytes.
D: [alsa-sink-USB Audio] alsa-sink.c: Limited to 4328 bytes.
D: [alsa-sink-USB Audio] alsa-sink.c: before: 1082
D: [alsa-sink-USB Audio] alsa-sink.c: after: 1082
D: [alsa-sink-USB Audio] alsa-sink.c: Rewound 4328 bytes.
D: [alsa-sink-USB Audio] sink.c: Processing rewind...
D: [alsa-sink-USB Audio] source.c: Processing rewind...
D: [pulseaudio] module-suspend-on-idle.c: Sink alsa_output.usb-Logitech_Logitech_G930_Headset-00-Headset.iec958-stereo becomes idle, timeout in 5 seconds.
D: [pulseaudio] module-suspend-on-idle.c: Sink alsa_output.usb-Logitech_Logitech_G930_Headset-00-Headset.iec958-stereo becomes idle, timeout in 5 seconds.
D: [pulseaudio] core.c: Hmm, no streams around, trying to vacuum.
Seems like it is a problem with alsa according to this
http://comments.gmane.org/gmane.comp.audio.pulseaudio.general/17484According to the last post it should be fixed, since I have the latest version installed though it may not be, but I think here is not the place to discuss this issue.
Thank you for you time and help though boa13