I think the problem is coming from underruns and then rewinds. Somehow i can see the audio coming with a latency of about 12 seconds .. and then PA crashed . I: [alsa-sink] alsa-sink.c: Starting playback. I: [alsa-sink] pcm_hw.c: SNDRV_PCM_IOCTL_START failed (-77) D: [pulseaudio] module-suspend-on-idle.c: Sink alsa_output.default becomes busy. I: [pulseaudio] resampler.c: Forcing resampler 'copy', because of fixed, identical sample rates. D: [pulseaudio] resampler.c: Channel matrix: D: [pulseaudio] resampler.c: I00 D: [pulseaudio] resampler.c: +------ D: [pulseaudio] resampler.c: O00 | 1.000 D: [pulseaudio] resampler.c: O01 | 1.000 I: [pulseaudio] remap.c: Using mono to stereo remapping I: [pulseaudio] resampler.c: Using resampler 'copy' I: [pulseaudio] resampler.c: Using s16le as working format. 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 0 "/usr/share/sounds/alsa/Front_Center.wav" on alsa_output.default with sample spec s16le 1ch 48000Hz and channel map mono I: [pulseaudio] sink-input.c: media.format = "WAV (Microsoft)" I: [pulseaudio] sink-input.c: application.name = "paplay" I: [pulseaudio] sink-input.c: media.name = "/usr/share/sounds/alsa/Front_Center.wav" I: [pulseaudio] sink-input.c: native-protocol.peer = "UNIX socket client" I: [pulseaudio] sink-input.c: native-protocol.version = "26" I: [pulseaudio] sink-input.c: application.process.id = "1649" I: [pulseaudio] sink-input.c: application.process.user = "root" I: [pulseaudio] sink-input.c: application.process.host = "10.195.245.138" I: [pulseaudio] sink-input.c: application.process.binary = "pacat" I: [pulseaudio] sink-input.c: application.language = "C" I: [pulseaudio] sink-input.c: application.process.machine_id = "10.195.245.138" I: [pulseaudio] sink-input.c: module-stream-restore.id = "sink-input-by-application-name:paplay" I: [pulseaudio] protocol-native.c: Requested tlength=2000.00 ms, minreq=20.00 ms D: [pulseaudio] protocol-native.c: Traditional mode enabled, modifying sink usec only for compat with minreq. D: [pulseaudio] protocol-native.c: Requested latency=1960.00 ms, Received latency=185.76 ms D: [pulseaudio] memblockq.c: memblockq requested: maxlength=4194304, tlength=192000, base=2, prebuf=190082, minreq=1920 maxrewind=0 D: [pulseaudio] memblockq.c: memblockq sanitized: maxlength=4194304, tlength=192000, base=2, prebuf=190082, minreq=1920 maxrewind=0 I: [pulseaudio] protocol-native.c: Final latency 2185.76 ms = 1960.00 ms + 2*20.00 ms + 185.76 ms D: [pulseaudio] core-subscribe.c: Dropped redundant event due to change event. D: [alsa-sink] protocol-native.c: Requesting rewind due to end of underrun. D: [alsa-sink] sink-input.c: Do not do any rewind requests, seems to cause loss of audio samples On Tue, Jun 4, 2013 at 8:01 PM, David Henningsson < david.henningsson at canonical.com> wrote: > On 06/05/2013 12:24 AM, D K wrote: > >> I am getting following error when i try to to paplay >> >> # paplay /usr/share/sounds/alsa/Front_**Center.wav >> Failed to drain stream: Timeout >> >> Here PA is connected to alsa-driver for playback of sound. >> I am not sure about the problem here any pointers would be helpful. >> >> thanks, >> KD >> >> The detailed log is below. >> >> I: [pulseaudio] protocol-native.c: Got crede[ 421.525807] audio ] >> 1154_dai_hw_params is completed. >> ntials: uid=0 gid=0 success=1 >> D: [pulseaudio] p[ 421.534996] audio ] 1154_pcm_hw_params is completed. >> rotocol-native.c: SHM possible: yes >> D: [pulseau[ 421.545005] audio ] 1154_pcm_prepare is >> completed(ch:2)(bs:16)(sr:**48000)(free:318644)(diff:**285876). >> dio] protocol-native.c: Negotiated SHM: yes >> I: [ 421.558994] audio ] 1154_pcm_prepare is >> completed(ch:2)(bs:16)(sr:**48000)(free:318644)(diff:**285876). >> [pulseaudio] sink-input.c: Trying to change sample rate >> I: [pulseaudio] alsa-sink.c: Updating rate for device d[ 421.578020] >> BUG: scheduling while atomic: alsa-sink/4669/0x00000003 >> [ 421.585948] Modules linked in: tntfs(PO) venc_hxenc(PO) vdec_vdu(PO) >> dc_gm(O) pvrsrvkm(O) kdrv_lg115x(O) logfunnel(O) hma(O) >> [ 421.597232] [<800197b8>] (unwind_backtrace+0x0/0xf8) from >> [<8043458c>] (__schedule+0x49c/0x4fc) >> [ 421.605933] [<8043458c>] (__schedule+0x49c/0x4fc) from [<80432d70>] >> (schedule_timeout+0x138/0x1c8) >> [ 421.614901] [<80432d70>] (schedule_timeout+0x138/0x1c8) from >> [<8002d5a8>] (msleep_interruptible+0x34/**0x44) >> [ 421.625106] [<8002d5a8>] (msleep_interruptible+0x34/**0x44) from >> [<7f050da8>] (1154_pcm_trigger+0x74/0xf4 [kdrv_lg115x]) >> [ 421.636319] [<7f050da8>] (1154_pcm_trigger+0x74/0xf4 [kdrv_lg115x]) >> from [<8035bee8>] (soc_pcm_trigger+0x64/0xa0) >> [ 421.646761] [<8035bee8>] (soc_pcm_trigger+0x64/0xa0) from >> [<803339f0>] (snd_pcm_do_start+0x2c/0x30) >> [ 421.655806] [<803339f0>] (snd_pcm_do_start+0x2c/0x30) from >> [<80333698>] (snd_pcm_action_single+0x38/**0x78) >> [ 421.665372] [<80333698>] (snd_pcm_action_single+0x38/**0x78) from >> [<80338bb0>] (snd_pcm_lib_write1+0x2c8/**0x314) >> [ 421.675284] [<80338bb0>] (snd_pcm_lib_write1+0x2c8/**0x314) from >> [<80338ca4>] (snd_pcm_lib_write+0x50/0x5c) >> [ 421.684849] [<80338ca4>] (snd_pcm_lib_write+0x50/0x5c) from >> [<80335630>] (snd_pcm_playback_ioctl1+**0x1a0/0x3e0) >> [ 421.694853] [<80335630>] (snd_pcm_playback_ioctl1+**0x1a0/0x3e0) from >> [<800bc9d0>] (vfs_ioctl+0x30/0x70) >> [ 421.704157] [<800bc9d0>] (vfs_ioctl+0x30/0x70) from [<800bcb70>] >> (do_vfs_ioctl+0x68/0x524) >> [ 421.712418] [<800bcb70>] (do_vfs_ioctl+0x68/0x524) from [<800bd064>] >> (sys_ioctl+0x38/0x5c) >> [ 421.720688] [<800bd064>] (sys_ioctl+0x38/0x5c) from [<800135c0>] >> (ret_fast_syscall+0x0/0x30) >> > > Whenever you get backtraces from the kernel like the lines above (starting > with "BUG: scheduling while atomic") show you, you are looking at a kernel > bug. You seem to be using some ASoC driver, so that's where I would look > first. > > Aplay and PulseAudio are sometimes using the driver in slightly different > ways, so even if aplay works that is not a guarantee that the fault is in > PulseAudio. > > > > > efault, new rate is 48000 >> I: [p[ 421.730381] audio ] 1154_pcm_trigger is completed(cmd:1). >> ulseaudio] sink.c: Changed sampl[ 421.737677] audio ] 1154_dai_trigger >> is completed. >> ing rate successfully >> I: [pulseaudio] sink-input.c: Rate changed to 48000 Hz >> D: [pulseaudio] sink.c: Suspend cause of sink alsa_output.default is >> 0x0000, resuming >> I: [alsa-sink] alsa-sink.c: Trying resume... >> D: [alsa-sink] alsa-util.c: Maximum hw buffer size is 170 ms >> D: [alsa-sink] alsa-util.c: Set buffer size first (to 8192 samples), >> period size second (to 1024 samples). >> D: [alsa-sink] alsa-sink.c: hwbuf_unused=0 >> D: [alsa-sink] alsa-sink.c: setting avail_min=1 >> I: [alsa-sink] alsa-sink.c: Resumed successfully... >> D: [pulseaudio] module-suspend-on-idle.c: Sink alsa_output.default >> becomes idle, timeout in 5 seconds. >> I: [alsa-sink] alsa-sink.c: Starting playback. >> I: [alsa-sink] pcm_hw.c: SNDRV_PCM_IOCTL_START failed (-77) >> > > It is also a bit weird that this error does not seem to propagate up and > cause follow-up errors, but that's likely not the root cause here. > > D: [pulseaudio] module-suspend-on-idle.c: Sink alsa_output.default >> becomes busy. >> I: [pulseaudio] resampler.c: Forcing resampler 'copy', because of fixed, >> identical sample rates. >> D: [pulseaudio] resampler.c: Channel matrix: >> D: [pulseaudio] resampler.c: I00 >> D: [pulseaudio] resampler.c: +------ >> D: [pulseaudio] resampler.c: O00 | 1.000 >> D: [pulseaudio] resampler.c: O01 | 1.000 >> I: [pulseaudio] remap.c: Using mono to stereo remapping >> I: [pulseaudio] resampler.c: Using resampler 'copy' >> I: [pulseaudio] resampler.c: Using s16le as working format. >> 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 0 >> "/usr/share/sounds/alsa/Front_**Center.wav" on alsa_output.default with >> sample spec s16le 1ch 48000Hz and channel map mono >> I: [pulseaudio] sink-input.c: media.format = "WAV (Microsoft)" >> I: [pulseaudio] sink-input.c: application.name <http://application.name> >> = "paplay" >> I: [pulseaudio] sink-input.c: media.name <http://media.name> = >> >> "/usr/share/sounds/alsa/Front_**Center.wav" >> I: [pulseaudio] sink-input.c: native-protocol.peer = "UNIX socket >> client" >> I: [pulseaudio] sink-input.c: native-protocol.version = "26" >> I: [pulseaudio] sink-input.c: application.process.id >> <http://application.process.id**> = "4735" >> >> I: [pulseaudio] sink-input.c: application.process.user = "root" >> I: [pulseaudio] sink-input.c: application.process.host = >> "10.195.245.138" >> I: [pulseaudio] sink-input.c: application.process.binary = "pacat" >> I: [pulseaudio] sink-input.c: application.language = "C" >> I: [pulseaudio] sink-input.c: application.process.machine_id = >> "10.195.245.138" >> I: [pulseaudio] sink-input.c: module-stream-restore.id >> <http://module-stream-restore.**id <http://module-stream-restore.id>> = >> "sink-input-by-application-**name:paplay" >> >> I: [pulseaudio] protocol-native.c: Requested tlength=2000.00 ms, >> minreq=20.00 ms >> D: [pulseaudio] protocol-native.c: Traditional mode enabled, modifying >> sink usec only for compat with minreq. >> D: [pulseaudio] protocol-native.c: Requested latency=1960.00 ms, >> Received latency=185.76 ms >> D: [pulseaudio] memblockq.c: memblockq requested: maxlength=4194304, >> tlength=192000, base=2, prebuf=190082, minreq=1920 maxrewind=0 >> D: [pulseaudio] memblockq.c: memblockq sanitized: maxlength=4194304, >> tlength=192000, base=2, prebuf=190082, minreq=1920 maxrewind=0 >> I: [pulseaudio] protocol-native.c: Final latency 2185.76 ms = 1960.00 ms >> + 2*20.00 ms + 185.76 ms >> D: [pulseaudio] core-subscribe.c: Dropped redundant event due to change >> event. >> D: [alsa-sink] protocol-native.c: Requesting rewind due to end of >> underrun. >> D: [alsa-sink] sink-input.c: Do not do any rewind requests, seems to >> cause loss of audio samples >> D: [alsa-sink] alsa-sink.c: Requested to rewind 32768 bytes. >> D: [alsa-sink] alsa-sink.c: Limited to 30976 bytes. >> D: [alsa-sink] alsa-sink.c: before: 7744 >> D: [alsa-sink] alsa-sink.c: after: 7744 >> D: [alsa-sink] alsa-sink.c: Rewound 30976 bytes. >> D: [alsa-sink] sink.c: Processing rewind... >> D: [alsa-sink] source.c: Processing rewind... >> D: [pulseaudio] module-suspend-on-idle.c: Sink alsa_output.default >> becomes idle, timeout in 5 seconds. >> D: [pulseaudio] module-suspend-on-idle.c: Sink alsa_output.default >> becomes idle, timeout in 5 seconds. >> D: [pulseaudio] core.c: Hmm, no streams around, trying to vacuum. >> I: [pulseaudio] sink-input.c: Freeing input 0 >> "/usr/share/sounds/alsa/Front_**Center.wav" >> I: [pulseaudio] client.c: Freed 0 "paplay" >> I: [pulseaudio] protocol-native.c: Connection died. >> >> >> >> ______________________________**_________________ >> pulseaudio-discuss mailing list >> pulseaudio-discuss at lists.**freedesktop.org<pulseaudio-discuss at lists.freedesktop.org> >> http://lists.freedesktop.org/**mailman/listinfo/pulseaudio-**discuss<http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss> >> >> > > > -- > David Henningsson, Canonical Ltd. > https://launchpad.net/~diwic > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20130606/a28d441c/attachment.html>
